This document discusses efforts to mimic the mechanosensing abilities of crickets using microelectromechanical systems (MEMS). It begins by outlining the motivations for biomimetic sensory research and describes the flow-sensitive hairs that cover crickets' cerci. The document then provides an overview of MEMS fabrication techniques and limitations compared to biological systems. Models are presented predicting the mechanical response, sensitivity, and figures of merit of artificial hair sensors based on properties of cricket hairs. Finally, the fabrication and characterization of MEMS-based artificial hair sensors using materials like SU-8 is described. The overall goal is to determine if biomimetic hair sensors are a dream or reality.
The document summarizes a study on determining the transversely isotropic elastic properties of pristine and vacancy defected boron nitride nanotubes (BNNTs) using molecular dynamics simulations. The study found that the existence of vacancy defects in BNNTs reduces their mechanical properties and strength. A vacancy concentration of 2% was found to profoundly affect all the elastic moduli of BNNTs. The work demonstrated that vacancy defects can play an important role in engineering the properties of BNNT nanocomposites for various applications.
Impact of detector thickness on imaging characteristics of the Siemens Biogra...Anax Fotopoulos
This document summarizes a Monte Carlo study using GATE simulation of a Siemens Biograph DUO PET/CT scanner. It investigates the impact of detector thickness on imaging characteristics by simulating the scanner with LSO detectors of 2cm and 3cm thickness. The results show that increasing thickness from 2cm to 3cm improves detection efficiency, resulting in a sharper energy peak at 511 keV, higher counts, and better energy resolution and signal-to-noise ratio. However, thicker detectors may also delay signal processing and increase device cost and complexity.
3D isocenters quality assurance in radiation treatment room using a motion c...WonjoongCheon
The document describes a new automatic 3D isocenter quality assurance system for proton therapy machines using a motion capture camera system and Eagle phantom. The Eagle phantom allows independent determination of the mechanical, radiation, and imaging isocenters in the treatment room coordinate system. Comparisons to commercial products showed similar accuracy, with differences of 0.316 mm and 0.368 mm. The advantage is this new system can perform quality assurance of multiple isocenters using a single phantom.
Liver segmentation using U-net: Practical issues @ SNU-TFWonjoongCheon
1) The document discusses practical issues in liver segmentation using a U-net architecture.
2) It describes the dataset used, preprocessing steps including standardization and resizing, and details of the in-house U-net model including convolution blocks, activation functions, loss functions, and hyperparameters.
3) Results are presented showing good and bad segmentation outcomes under different conditions and discussing prediction errors in imbalanced data.
The document describes the development of a time-resolved mirrorless scintillation dosimetry system for accurate radiation measurement. Key features include:
1. It is significantly more compact and lighter than conventional scintillation detectors, weighing only 10% as much, by removing the mirror and using a GoPro camera.
2. It can analyze the two-dimensional dose distribution for each segment and beam over time, making it time-resolved.
3. Initial results found it has good linearity and repeatability compared to film dosimeters, and can accurately measure beam profiles, depth doses, and verify complex IMRT plans.
1. The study proposes a deep learning approach for automatically contouring organs at risk (OARs) on reduced field CT (RF-CT) images taken during radiation therapy based on an initial simulation CT and contours.
2. The approach was tested on lung, prostate, and brain cases and achieved average Dice coefficients of 0.944, 0.949 and 0.960 respectively when compared to expert contours on the RF-CTs.
3. The method shows potential as part of an online adaptive radiation therapy (ART) workflow by automating re-contouring and reducing planning time from hours to minutes.
Automatic identification of animal using visual and motion saliencyeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
The document summarizes a study on determining the transversely isotropic elastic properties of pristine and vacancy defected boron nitride nanotubes (BNNTs) using molecular dynamics simulations. The study found that the existence of vacancy defects in BNNTs reduces their mechanical properties and strength. A vacancy concentration of 2% was found to profoundly affect all the elastic moduli of BNNTs. The work demonstrated that vacancy defects can play an important role in engineering the properties of BNNT nanocomposites for various applications.
Impact of detector thickness on imaging characteristics of the Siemens Biogra...Anax Fotopoulos
This document summarizes a Monte Carlo study using GATE simulation of a Siemens Biograph DUO PET/CT scanner. It investigates the impact of detector thickness on imaging characteristics by simulating the scanner with LSO detectors of 2cm and 3cm thickness. The results show that increasing thickness from 2cm to 3cm improves detection efficiency, resulting in a sharper energy peak at 511 keV, higher counts, and better energy resolution and signal-to-noise ratio. However, thicker detectors may also delay signal processing and increase device cost and complexity.
3D isocenters quality assurance in radiation treatment room using a motion c...WonjoongCheon
The document describes a new automatic 3D isocenter quality assurance system for proton therapy machines using a motion capture camera system and Eagle phantom. The Eagle phantom allows independent determination of the mechanical, radiation, and imaging isocenters in the treatment room coordinate system. Comparisons to commercial products showed similar accuracy, with differences of 0.316 mm and 0.368 mm. The advantage is this new system can perform quality assurance of multiple isocenters using a single phantom.
Liver segmentation using U-net: Practical issues @ SNU-TFWonjoongCheon
1) The document discusses practical issues in liver segmentation using a U-net architecture.
2) It describes the dataset used, preprocessing steps including standardization and resizing, and details of the in-house U-net model including convolution blocks, activation functions, loss functions, and hyperparameters.
3) Results are presented showing good and bad segmentation outcomes under different conditions and discussing prediction errors in imbalanced data.
The document describes the development of a time-resolved mirrorless scintillation dosimetry system for accurate radiation measurement. Key features include:
1. It is significantly more compact and lighter than conventional scintillation detectors, weighing only 10% as much, by removing the mirror and using a GoPro camera.
2. It can analyze the two-dimensional dose distribution for each segment and beam over time, making it time-resolved.
3. Initial results found it has good linearity and repeatability compared to film dosimeters, and can accurately measure beam profiles, depth doses, and verify complex IMRT plans.
1. The study proposes a deep learning approach for automatically contouring organs at risk (OARs) on reduced field CT (RF-CT) images taken during radiation therapy based on an initial simulation CT and contours.
2. The approach was tested on lung, prostate, and brain cases and achieved average Dice coefficients of 0.944, 0.949 and 0.960 respectively when compared to expert contours on the RF-CTs.
3. The method shows potential as part of an online adaptive radiation therapy (ART) workflow by automating re-contouring and reducing planning time from hours to minutes.
Automatic identification of animal using visual and motion saliencyeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Large scale catastrophic shifts have been documented for ecosystems, climate systems, oceanic circulation patterns and socio-economic systems. Such shifts may be related to loss of resilience, in the sense that the basin of attraction of the present state of a system is shrinking and the probability that a small disturbance can tip the system into the basin of attraction of a contrasting state increases. Recent theoretical findings suggest that the shrinking of the basin of attraction has fundamental effects on the dynamical behavior of the system. Such effects appear to change with a consistent way as the system approaches the point where the catastrophic transition takes place. Apparently, being able to decipher these effects into measurable quantities of some sort of leading indicators can enhance our ability to assess the risk of upcoming catastrophic shifts, or to manage systems for enhanced resilience to such transitions.
Over the last decades, an interdisciplinary community of scientists, especially physicists, has carried out both empirical and theoretical investigations aimed at understanding economic and financial systems within the framework of complex systems. This approach, which defines the so-called field of Econophysics, differs from the one traditionally adopted in mainstream economics in various respects. First of all, emphasis is put on induction from empirical evidence to theoretical models, rather than deduction from strict and often ureasonable mathematical assumptions about the expected behaviour of individuals. Second, the preferred objects of analysis are large socio-economic systems with many uderlying units, which often interact with each other forming intricate networks with a complex topology. In this talk, I will briefly introduce various examples of complex networks encountered in Econophysics, and then focus in particular on the World Trade Web formed by the import-export relationships among all world countries. I will conclude with a discussion of the implications that recent results about the properties of the World Trade Web have for international macroeconomics
The document outlines a plan to send the first crew of 4 humans to Mars in 2023, with subsequent crews of 4 every two years to establish a permanent human settlement on Mars. It discusses the technical feasibility and costs, presenting a business case involving global audiences and reality TV. The status notes a sound technical plan is in place, with letters of interest from suppliers and a confirmed business case. Current actions involve presenting the plan, finding sponsors, and selecting astronauts, with the next steps being funding for design studies.
