Dr. Harold Weinstock presents an overview of his program, Quantum Electronic Solids, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Monitoring and Controlling Charge-Density-Waves in 2D MaterialsKevin Chee
Several layered transition metal dichalcogenides (TMDs) exhibit unusually high transition temperatures to different charge-density-wave (CDW) symmetry-reducing phases, revealing interesting physics, and opening possibility for practical applications of such materials. One of the most promising materials, 1T-TaS2, has the CDW transition between the nearly-commensurate (NC-CDW) and the incommensurate (IC-CDW) phases at 350 K, the transition to the normal metal phase at 550 K − 600 K. In this invited talk, I will review our recent results on controlling the CDW phase transitions in 2D materials with applied electric bias, and monitoring them via low-frequency electronic noise spectroscopy [1-6]. The noise spectroscopy has been particularly effective for monitoring the switching from the IC-CDW phase to the normal metal phase in 1T-TaS2. The noise spectral density exhibits sharp increases at the phase transition points, which correspond to the step-like changes in resistivity. The noise spectroscopy was instrumental in revealing the “hidden phase transitions” in vertical 1T-TaS2 devices. Preliminary data on the “narrow-band noise” in quasi-2D CDW devices will also be presented. We found that the 1T-TaS2 CDW devices reveal exceptional hardness against X-ray and proton radiations. We explained this property of the CDW devices by the high carrier concentration in all their phase states, two-terminal design, and the thin-film channel geometry.
Electrostatic Self Assembled Films For Photonics Ph D DefensePatrick Neyman
Electrostatic Self-Assembled (ESA) films. Structural and morphological properties, and how to control them for use in optical and nonlinear optical applications.
-by Patrick Neyman, PhD
Simulation of AlGaN/Si and InN/Si ELECTRIC –DEVICESijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 μm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed.
http://www.surfacetreatments.it/thinfilms
Commissioning of the JLab Surface Impedance Characterization (SIC) System (Charles Reece - 20')
Speaker: Charles Reece - Jefferson Lab, Newport News (VA) USA | Duration: 20 min.
Abstract
Binping Xiao, Larry Phillips, and Charles Reece
A system for making direct calorimetric measurements of the surface resistance at 7.5 GHz of small samples of variously prepared superconducting surfaces has been commissioned at JLab. The flat, 50 mm diameter sample temperature is regulated independently of the balance of the TE011 sapphire-loaded cavity, enabling Rs and Δλ measurements from 2 K to Tc of the sample. Initial operation, limited by available rf power, has extended to Bpk of 18 mT. The calorimeter resolution is better than 10 nΩ, and the sampled surface area is ~ 0.8 cm2. The SIC has been commissioned with a bulk Nb sample, demonstrating excellent agreement with standard BCS characterizations. Initial application to SRF thin films has begun. We are eager to apply it to non-niobium materials. Preparations for a second generation with extended dynamic range have already begun.
Monitoring and Controlling Charge-Density-Waves in 2D MaterialsKevin Chee
Several layered transition metal dichalcogenides (TMDs) exhibit unusually high transition temperatures to different charge-density-wave (CDW) symmetry-reducing phases, revealing interesting physics, and opening possibility for practical applications of such materials. One of the most promising materials, 1T-TaS2, has the CDW transition between the nearly-commensurate (NC-CDW) and the incommensurate (IC-CDW) phases at 350 K, the transition to the normal metal phase at 550 K − 600 K. In this invited talk, I will review our recent results on controlling the CDW phase transitions in 2D materials with applied electric bias, and monitoring them via low-frequency electronic noise spectroscopy [1-6]. The noise spectroscopy has been particularly effective for monitoring the switching from the IC-CDW phase to the normal metal phase in 1T-TaS2. The noise spectral density exhibits sharp increases at the phase transition points, which correspond to the step-like changes in resistivity. The noise spectroscopy was instrumental in revealing the “hidden phase transitions” in vertical 1T-TaS2 devices. Preliminary data on the “narrow-band noise” in quasi-2D CDW devices will also be presented. We found that the 1T-TaS2 CDW devices reveal exceptional hardness against X-ray and proton radiations. We explained this property of the CDW devices by the high carrier concentration in all their phase states, two-terminal design, and the thin-film channel geometry.
Electrostatic Self Assembled Films For Photonics Ph D DefensePatrick Neyman
Electrostatic Self-Assembled (ESA) films. Structural and morphological properties, and how to control them for use in optical and nonlinear optical applications.
-by Patrick Neyman, PhD
Simulation of AlGaN/Si and InN/Si ELECTRIC –DEVICESijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 μm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed.
http://www.surfacetreatments.it/thinfilms
Commissioning of the JLab Surface Impedance Characterization (SIC) System (Charles Reece - 20')
Speaker: Charles Reece - Jefferson Lab, Newport News (VA) USA | Duration: 20 min.
Abstract
Binping Xiao, Larry Phillips, and Charles Reece
A system for making direct calorimetric measurements of the surface resistance at 7.5 GHz of small samples of variously prepared superconducting surfaces has been commissioned at JLab. The flat, 50 mm diameter sample temperature is regulated independently of the balance of the TE011 sapphire-loaded cavity, enabling Rs and Δλ measurements from 2 K to Tc of the sample. Initial operation, limited by available rf power, has extended to Bpk of 18 mT. The calorimeter resolution is better than 10 nΩ, and the sampled surface area is ~ 0.8 cm2. The SIC has been commissioned with a bulk Nb sample, demonstrating excellent agreement with standard BCS characterizations. Initial application to SRF thin films has begun. We are eager to apply it to non-niobium materials. Preparations for a second generation with extended dynamic range have already begun.