This document discusses various types of mechanical sensors and their applications. It describes sensors that measure mechanical phenomena like pressure, force, torque, inertia, and flow. Pressure sensors are used in applications like manometers, barometers, microphones, and automotive parts. Force and torque sensors can be used in control systems, testing equipment, and for measuring power transmission. Inertial sensors like accelerometers have applications in industry, military, vibration monitoring, and safety systems. Flow sensors measure flow rates using principles of heat transfer and are used in microsensors and velocimetry applications. The document provides details on common sensing techniques like piezoresistivity, piezoelectricity, capacitive, inductive and resonant techniques.
Microelectromechanical Systems (MEMS) are miniature devices comprising of integrated mechanical (levers, springs, deformable membranes, vibrating structures, etc.) and electrical (resistors, capacitors, inductors, etc.) components designed to work in concert to sense and report on the physical properties of their immediate or local environment, or, when signaled to do so, to perform some kind of controlled physical interaction or actuation with their immediate or local environment
To deal with various technologies which provide smart sensing in healthcare and compare them for their energy usage and battery life and discuss the format of communication to the database of these devices. To put forward devices which use smart sensors in advanced medical check-ups. To discuss the prospects of upcoming technology called Smart Dust in e-health and its advantages and effects for better deployment of trustworthy services in healthcare keeping in mind all the capabilities of the Smart Sensor.
Progress of Integration in MEMS and New Industry CreationSLINTEC
This document provides an overview of progress in microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) technology and applications. It discusses the growth of the MEMS/NEMS market, successful commercial applications in automobiles and IT, and research at Ritsumeikan University on developing new MEMS/NEMS devices for applications in areas like robotics, medical diagnostics, communication technology, and more sustainable "green MEMS" using biodegradable polymers.
The document discusses micro and nano technology measurement and characterization services provided by the Centre for Measurement of Micro and Nano Technologies (CEMMNT). CEMMNT offers over 100 measurement techniques through five partner organizations to analyze micro and nano scale features. Their services help UK industries design and develop smaller, cheaper products across sectors like electronics, medical devices, and consumer goods.
This document discusses using bionics and bioelectronics to harvest energy from the human body. It describes two methods: piezoelectricity, which uses piezoelectric materials to convert mechanical energy from body movements into electrical energy; and triboelectricity, which uses the transfer of charges between two materials in contact to generate electricity from motions like walking. The document outlines these approaches and discusses scaling them up to harvest more energy, transferring the energy wirelessly, improving efficiency, and designing supporting circuits. The overall goal is to power prosthetics and other devices using energy from human movement and interactions.
Performance analysis of a rectangular microstrip patch antenna on different d...Alexander Decker
The document summarizes an experiment on the effect of length and position of a magnetostrictive amorphous wire on its performance in motor speed sensing. The experiment found that (1) there is a critical wire length of approximately 7 cm for optimal performance based on the Large Barkhausen Jump phenomenon, (2) the optimal horizontal position from the rotor is 7 cm, and (3) the wire must be centered both vertically and sideways relative to the rotor within 3 cm for a strong signal.
Ulas Ayaz has designed several optical sensors using microspheres as the sensing element. His shear stress sensor was the first to directly measure wall shear stress of reattaching flows. It has a flexible design that allows adjustment of resolution and bandwidth by changing the sphere material and size. Testing showed it performed well in measuring both steady and unsteady flows. Ayaz also developed a seismometer that directly measures acceleration up to 1 micro-g with high sensitivity and bandwidth up to 20 Hz using whispering gallery mode optics. Further, he designed miniature pressure, electric field, and prosthetic sensors using similar microsphere techniques.
IRJET - Wireless Controlled Rough Terrain Vehicle to Detect Alive Human in Ea...IRJET Journal
This document describes a wireless controlled rough terrain vehicle designed to detect alive humans in earthquake areas using a rocker bogie suspension system. The proposed system uses a PIR sensor to detect the presence of living humans and a low-cost camera to obtain video of the scene. Additional sensors include a temperature sensor and gas detector to analyze the surrounding environment. The rocker-bogie suspension allows the vehicle to traverse irregular surfaces. The robot is controlled remotely by a user via smartphone. When a human is detected, the controller stops the robot and sends an alert to the user. The system aims to safely and efficiently conduct search and rescue operations after disasters.
This document discusses reactive algorithms for multi-robot systems. Reactive algorithms directly couple perception to action using simple hardware. Examples of reactive algorithms discussed include Braitenberg vehicles and Brooks' subsumption architecture. Collaboration in reactive swarms can occur implicitly through environmental templates, where robots' probabilities of certain behaviors are functions of local environmental conditions, or explicitly through local communication between robots. Examples demonstrated include randomized coverage of turbine blades, stick pulling between two robots, and collective aggregation of objects.
ANALYSIS OF RING JET LASER GYRO RESONANT DITHERING MECHANISM P singh
This paper presents the design, manufacture, testing and improvement of newly developed piezoelectric torsion actuator which generates angular displacement using piezo ceramics and torsion bar. The proposed piezoelectric torsion actuator generates angular displacement during dithering, directly invoking the shear mode of the piezoelectric material and hence no complicated additional mechanism is needed. The piezo plates are formed from a rectangular PZT material duly poled along the axial direction. The dither mechanism is divided into four segments that are arranged in circular configuration. Each of the segments off our piezoplates is bonded in opposite poling directions with soldering adhesive. The key to design of such an actuator is to match the torsion resonant frequency of the actuator with the excitation frequency. FEA for the Torsion bar is carried out to find the different resonant mode sand mode shapes. Also, a set of torsion bars and resonator are analyzed to evaluate the maximum angular displacement and stresses on torsion bars. An experimental investigation in terms of electrical impedance and angular displacement measurement was conducted to verify the mode analysis. Based on the FEA analysis, a new material for the torsion actuator was selected having high Curie temperature and stable relative dielectric constant so that it has higher tentivity even after bonding the piezo plates on torsion bars and also wire soldering process. The design analysis was verified with the experimental results for incorporation of the selected mechanism for the production of dither in the system.
This document describes the design of a color tracking robot project. It uses a webcam and image processing software to detect a target color on a human. An ultrasonic sensor helps avoid obstacles. A microcontroller controls DC motors and receives input from sensors. The robot can follow and carry loads for a soldier to lighten their burden. Future extensions could improve identification through face or body recognition and use IR cameras for better accuracy. The goal is a low-cost robot for applications like military transport or assistance for the elderly.
IRJET- Analysis of Cantilever Beam with PZT Patchs in AbaqusIRJET Journal
This document analyzes the use of PZT patches to detect cracks in a cantilever beam using Abaqus software. A 4m long cantilever beam with a 0.35m square cross-section made of M20 grade concrete was modeled with PZT patches of size 10x10x0.3mm. The analysis found that placing PZT patches near the fixed end of the beam produced wave forms from the electrical potential that best identified damage locations when a load was applied to the free end. The results concluded that PZT patch placement depends on beam length and load location, and a location near the fixed support is optimal for crack detection in cantilever beams.
This document discusses the 3D modeling of the knee joint using CT/MRI scan data and MIMICS software for the purpose of designing a custom knee implant. Key steps included segmenting the distal femur and proximal tibia from images, creating a 3D surface model, and designing a knee implant using reverse engineering that precisely matches the patient's bone geometry. The custom implant was found to mimic the natural curvature of the knee joint better than standard implants, allowing for more natural motion. Accuracy was improved over previous CAD models by using medical images and accounting for variability in bone density across different regions.
CBCT imaging allows dentists to visualize anatomy in 3 dimensions. It has many applications including implant planning, assessing impacted teeth, orthodontic evaluation, and examining maxillofacial trauma and lesions. CBCT provides important information such as bone quantity and quality, location of vital structures, and relationship of pathologies to surrounding tissues. It also allows for accurate pre-surgical planning through tools like radiographic tracing and implant simulation. CBCT has advantages over medical CT such as smaller size, lower radiation dose, and software tailored for dentistry.
Three-dimensional imaging techniques: A literature review By; Orhan Hakki Ka...Dr. Yahya Alogaibi
This literature review discusses various 3D imaging techniques used in dentistry and orthodontics. It begins by providing background on the development of 3D imaging since the discovery of X-rays. It then discusses disadvantages of traditional 2D cephalometry. The bulk of the review covers different 3D imaging modalities including CT, CBCT, MCT, 3D laser scanning, and their uses and advantages/disadvantages in orthodontics. Key applications discussed are impacted teeth detection, airway analysis, TMJ evaluation, and cleft lip/palate treatment planning.
The document discusses the history and development of VLSI (Very Large Scale Integration) technology and Moore's Law over time. It describes how transistors have gotten smaller through scaling, allowing more to fit on chips. This doubling of transistors every couple years is known as Moore's Law. 3D VLSI is presented as a potential solution to continue following Moore's Law by building chips in three dimensions rather than just two. Key challenges of 3D integration are also outlined.
Large scale catastrophic shifts have been documented for ecosystems, climate systems, oceanic circulation patterns and socio-economic systems. Such shifts may be related to loss of resilience, in the sense that the basin of attraction of the present state of a system is shrinking and the probability that a small disturbance can tip the system into the basin of attraction of a contrasting state increases. Recent theoretical findings suggest that the shrinking of the basin of attraction has fundamental effects on the dynamical behavior of the system. Such effects appear to change with a consistent way as the system approaches the point where the catastrophic transition takes place. Apparently, being able to decipher these effects into measurable quantities of some sort of leading indicators can enhance our ability to assess the risk of upcoming catastrophic shifts, or to manage systems for enhanced resilience to such transitions.
Over the last decades, an interdisciplinary community of scientists, especially physicists, has carried out both empirical and theoretical investigations aimed at understanding economic and financial systems within the framework of complex systems. This approach, which defines the so-called field of Econophysics, differs from the one traditionally adopted in mainstream economics in various respects. First of all, emphasis is put on induction from empirical evidence to theoretical models, rather than deduction from strict and often ureasonable mathematical assumptions about the expected behaviour of individuals. Second, the preferred objects of analysis are large socio-economic systems with many uderlying units, which often interact with each other forming intricate networks with a complex topology. In this talk, I will briefly introduce various examples of complex networks encountered in Econophysics, and then focus in particular on the World Trade Web formed by the import-export relationships among all world countries. I will conclude with a discussion of the implications that recent results about the properties of the World Trade Web have for international macroeconomics
The document outlines a plan to send the first crew of 4 humans to Mars in 2023, with subsequent crews of 4 every two years to establish a permanent human settlement on Mars. It discusses the technical feasibility and costs, presenting a business case involving global audiences and reality TV. The status notes a sound technical plan is in place, with letters of interest from suppliers and a confirmed business case. Current actions involve presenting the plan, finding sponsors, and selecting astronauts, with the next steps being funding for design studies.
This document discusses various types of mechanical sensors and their applications. It describes sensors that measure mechanical phenomena like pressure, force, torque, inertia, and flow. Pressure sensors are used in applications like manometers, barometers, microphones, and automotive parts. Force and torque sensors can be used in control systems, testing equipment, and for measuring power transmission. Inertial sensors like accelerometers have applications in industry, military, vibration monitoring, and safety systems. Flow sensors measure flow rates using principles of heat transfer and are used in microsensors and velocimetry applications. The document provides details on common sensing techniques like piezoresistivity, piezoelectricity, capacitive, inductive and resonant techniques.
Microelectromechanical Systems (MEMS) are miniature devices comprising of integrated mechanical (levers, springs, deformable membranes, vibrating structures, etc.) and electrical (resistors, capacitors, inductors, etc.) components designed to work in concert to sense and report on the physical properties of their immediate or local environment, or, when signaled to do so, to perform some kind of controlled physical interaction or actuation with their immediate or local environment
To deal with various technologies which provide smart sensing in healthcare and compare them for their energy usage and battery life and discuss the format of communication to the database of these devices. To put forward devices which use smart sensors in advanced medical check-ups. To discuss the prospects of upcoming technology called Smart Dust in e-health and its advantages and effects for better deployment of trustworthy services in healthcare keeping in mind all the capabilities of the Smart Sensor.
Progress of Integration in MEMS and New Industry CreationSLINTEC
This document provides an overview of progress in microelectromechanical systems (MEMS) and nanoelectromechanical systems (NEMS) technology and applications. It discusses the growth of the MEMS/NEMS market, successful commercial applications in automobiles and IT, and research at Ritsumeikan University on developing new MEMS/NEMS devices for applications in areas like robotics, medical diagnostics, communication technology, and more sustainable "green MEMS" using biodegradable polymers.
The document discusses micro and nano technology measurement and characterization services provided by the Centre for Measurement of Micro and Nano Technologies (CEMMNT). CEMMNT offers over 100 measurement techniques through five partner organizations to analyze micro and nano scale features. Their services help UK industries design and develop smaller, cheaper products across sectors like electronics, medical devices, and consumer goods.
This document discusses using bionics and bioelectronics to harvest energy from the human body. It describes two methods: piezoelectricity, which uses piezoelectric materials to convert mechanical energy from body movements into electrical energy; and triboelectricity, which uses the transfer of charges between two materials in contact to generate electricity from motions like walking. The document outlines these approaches and discusses scaling them up to harvest more energy, transferring the energy wirelessly, improving efficiency, and designing supporting circuits. The overall goal is to power prosthetics and other devices using energy from human movement and interactions.
Performance analysis of a rectangular microstrip patch antenna on different d...Alexander Decker
The document summarizes an experiment on the effect of length and position of a magnetostrictive amorphous wire on its performance in motor speed sensing. The experiment found that (1) there is a critical wire length of approximately 7 cm for optimal performance based on the Large Barkhausen Jump phenomenon, (2) the optimal horizontal position from the rotor is 7 cm, and (3) the wire must be centered both vertically and sideways relative to the rotor within 3 cm for a strong signal.
Ulas Ayaz has designed several optical sensors using microspheres as the sensing element. His shear stress sensor was the first to directly measure wall shear stress of reattaching flows. It has a flexible design that allows adjustment of resolution and bandwidth by changing the sphere material and size. Testing showed it performed well in measuring both steady and unsteady flows. Ayaz also developed a seismometer that directly measures acceleration up to 1 micro-g with high sensitivity and bandwidth up to 20 Hz using whispering gallery mode optics. Further, he designed miniature pressure, electric field, and prosthetic sensors using similar microsphere techniques.
IRJET - Wireless Controlled Rough Terrain Vehicle to Detect Alive Human in Ea...IRJET Journal
This document describes a wireless controlled rough terrain vehicle designed to detect alive humans in earthquake areas using a rocker bogie suspension system. The proposed system uses a PIR sensor to detect the presence of living humans and a low-cost camera to obtain video of the scene. Additional sensors include a temperature sensor and gas detector to analyze the surrounding environment. The rocker-bogie suspension allows the vehicle to traverse irregular surfaces. The robot is controlled remotely by a user via smartphone. When a human is detected, the controller stops the robot and sends an alert to the user. The system aims to safely and efficiently conduct search and rescue operations after disasters.
This document discusses reactive algorithms for multi-robot systems. Reactive algorithms directly couple perception to action using simple hardware. Examples of reactive algorithms discussed include Braitenberg vehicles and Brooks' subsumption architecture. Collaboration in reactive swarms can occur implicitly through environmental templates, where robots' probabilities of certain behaviors are functions of local environmental conditions, or explicitly through local communication between robots. Examples demonstrated include randomized coverage of turbine blades, stick pulling between two robots, and collective aggregation of objects.
ANALYSIS OF RING JET LASER GYRO RESONANT DITHERING MECHANISM P singh
This paper presents the design, manufacture, testing and improvement of newly developed piezoelectric torsion actuator which generates angular displacement using piezo ceramics and torsion bar. The proposed piezoelectric torsion actuator generates angular displacement during dithering, directly invoking the shear mode of the piezoelectric material and hence no complicated additional mechanism is needed. The piezo plates are formed from a rectangular PZT material duly poled along the axial direction. The dither mechanism is divided into four segments that are arranged in circular configuration. Each of the segments off our piezoplates is bonded in opposite poling directions with soldering adhesive. The key to design of such an actuator is to match the torsion resonant frequency of the actuator with the excitation frequency. FEA for the Torsion bar is carried out to find the different resonant mode sand mode shapes. Also, a set of torsion bars and resonator are analyzed to evaluate the maximum angular displacement and stresses on torsion bars. An experimental investigation in terms of electrical impedance and angular displacement measurement was conducted to verify the mode analysis. Based on the FEA analysis, a new material for the torsion actuator was selected having high Curie temperature and stable relative dielectric constant so that it has higher tentivity even after bonding the piezo plates on torsion bars and also wire soldering process. The design analysis was verified with the experimental results for incorporation of the selected mechanism for the production of dither in the system.
This document describes the design of a color tracking robot project. It uses a webcam and image processing software to detect a target color on a human. An ultrasonic sensor helps avoid obstacles. A microcontroller controls DC motors and receives input from sensors. The robot can follow and carry loads for a soldier to lighten their burden. Future extensions could improve identification through face or body recognition and use IR cameras for better accuracy. The goal is a low-cost robot for applications like military transport or assistance for the elderly.
IRJET- Analysis of Cantilever Beam with PZT Patchs in AbaqusIRJET Journal
This document analyzes the use of PZT patches to detect cracks in a cantilever beam using Abaqus software. A 4m long cantilever beam with a 0.35m square cross-section made of M20 grade concrete was modeled with PZT patches of size 10x10x0.3mm. The analysis found that placing PZT patches near the fixed end of the beam produced wave forms from the electrical potential that best identified damage locations when a load was applied to the free end. The results concluded that PZT patch placement depends on beam length and load location, and a location near the fixed support is optimal for crack detection in cantilever beams.
This document discusses the 3D modeling of the knee joint using CT/MRI scan data and MIMICS software for the purpose of designing a custom knee implant. Key steps included segmenting the distal femur and proximal tibia from images, creating a 3D surface model, and designing a knee implant using reverse engineering that precisely matches the patient's bone geometry. The custom implant was found to mimic the natural curvature of the knee joint better than standard implants, allowing for more natural motion. Accuracy was improved over previous CAD models by using medical images and accounting for variability in bone density across different regions.
CBCT imaging allows dentists to visualize anatomy in 3 dimensions. It has many applications including implant planning, assessing impacted teeth, orthodontic evaluation, and examining maxillofacial trauma and lesions. CBCT provides important information such as bone quantity and quality, location of vital structures, and relationship of pathologies to surrounding tissues. It also allows for accurate pre-surgical planning through tools like radiographic tracing and implant simulation. CBCT has advantages over medical CT such as smaller size, lower radiation dose, and software tailored for dentistry.
Three-dimensional imaging techniques: A literature review By; Orhan Hakki Ka...Dr. Yahya Alogaibi
This literature review discusses various 3D imaging techniques used in dentistry and orthodontics. It begins by providing background on the development of 3D imaging since the discovery of X-rays. It then discusses disadvantages of traditional 2D cephalometry. The bulk of the review covers different 3D imaging modalities including CT, CBCT, MCT, 3D laser scanning, and their uses and advantages/disadvantages in orthodontics. Key applications discussed are impacted teeth detection, airway analysis, TMJ evaluation, and cleft lip/palate treatment planning.
The document discusses the history and development of VLSI (Very Large Scale Integration) technology and Moore's Law over time. It describes how transistors have gotten smaller through scaling, allowing more to fit on chips. This doubling of transistors every couple years is known as Moore's Law. 3D VLSI is presented as a potential solution to continue following Moore's Law by building chips in three dimensions rather than just two. Key challenges of 3D integration are also outlined.
The document discusses using a ytterbium-doped fiber laser for automated 3D bone ablation with depth control. Inline coherent imaging (ICI) is used to monitor ablation dynamics in real-time with micron precision. ICI data is processed to extract ablation depth, enabling feedback control of depth via laser pulse number. This allows precise ablation of complex 3D structures in bone with minimal thermal damage to surrounding tissue. The root mean square deviation between targeted and ablated shapes was 12.6 micrometers. Histological examination found the heat-affected zone was between 5-10 micrometers on fresh and dry bone samples.
International Conference On Electrical Engineeringanchalsinghdm
ICGCET 2019 | 5th International Conference on Green Computing and Engineering Technologies. The conference will be held on 7th September - 9th September 2019 in Morocco. International Conference On Engineering Technology
The conference aims to promote the work of researchers, scientists, engineers and students from across the world on advancement in electronic and computer systems.
Ieeepro techno solutions 2012 ieee embedded project development of wearable...srinivasanece7
This document describes the development of a 4x4 array of electromagnetic micro-actuators intended for dynamic tactile stimulation. Each actuator is 2.28mm in diameter and 7mm long, allowing integration into a dense array covering an area of 18mm by 21mm. Finite element analysis was used to optimize the design of a voice-coil type actuator that can produce over 26mN of force over a 2100μm stroke. Experimental evaluation showed no crosstalk between actuators spaced 3.3mm apart. The array exceeds the density of alternative designs and meets thresholds for human tactile perception.
A MEMS BASED OPTICAL COHERENCE TOMOGRAPHY IMAGING SYSTEM AND OPTICAL BIOPSY P...Ping Hsu
A fully-functional, real-time optical coherence tomography (OCT) system based on a high-speed, gimbal-less micromachined scanning
mirror is presented. The designed MEMS control architecture allows the MEMS based imaging probes to be connected to a time-domain, a
Fourier domain or a spectral domain OCT system. Furthermore, a variety of probes optimized for specific laboratory or clinical
applications including various minimally invasive endoscopic, handheld or lab-bench mounted probes may be switched between effortlessly
and important driving parameters adjusted in real-time. In addition, artifact free imaging speeds of 33μs per voxel have been achieved
while imaging a 1.4mm×1.4mm×1.4mm region with 5μm×5μm×5μm sampling resolution (SD-OCT system.)
Similar to Act Talk - Gijs Krijnen: "Imitating Cricket mechanosensing: dream or reality?" (20)
ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 07.06.2024.
Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.
2024.03.22 - Mike Heddes - Introduction to Hyperdimensional Computing.pdfAdvanced-Concepts-Team
Presentation in Science Coffee of the Advanced Concepts Team of the European Space Agency.
Date: 22.03.2024
Speaker: Mike Heddes (University of California, Irvine)
Topic: Introduction to Hyperdimensional Computing
Abstract:
Hyperdimensional computing (HD), also known as vector symbolic architectures (VSA), is a computing framework capable of forming compositional distributed representations. HD/VSA forms a "concept space" by exploiting the geometry and algebra of high-dimensional spaces. The central idea is to represent information with randomly generated vectors, called hypervectors. Together with a set of operations on these hypervectors, HD/VSA can represent compositional structures, which, in turn, enables features such as reasoning by analogy and cognitive computing. In this introductory talk, I will introduce the high-dimensional spaces and the fundamental operations on hypervectors. I will then cover applications of HD/VSA such as reasoning by analogy and graph classification.
Isabelle Diacaire - From Ariadnas to Industry R&D in optics and photonicsAdvanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency.
Date: 28.02.2024
Speaker: Isabelle Dicaire (CCTT Optech)
Topic: From Ariadnas to Industry R&D in optics and photonics
The ExoGRAVITY project - observations of exoplanets from the ground with opti...Advanced-Concepts-Team
Presentation in the Science Coffee of the Advanced Concepts Team of the European Space Agency on the 09.02.2024.
Speaker: Sylvestre Lacour (Paris Observatory/LESIA)
Title: The ExoGRAVITY project - observations of exoplanets from the ground with optical interferometry
Abstract: I will talk about the latest observations and results with the GRAVITY instrument installed at the VLTI, Paranal observatory.
Presentation in the Science Coffee hosted by the Advanced Concepts Team of the European Space Agency on the 12.01.2024.
Speaker: Benoit Famaey (CNRS - Observatoire astronomique de Strasbourg)
Title: Modified Newtonian Dynamics
Abstract: Presentation around the topic of MOND / tests of MOND
Presentation in Science Coffee of ESA’s Advanced Concepts Team on the 24.11.2023 by Pablo Gomet (ESA/ESAC)
Abstract:
Current and upcoming space science missions will produce petascale data in the coming years. This requires a rethinking of data distribution and processing practices. For example, the Euclid mission will be sending more than 100GB of compressed data to Earth every day. Analysis and processing of data on this scale requires specialized infrastructure and toolchains. Further, providing users with this data locally is not practical due to bandwidth and storage constraints. Thus, a paradigm shift of bringing users code to the data and providing a computational infrastructure and toolchain around the data is required. The ESA Datalabs platforms is specifically focused on fulfilling this need. It provides a centralized platform with access to data from various missions including the James Webb Space Telescope, Gaia, and others. Pre-setup environments with the necessary toolchains and standard software tools such as JupyterLab are provided and enable data access with minimal overhead. And, with the built-in Science Application Store, a streamlined environment is given that allows rapid deployment of desired processing or science exploitation pipelines. In this manner, ESA Datalabs provides an accessible and potent framework for high-performance computing and machine learning applications. While users may upload data, there is no need to download data, thus mitigating the bandwidth burden. As the computational load is handled within the computational infrastructure of ESA Datalabs, high scalability is achieved, and resources can be requisitioned as needed. Finally, the platform-centric approach facilitates direct collaboration on code and data. Currently, the platform is already available to several hundred users, regularly showcased in dedicated workshops and interested users may request access online.
Jonathan Sauder - Miniaturizing Mechanical Systems for CubeSats: Design Princ...Advanced-Concepts-Team
ESA/ACT Science Coffee presentation of Nov 3, 2023 by Jonathan Sauder (NASA/JPL/CalTech)
Abstract:
In the past decade CubeSats have evolved from small university educational opportunities to industry and governments using them make new discoveries and monetize space. While originally most missions were restricted to Low Earth Orbit (LEO), CubeSats have begun to increase their reach across the solar system with the advent of Mars Cube One (MarCO) in 2018. However, with the small, constrained CubeSat form factor there is often a need to expand the CubeSat through deployable mechanical systems once the satellite is in space. In reviewing many CubeSat missions, it has been found that over 90% have deployable structures actuated by a mechanical system. These include antennas, solar panels, and instrument booms.
There is a key challenge in CubeSat mechanism design, as one can not just shrink larger spacecraft mechanisms down to the CubeSat form factor. Rather, these mechanisms must be designed in a way to reduce complexity, which means good mechanical design principles are paramount. From experience designing the deployment mechanisms for the MarCO and RainCube missions, working on deployable antenna technology, and reviewing deployables used on hundreds of other CubeSats, several key principles have been identified for developing miniaturized mechanical systems for mechanisms. These principles will be discussed in the presentation, and examples will be provided. Small satellite missions can be made more robust by incorporating good design principles into future miniaturized mechanical systems, which in turn with result in greater reliability of small satellites. This is especially important given that many small satellites have mission critical deployables, and the ever-increasing number of interplanetary small satellite missions and opportunities.
Artificial intelligence (AI) is a potentially disruptive tool for physics and science in general. One crucial question is how this technology can contribute at a conceptual level to help acquire new scientific understanding or inspire new surprising ideas. I will talk about how AI can be used as an artificial muse in quantum physics, which suggests surprising and unconventional ideas and techniques that the human scientist can interpret, understand and generalize to its fullest potential.
EDEN ISS is a European project focused on advancing bio-regenerative life support systems, in particular plant cultivation in space. A mobile test facility was designed and built between March 2015 and October 2017. The facility incorporates a Service Section which houses several subsystems necessary for plant cultivation and the Future Exploration Greenhouse. The latter is built similar to a future space greenhouse and provides a fully controlled environment for plant cultivation. The facility was setup in Antarctica in close vicinity to the German Neumayer Station III in January 2018 and successfully operated between February and November of the same year. During that nine month period around 270 kg of food was produced by the crops cultivated in the greenhouse. Besides the mere production of food for the overwintering crew (10 people) of the Neumayer Station III a large number of experiments were conducted. These experiments delivered valuable data for engineering of space greenhouses, horticultural sciences, microbiology, food quality and safety, psychology and operation of a food production facility in a remote environment. Component and subsystem validation was conducted to better understand engineering issues when building a space greenhouse. Fresh edible and inedible biomass was measured upon every harvest, dry weight ratios were determined and crop life cycle data was collected. More than 400 plant and microbiological samples were taken for the microbiology, and food quality and safety scientists working on the project. Some samples were composed of freeze dried plant tissue, but most samples were frozen at -40°C and shipped to Europe for analysis in specialized laboratories. A survey with the overwintering crew was executed to get information about the impact of the greenhouse on the crew during the nine month long winter season. Operation procedures for horticultural tasks, but also for system maintenance were developed and tested. The required crewtime, energy and resources demands were measured. This presentation shows an overview of the research results of the EDEN ISS research campaign in Antarctica close to the Neumayer Station III.
The quest to create artificial general intelligence has largely followed a “brain in a vat” approach, aiming to build a disembodied mind that can carry out the kinds of logical reasoning and inference that humans are capable of, usually demonstrated through language. This approach may some day pay off, but it’s not how nature did it. Intelligence did not evolve to solve abstract problems – it evolved to adaptively control behaviour in the real world. Living organisms are agents that can act, for their own reasons, in pursuit of their own goals – most fundamentally, to persist as a self through time. By charting the evolution of agency, we can see the origins of action and the concomitant emergence of behavioural control systems; the transition from pragmatic perception-action couplings to more and more internalised semantic representations; and, on our lineage, a trajectory of increasing cognitive depth and ever more sophisticated mapping and modelling of the world and the self. The resultant accumulation of causal knowledge grants the ability to simulate more complex scenarios, to predict and plan over longer timeframes, to optimise over more competing goals at once, and ultimately to exercise conscious rational control over behaviour. In this way, intelligent entities – agents – evolved, with greater and greater autonomy, flexibility, and causal power in the world. To realise intelligence in artificial systems, it may similarly be necessary to develop embodied, situated agents, with meaning and understanding grounded in relation to real-world goals, actions, and consequences.
Brains rely on spiking neural networks for ultra-low-power information processing. Building artificial intelligence with similar efficiency requires learning algorithms to instantiate complex spiking neural networks and brain-inspired neuromorphic hardware to emulate them efficiently. Toward this end, I will briefly introduce surrogate gradients as a general framework for training spiking neural networks and showcase their robustness and self-calibration capabilities on analog neuromorphic hardware. Drawing further inspiration from biology, I will discuss the impact of homeostatic plasticity and network initialization in the excitatory-inhibitory balanced regime on deep spiking neural network training. Finally, I will show how approximations relate surrogate gradients to biologically plausible online learning rules with a minor impact on their effectiveness.
The promise of computer aided manufacturing is to make materializable structures that could not be fabricated using traditional methods. An example is 3D printed lattices, where variation in the lattice geometry and print media can define a vast spectrum of resulting material behaviour, ranging from fully flexible forms to completely stiff examples with high strength. While these “architected materials” offer huge promise for industrial applications, in practice they are difficult to generate and explore digitally, and even harder to simulate for mechanical testing. In this talk I will outline a range of approaches to the study of architected materials using machine learning. I will describe several projects using graph neural networks (GNNs) to model lattice geometry, and report on a few recent works that construct inverse models. These approaches are progress toward better methods for approximation of the material behaviour of the space of all lattice geometries, offering potential for real-time material feedback at the design stage, and a streamlined selection process for architected materials.
Electromagnetically Actuated Systems for Modular, Self-Assembling and Self-Re...Advanced-Concepts-Team
This talk will cover two research projects within the MIT Space Exploration Initiative’s microgravity self-assembly portfolio. While the sizes and geometries of today’s space structures are limited by launch mass and volume, modular reconfigurability may support tightly packing structure modules over multiple launches and provide for adaptation to unforeseen circumstances once deployed. Self-assembly methods also promise to reduce crew EVA construction time on-orbit, when leveraged for large-scale habitat structures. We will report on a quasi-stochastic self-assembly hardware platform, and accompanying robotics simulation, for hollow buckyball shells in orbit. This talk will also introduce a reconfigurable space structure based on electromagnetically pivoting cubes that originated in the ACT. Both projects will show recent hardware for fully untethered modules, results from physical experiments on parabolic flights and a 30-day ISS mission, and simulation approaches for planning and characterizing self-assembly and reconfigurability.
HORUS (Hyper-effective nOise Removal U-net Software) is a cutting-edge AI tool designed to enhance Lunar Reconnaissance Orbiter (LRO) optical low-light imagery of the Moon's shadowed regions by removing most of the CCD-related and photon noise. For the first time, HORUS enables scientists and engineers to identify intra-shadow geologic features (craters, boulders, etc.) as small as 3 meters across, making this tool uniquely useful for applications such as geologic mapping, landing site selection, hazard recognition, and mission planning, directly supporting the robotic and crewed exploration of the Moon's south pole.
META-SPACE: Psycho-physiologically Adaptive and Personalized Virtual Reality ...Advanced-Concepts-Team
This document proposes developing an adaptive virtual reality system called "meta-space" to promote well-being for astronauts and others in isolated environments. It would collect physiological and behavioral data to detect psychological states and adapt VR content accordingly, such as virtual escapes of Earth or interactive games. A proposed development plan includes exploring signals, combining them into an adaptive layer, generating the virtual world, and optimizing the headset through testing.
The Large Interferometer For Exoplanets (LIFE) II: Key Methods and TechnologiesAdvanced-Concepts-Team
The LIFE initiative has the goal to develop the science, the technology and a roadmap for an aspiring space mission that will allow humankind to detect and characterize, via nulling interferometry, the atmospheres of hundreds of nearby extrasolar planets including dozens that may be similar to Earth. This follow-up talk will tackle more of the techniques and technologies that will enable such an ambitious undertaking. I will outline the underlying measuring principle, and provide some overview over essential technologies, their current status and necessary developments.
Black holes have evolved from theoretical prediction to accepted hypothesis, due to the wealth of new discoveries in the last decades. In this talk I will discuss the observational evidence for the existence of black holes of different sizes and what we know about their evolution based on observations and theory. I will also describe what Quasars and Active Galactic Nuclei are, and how these extremely luminous objects can be used to study black holes at the early ages of the Universe.
In vitro simulation of spaceflight environment to elucidate combined effect o...Advanced-Concepts-Team
Long-term exposure to microgravity, ionizing radiation and increased levels of psychological stress can cause changes in the astronauts’ skin, resulting in skin rashes, itches and delayed wound healing during space missions. There is still a lack of understanding how the complex spaceflight environment induces these defects. This PhD project aims to investigate how exposure to a combination of spaceflight stressors can affect the structure and function of the skin, and how they can hamper wound healing. For this we have developed in vitro simulation models and are exposing primary human dermal fibroblasts to hydrocortisone, ionizing radiation and simulated microgravity. Results indicate a significant negative effect of hydrocortisone as well as simulated microgravity on wound healing capability of dermal fibroblasts. Furthermore, a project has been initiated with the support of the European Space Agency Academy “Spin Your Thesis!” Campaign, aiming to investigate the effects of an increased gravitational force on fibroblast function related to wound healing. Altogether the results of this PhD project will give more insights into the effects of combined spaceflight stressors on dermal skin cells, and improve risk assessment for human deep space exploration.
The Large Interferometer For Exoplanets (LIFE): the science of characterising...Advanced-Concepts-Team
Studying the atmospheres of a statistically significant number of rocky, terrestrial exoplanets - including the search for habitable and potentially inhabited planets - is one of the major goals of exoplanetary science and possibly the most challenging question in 21st century astrophysics. However, despite being at the top of the agenda of all major space agencies and ground-based observatories, none of the currently planned projects or missions worldwide has the technical capabilities to achieve this goal. In this talk we present new results from the LIFE Mission initiative, which addresses this issue by investigating the scientific potential of a mid infrared nulling interferometer observatory. Here we will focus on the mission's yield estimates, our simulator software as well as various exemplary science cases such as observing Earth- and Venus-twins or searching for phosphine in exoplanetary atmospheres.
Vernal pools are ephemeral wetland ecosystems that provide habitat for specialized plants and animals. They form "archipelagos" distributed across the landscape. Microbial communities in vernal pool soil and water show environmental filtering between habitats. Next-generation sequencing of soil samples revealed differences in microbial composition between soil, wet soil, and water. Species diversity and community composition changes with increasing spatial distance between pools, following a distance-decay pattern. Vernal pools may provide insights into the origins and mechanisms of biodiversity as well as how biodiversity responds to environmental changes. As a new frontier for science, further study of vernal pool ecosystems can help us understand the role of symbiosis and adaptation in life.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdfMalak Abu Hammad
Discover how MongoDB Atlas and vector search technology can revolutionize your application's search capabilities. This comprehensive presentation covers:
* What is Vector Search?
* Importance and benefits of vector search
* Practical use cases across various industries
* Step-by-step implementation guide
* Live demos with code snippets
* Enhancing LLM capabilities with vector search
* Best practices and optimization strategies
Perfect for developers, AI enthusiasts, and tech leaders. Learn how to leverage MongoDB Atlas to deliver highly relevant, context-aware search results, transforming your data retrieval process. Stay ahead in tech innovation and maximize the potential of your applications.
#MongoDB #VectorSearch #AI #SemanticSearch #TechInnovation #DataScience #LLM #MachineLearning #SearchTechnology
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Fueling AI with Great Data with Airbyte WebinarZilliz
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
leewayhertz.com-AI in predictive maintenance Use cases technologies benefits ...alexjohnson7307
Predictive maintenance is a proactive approach that anticipates equipment failures before they happen. At the forefront of this innovative strategy is Artificial Intelligence (AI), which brings unprecedented precision and efficiency. AI in predictive maintenance is transforming industries by reducing downtime, minimizing costs, and enhancing productivity.
Generating privacy-protected synthetic data using Secludy and MilvusZilliz
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc
How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slackshyamraj55
Discover the seamless integration of RPA (Robotic Process Automation), COMPOSER, and APM with AWS IDP enhanced with Slack notifications. Explore how these technologies converge to streamline workflows, optimize performance, and ensure secure access, all while leveraging the power of AWS IDP and real-time communication via Slack notifications.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
Ocean lotus Threat actors project by John Sitima 2024 (1).pptxSitimaJohn
Ocean Lotus cyber threat actors represent a sophisticated, persistent, and politically motivated group that poses a significant risk to organizations and individuals in the Southeast Asian region. Their continuous evolution and adaptability underscore the need for robust cybersecurity measures and international cooperation to identify and mitigate the threats posed by such advanced persistent threat groups.
A Comprehensive Guide to DeFi Development Services in 2024Intelisync
DeFi represents a paradigm shift in the financial industry. Instead of relying on traditional, centralized institutions like banks, DeFi leverages blockchain technology to create a decentralized network of financial services. This means that financial transactions can occur directly between parties, without intermediaries, using smart contracts on platforms like Ethereum.
In 2024, we are witnessing an explosion of new DeFi projects and protocols, each pushing the boundaries of what’s possible in finance.
In summary, DeFi in 2024 is not just a trend; it’s a revolution that democratizes finance, enhances security and transparency, and fosters continuous innovation. As we proceed through this presentation, we'll explore the various components and services of DeFi in detail, shedding light on how they are transforming the financial landscape.
At Intelisync, we specialize in providing comprehensive DeFi development services tailored to meet the unique needs of our clients. From smart contract development to dApp creation and security audits, we ensure that your DeFi project is built with innovation, security, and scalability in mind. Trust Intelisync to guide you through the intricate landscape of decentralized finance and unlock the full potential of blockchain technology.
Ready to take your DeFi project to the next level? Partner with Intelisync for expert DeFi development services today!
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...Tatiana Kojar
Skybuffer AI, built on the robust SAP Business Technology Platform (SAP BTP), is the latest and most advanced version of our AI development, reaffirming our commitment to delivering top-tier AI solutions. Skybuffer AI harnesses all the innovative capabilities of the SAP BTP in the AI domain, from Conversational AI to cutting-edge Generative AI and Retrieval-Augmented Generation (RAG). It also helps SAP customers safeguard their investments into SAP Conversational AI and ensure a seamless, one-click transition to SAP Business AI.
With Skybuffer AI, various AI models can be integrated into a single communication channel such as Microsoft Teams. This integration empowers business users with insights drawn from SAP backend systems, enterprise documents, and the expansive knowledge of Generative AI. And the best part of it is that it is all managed through our intuitive no-code Action Server interface, requiring no extensive coding knowledge and making the advanced AI accessible to more users.
Monitoring and Managing Anomaly Detection on OpenShift.pdfTosin Akinosho
Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
Nunit vs XUnit vs MSTest Differences Between These Unit Testing Frameworks.pdfflufftailshop
When it comes to unit testing in the .NET ecosystem, developers have a wide range of options available. Among the most popular choices are NUnit, XUnit, and MSTest. These unit testing frameworks provide essential tools and features to help ensure the quality and reliability of code. However, understanding the differences between these frameworks is crucial for selecting the most suitable one for your projects.
Digital Marketing Trends in 2024 | Guide for Staying AheadWask
https://www.wask.co/ebooks/digital-marketing-trends-in-2024
Feeling lost in the digital marketing whirlwind of 2024? Technology is changing, consumer habits are evolving, and staying ahead of the curve feels like a never-ending pursuit. This e-book is your compass. Dive into actionable insights to handle the complexities of modern marketing. From hyper-personalization to the power of user-generated content, learn how to build long-term relationships with your audience and unlock the secrets to success in the ever-shifting digital landscape.
1. Imitating cricket mechanosensing:
Dream or reality?
Gijs Krijnen & Jerôme Casas*
Transducers Science & Technology Group, MESA+/Impact Research Institutes,
University of Twente, Enschede, The Netherlands
* Institut de Recherche en Biologie de l'Insecte
IRBI UMR CNRS 6035, Université de Tours, France
2010, Tuesday May 18
2. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Overview
● Why biomimetic sensors?
● MEMS (& what it is not)
● Artificial flow-sensitive mechano-sensory hairs
● Sensor Principle, Design,Fabrication & Characterization
● Adaptability, Nonlinearity and Stochastic Resonance
● From MEMS to Biology
● Biomimetic Hairsensors: Dream or Reality?
● Conclusions
2
2010, Tuesday May 18
3. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Biomimetic Sensory Research Drivers
● Principles and versatility
● Performance
Sensitivity
Directionality
Accuracy
Dynamic range
(Reduction) of cross-sensitivity
● Power consumption / efficiency
● Size / density of sensors
● Robustness
● (Examples for) Multi-modal sensory integration
3
2010, Tuesday May 18
4. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
The Chase Scene
Courtesy J. Casas, IRBI, Univ. de Tours
Wolfspider chasing a wood-cricket
4
2010, Tuesday May 18
5. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Cricket Hair Sensors
Acheta Domestica
Photograph courtesy of J. Casas et. al.
5
2010, Tuesday May 18
6. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Cricket Sensory Hairs Make Sense (I)
(T. Shimozawa et al, in Sensors and Sensing in Bio. and Eng. 2003)
6
2010, Tuesday May 18
7. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Cricket Sensory Hairs Make Sense (I)
(T. Shimozawa et al, in Sensors and Sensing in Bio. and Eng. 2003)
6
2010, Tuesday May 18
8. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Cricket Sensory Hairs Make Sense (II)
(Adapted from Raangs, 2005)
● Sound:
Pressure: P(t,r)
Particle velocity: U(t,r)
● U prevails
Near source (r < λ/2π)
Small source (R<λ/2π)
● Crickets & predators:
f=10 .. 100 Hz λ > 3 m
few cm source R<0.1 m
interaction 0 .. 1 m (very) near field (K. Beissner , JASA 71, pg 1406, 1982)
7
2010, Tuesday May 18
9. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Flow Mediated Perception
Courtesy J. Casas, IRBI, Univ. de Tours
Movie of Fluid MovementParticle Image Velocimetry
Flow Field Extraction
8
2010, Tuesday May 18
10. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Flow Mediated Perception
Spider running speed is 9.4 cm/s. Line is statistical fit.
Crickets can perceive running spiders at several cm’s
(Casas et al., 2008 PLoS ONE 3(5): e2116)
Let's make artificial
hair-sensors
9
2010, Tuesday May 18
11. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
MEMS (& What it is not)
10
2010, Tuesday May 18
12. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Sequential Fabrication Process: 2.5D
0) Si/Glass substrate
1) Add material in thin layer (0.1 – 10 µm thick)
2) Apply a photolithographical mask
3) Etch unnecessary parts (selectively)
4) Remove mask
5) Structure Ready or Start from 10
Haveaparty
From2-12weeks
Failure /
Incompatibility
11
2010, Tuesday May 18
13. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Photolithography
● Spin photoresist
12
● Etch through holes
and remove photoresist
● Illuminate through mask
● Develop image
2010, Tuesday May 18
14. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
A
B
C
D
E
Surface micromachining
● Sacrificial layer
13
● Patterning
● Structural layer
● Patterning
● Selective etching
& sacrificial release
2010, Tuesday May 18
15. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
MEMS
● No free-form technology (2.5D)
● Stiff materials (4 – 300 GPa)
● Limited range of dimensions
100 nm – 1 cm in plane
10 nm – 10 µm out of plane
● Limitation due to stress
● Scaling behaviour
Surface forces dominate body forces
No quantum physics (no nano)
Full 3D
Range of (flexible) materials
Fewer range limitations
0.1 nm – 30 m
?? flexible materials
Scaling behaviour
Scale dependent
all physics
BIOLOGY
14
2010, Tuesday May 18
16. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
15
Artificial Flow-Sensitive Hair Sensors
2010, Tuesday May 18
17. 12/02/2010
Imitating cricket mechanosensing: dream or reality?
Why MEMS Hair - Sensors?
● Why hairs?
can be arranged in high density arrays ⇒ high spatial resolution
flow pattern measurements ⇒ flow camera
● Why measuring flow or particle velocity?
near field sensitivity, small sources
vector ⇒ directionality
● Possibility for Acoustics?
Frequency resolved flow measurements
Electro-mechanical signal-processing
● Why MEMS?
the usual: batchwise & parallel fabrication of many (arrays of) hairs,
small structures, integration, interfacing, etc.
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Artificial Sensory Hairs
● Design considerations
Transduction principle
Density of hair-sensors
Directionality
Sensitivity
Y. Ozaki et al., Proc. MEMS 2000, pg 531
D.K. KIM et. Al. , Jpn. J. Appl. Phys.
Vol. 39 (2000) pp. 7134–7137
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Artificial Sensory Hairs: Liu Group Illinois
● Sensitivity: 0.7 mm/s
In water
@ 50 Hz
Bandwidth 2 Hz
N. Chen, et. al, Journal of MEMS 16, pp 999 - 1014, 2007
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Sensor Principle & Optimization
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Sensor considerations
● Small displacements (nm-scale):
Requires high sensitivity
● Array application:
Low power consumption ⇒ Generator type sensor
Small number of interconnections
Capacitive
differential
Piezo-
Electric
Piezo
Resistive
Thermo
Resistive
Power-consumption + + + + +/- - -
Interconnections # 2, 3 2 2/4 2/4
Thermal Xtalk + + + + - - -
Technology +/- - +/- +
Parasitics - - - - +/- +
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Conceptual Sensor Structure
(M. Dijkstra et al., J. Micromech. Microeng. 15 (2005) S132–S138)
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● Mechanical system:
⇒ Damped 2nd order (J,S,R)
● Oscillating Flow:
⇒ Stokes/Rayleigh profile
⇒ Boundary layer, Strouhal number,
● Driving torque:
⇒ Stokes drag force
⇒ Hair length, diameter
● Capacitance changes:
⇒ Analytical expressions
⇒ Capacitor geometry
⇒ Stress & curvature
Courtesy J. Casas
Hair-Sensor Physics
(After T. Shimozawa et al, JCPA, 1998)
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Model (I): Mechanical Response
(T. Shimozawa, et al., J. Comp. Physiology A 183, 171-186, 1998)
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Model (I): Mechanical Response
(T. Shimozawa, et al., J. Comp. Physiology A 183, 171-186, 1998)
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Model (II): Predictions
Boundary layer imposes strong
length dependency
⇒ L>400 µm (100 Hz)
Influence hair diameter small
(G. Krijnen et al., Proc. of SPIE Vol. 6592, 65920F, 2007)
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Model (II): Predictions
Boundary layer imposes strong
length dependency
⇒ L>400 µm (100 Hz)
Influence hair diameter small
(G. Krijnen et al., Proc. of SPIE Vol. 6592, 65920F, 2007)
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Model (II): Predictions
Boundary layer imposes strong
length dependency
⇒ L>400 µm (100 Hz)
Influence hair diameter small
(G. Krijnen et al., Proc. of SPIE Vol. 6592, 65920F, 2007)
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● FoM = usable bandwidth × sensitivity
● Bandwidth proportional to ω0:
● Sensitivity proportional to:
● Figure of Merit:
● FOM Crickets / FOM Artificial Hairs @ 1 mm: 68
Long, thin, lightweight hairs: D: 8 vs 50 µm
Soft suspension: S: 2.10-11 vs 8.10-9 Nm/rad
Model (III): Figure of Merit
(G. Krijnen et al., Proc. of SPIE Vol. 6592, 65920F, 2007)
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Model (IV): FoM and Scaling in Crickets
Allometric scaling: FoM changes by a factor of 7, Q by a factor of < 2
(T. Shimozawa, et al., J. Comp. Physiology A 183, 171-186, 1998)
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Model (V): Capacitive Sensing
● Capacitance change per unit of rotation:
(G. Krijnen et al., Proc. of SPIE Vol. 6592, 65920F, 2007)
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● Rectangular membrane with curvature up to δ:
● Optimization
Long membrane
Small gap
No curvature (stress)
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Model (VI): Compliant Materials
● How to optimise rotational and vertical stiffness?
● Rotational stiffness given by:
● Vertical stiffness:
● Ratio for given S=S0:
Short beams of low Youngs modulus material!
Use what the crickets use
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Sensor Fabrication & Characterization
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Christiaan Bruinink, MEMS 2009
Fabrication of 3nd Generation Sensors
Optical microscope image
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Fabricated Devices
● Single layer SU-8 (470 µm), Cr electrodes
● Sensors parallel to increase C
● “Cercus” shape
● Double layer SU-8 (980 µm)
● 1 µm gap
● 2 diameter hairs (75% lower J)
● Al electrodes, 0.6 µm gap
(G. Krijnen et al., Proc. EuroSensors 2006)
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Characterization (I)
WLIM (3G Sensor)
● 200 µm x 90 µm Membrane
● Partial electrode areas
● ~ 200 nm downward curvature
(2 - 3 µm upward in 2G)
●Optical effects
Ram. Kottumakulal
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Characterization (II)
Sensor Interfacing
● Differential capacitive readout
● Charge-amplifier = op-amp + capacitive feedback
(charge-to-voltage converter)
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Characterization (III)
Capacitive Read-out, Acoustic Actuation
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Characterization (IV)
Frequency Response
Type A: Ls=75 Ws=10 Q=2.3
Type W: Ls=100, Ws=10, Q=1.8
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Characterization (V)
Sensitivity of 3G Sensors
●Measured with
Lock In Amplifier
1 Hz BW
●100 hairs in parallel
●Sensitivity: 2 mm/s
(⇒ 100 hairs, BW 1 kHz)
●Cricket: 30 µm/s
(single hair, BW ≈ 0.3 - 1 kHz)
Marcel Kolster
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Characterization (VI):
Directivity (3G Sensors)
(Ram. Kottumakulal et.al, Transducers 2009)
● Other modes
● Viscous coupling
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Adaptability
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Adaptability (I): ES Spring Softening
● Add bias Voltage U
(G. Krijnen et al, Nanotechnology, vol 17, pp. 84-89, 2006)
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● Transduction Theory
● On application of DC bias:
Lower resonance frequency
Higher sensitivity
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Adaptability (II): Increasing Sensitivity
Acoustic Actuation (2G Sensors)
● Lines ⇒ model
● Fitted for Udc=0
● κ /S0=0.0171 V-2 (fit)
● κ /S0=0.0167 V-2
(calculated)
● Trend predicted well
(J. Floris et al., Proc. Transducers 2007, pg 1267)
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Adaptability (III): Shifting fres
Electrostatic Actuation 2G sensors
● Fitted for Udc=0
● κ /S0=0.0160 V-2 (fit)
● κ /S0=0.0167 V-2
(calculated)
(J. Floris et al., Proc. Transducers 2007, pg 1267)
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Adaptability (IV): Response Curve Predictions
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Happy with Nonlinearity & Noise
Electro Mechanical Signal Processing
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Happy with noise: Stochastic Resonance
● Threshold system
model for flow detection in grayfish
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Stochastic Resonance in Cricket Perception
● Low signal level:
Transinformationrate ↑
with noise ↑
High noise power
⇒ saturation
● High signal level:
Deterioration
with noise ↓
Levin, Miller, Nat. 380, 1996, p165
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Negative Spring-Stiffness & Amplification (1)
● Lateral line sensors &
hair-cells in the mammalian
cochlea have extended
dynamic range up to 50 dB
● Combination of two (sets of) hairs with
connected tip-links
● Opening of ion-channels adds force to
the moving cilia
● Net effect: negative spring stiffness
(Hundspeth, C. R. Biologies 328 (2005) 155–162)
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Happy with Noise: Stochastic Resonance
● Double potential energy well
● Skewed energy function lowers
threshold unidirectionally
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Negative Spring-Stiffness & Amplification (2)
● DC-biasing scheme
causes instability before
negative spring-stiffness is
obtained
● Solution: displaced comb-like structure
● No pull-in
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From MEMS to Biology
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Good hints,
but difficult to interpret…
….back to technology…
How Are Cricket Arrays Optimised?
● Aerodynamics
● Viscous Coupling
● Directivity
T. Steinmann, J. Casas
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From MEMS to Biology: Viscous Coupling
● Viscous coupling between hairs
hard to do on crickets
suggested for
hair-distances < 10·Dh
special structures
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f=80 Hz f=160 Hz f=320 Hz
MEMS High density Arrays
● Interaction between flow and hairs ⇒ viscous coupling
● Hairs-sensors need to be judiciously spaced
● MEMS helps biologist
T. Steinmann, J. Casas
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Biomimetic Mechanosensing:
Dream or Reality
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MEMS Hairsensors: Dream or Reality?
● Mechanical performance comparable!
optimised damping (impedance matching)
small rotational stiffness / moment of inertia
● Mechanical robustness:
Use non-brittle materials (polymers, metals)
Prevent rotational / vertical pull-in
● Cross-sensitivity
Gravitation & Inertial (cross-) effects
Limitation to the shapes we can make
● Capacitive read-out inferior to neural signal acquisition
fF changes on pF parasitics: prone to noise / interference
How to get digital spike like signals (electro-mechanically)
● Sensor arrays:
Which spatio-temporal signatures?
Efficient (low-power) signature recognition?
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Cricket Signal Processing
Neurons provide:
●efficient
●fast
●Parallel
●robust
information
collection
transport &
processing
How do we get this?
(Insausti, Lazzari et al. Submitted to Journal of Morphology)
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Distributed Arrays (Dreams)
● Sensor Array
● Single hair interfacing
● Spatio-temporal flow distribution
● E.g. spatio-frequency distribution 10 Hz
20 Hz
30 Hz
Courtesy of J. Casas et. al.
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Distributed/Dispersed Sensing
● Arrays of hairs with single hair interfacing
● Detection of
spatio-temporal
patterns
(signatures)
● First results
are promising
(R. Wiegerink et al., Proc. IEEE Sensors 2007, pg 1073)
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• 1 × 4 array
• {1.05 - 1.10 - 1.15 - 1.20} MHz
• Single charge amplifier
• 75 Hz air flow source
(Results of Ahmad Dagamseh)
FDM Implementation
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• 1 × 4 array
• {1.05 - 1.10 - 1.15 - 1.20} MHz
• Single charge amplifier
• 75 Hz air flow source
(Results of Ahmad Dagamseh)
FDM Implementation
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Successful simultaneous measurement from (1x4) array
FDM Implementation
(Ahmad Dagamseh et. al, accepted for publication in Sensors & Actuators)
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Bio-Inspired Measurements
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Work by the Chang Liu Group, Univ. Ill.
● Lateral line
● Hot Wire Anemometers
● Piezo resistive sensors
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(Journal on Applied Signal Processing, Volume 2006, Article ID 76593, Pages 1–8)
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Work by the Chang Liu Group, Univ. Ill.
● Lateral line
● Hot Wire Anemometers
● Piezo resistive sensors
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(Journal on Applied Signal Processing, Volume 2006, Article ID 76593, Pages 1–8)
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Source localization
(Results of Ahmad Dagamseh)
Lateral Line System
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at : different source-lateral line distance
Virtual lateral line re-constructs dipole field
at : different sphere diameter
different vibration frequencies
(Results of Ahmad Dagamseh)
Virtual Lateral Line System
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Lateral line – source distance is the only effective parameter
(Results of Ahmad Dagamseh)
Virtual Lateral Line System
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Bio-Inspired Measurement
2 x RealTime speed
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Conclusions
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Conclusions
● We have
successfully fabricated SU-8 sensory hairs up to 1 mm
shown capacitive hair sensor arrays with good sensitivity
demonstrated adaptability of sensitivity
interfacing of arrays-sensors
shown bioinspired sensing scheme (virtual lateral line)
● We like to
Further improve the sensors by hairs, lower spring-stiffnesses
Reduce influence of parasitic capacitances, improve electronics
● We can
Adapt sensors by DC biasing
Use parametric Amplification, Stochastic Resonance
● We should borrow from nature
Soft materials
Dendrites and neurons
Or be Real Smart
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Acknowledgements
Dominique Altpeter, John van Baar, Erwin Berenschot, Rick de Boer, Meint de Boer,
Christiaan Bruininck, Ahmad Dagamseh, Marcel Dijkstra, Michiel van Dijk, Harmen
Droogendijk Arjan Floris, Bjorn Hagendoorn, Nima Izadi, Theo Lammerink , Marcel
Kolster, Winfred Kuipers, Claudio Lazzaro, Remco Sanders, Satya Shankar Siripurapu,
Thomas Steinmann, Vitaly Svetovoy, R. Jaganatharaja (Ram), Bas Verlaat, Remco
Wiegerink, Henk van Wolferen.
The EU for funding the Cicada/Cilia projects
NWO for the BioEARS Vici grant
The Cicada/Cilia teams
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Acknowledgements
Dominique Altpeter, John van Baar, Erwin Berenschot, Rick de Boer, Meint de Boer,
Christiaan Bruininck, Ahmad Dagamseh, Marcel Dijkstra, Michiel van Dijk, Harmen
Droogendijk Arjan Floris, Bjorn Hagendoorn, Nima Izadi, Theo Lammerink , Marcel
Kolster, Winfred Kuipers, Claudio Lazzaro, Remco Sanders, Satya Shankar Siripurapu,
Thomas Steinmann, Vitaly Svetovoy, R. Jaganatharaja (Ram), Bas Verlaat, Remco
Wiegerink, Henk van Wolferen.
The EU for funding the Cicada/Cilia projects
NWO for the BioEARS Vici grant
The Cicada/Cilia teams
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