Los días 22 y 23 de junio de 2016 organizamos en la Fundación Ramón Areces un simposio internacional sobre 'Materiales bidimensionales: explorando los límites de la física y la ingeniería'. En colaboración con el Massachusetts Institute of Technology (MIT), científicos de este prestigioso centro de investigación mostraron las propiedades únicas de materiales como el grafeno, de solo un átomo de espesor, y al mismo tiempo más resistente que el acero y mucho más ligero.
The Evolution Of An Electronic Materialdavekellerman
This presentation displays a development effort that took several years. The achieved goal was attained: a complete materials system that may be used to fabricate substrates for high speed and microwave single and multichip semiconductor substrates and packages
Kilohertz-Rate MeV Ultrafast Electron Diffraction for Time-resolved Materials...Yi Lin
Ultrafast electron diffraction (UED) enables direct insight into structural dynamics of solids. Relativistic MeV-scale electron beams yield access to high-momentum scattering and preserve beam coherence, yet their application at high repetition rates for high-sensitivity UED has been limited. We discuss the High Repetition-rate Electron Scattering (HiRES) instrument at Berkeley Lab and its first applications to UED of metallic films and quantum materials. HiRES employs a state-of-the-art photoinjector with RF bunch compression to generate high-brightness, relativistic 0.75 MeV electron pulses with up to 105-106 el./pulse and with highest achievable coherence length of 10 nm. The resulting high momentum range (±10 Å-1) yields access over multiple Brillouin zones. The sub-500 fs electron pulses are provided at 0.1-250 kHz repetition rate, and combined with optical pumping via a 1.03 µm fiber amplifier enable UED of cryogenically cooled materials. We will show examples of first experiments including transient Debye-Waller dynamics in ultrathin metals at kHz repetition rate as well as studies of charge density waves in 2D materials.
Work at LBNL was supported by the DOE Office of Basic Energy Sciences.
О достижениях и планах трех стартапов, вышедших из MICRONOVA (Центр микро- и нанотехнологий Хельсинского Университета Технологий). Один из стартапов - OptoGaN. Источник: http://micronova.tkk.fi/files/Micronova%20Seminar%202005/Blue%20GaN%20LEDs%20by%20MOVPE.pdf
Los días 22 y 23 de junio de 2016 organizamos en la Fundación Ramón Areces un simposio internacional sobre 'Materiales bidimensionales: explorando los límites de la física y la ingeniería'. En colaboración con el Massachusetts Institute of Technology (MIT), científicos de este prestigioso centro de investigación mostraron las propiedades únicas de materiales como el grafeno, de solo un átomo de espesor, y al mismo tiempo más resistente que el acero y mucho más ligero.
The public trial lecture presented by Mohammadreza Nematollahi on 8th of October 2014 at Norwegian University of Science and Technology. The theoretical models and the experimental progress of highly mismatched alloys, as well as their optoelectronic applications are covered.
Dr. Jim Hwang presents an overview of his program, GHz-THz Electronics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Simulation of AlGaN/Si and InN/Si ELECTRIC –DEVICESijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 µm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed
Simulation Of Algan/Si And Inn/Si Electric - Devicesijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 µm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed.
Sputtering of Ga-doped ZnO nanocoatings on silicon for piezoelectric transducersMariya Aleksandrova
This talk was delivered on the 8TH INTERNATIONAL SCIENTIFIC CONFERENCE “TechSys 2019” – ENGINEERING, TECHNOLOGIES AND SYSTEMS, Technical University of Sofia, Plovdiv Branch, 16-18 May 2019. The research is funded by BNSF’s grant KП06-Н27/1.
Xiaoxing Xi - Magnesium Diboride Thin Films for Superconducting RF Cavitiesthinfilmsworkshop
http://www.surfacetreatments.it/thinfilms
Magnesium Diboride Thin Films for superconducting RF cavities (Xiaoxing Xi - 40')
Speaker: Xiaoxing Xi - Temple University | Duration: 40 min.
Abstract
MgB2 has a Tc of 40 K, a low residual resistivity, and a high Hc . RF cavities coated with MgB2 films have the potential for a higher Q and gradient than Nb cavities with an operation temperature of 4.2 K or higher. At Temple University, we have started a project to study issues related to the application of MgB2 to RF cavities, and to coat single-cell RF cavities with MgB2 film for characterization by the collaborators in accelerator-compatible environment. The key technical thrust of this project is the deposition of high quality clean MgB2 films and coatings using a hybrid physical-chemical vapor deposition technique. I will review the progress to date in this project.
Los días 22 y 23 de junio de 2016 organizamos en la Fundación Ramón Areces un simposio internacional sobre 'Materiales bidimensionales: explorando los límites de la física y la ingeniería'. En colaboración con el Massachusetts Institute of Technology (MIT), científicos de este prestigioso centro de investigación mostraron las propiedades únicas de materiales como el grafeno, de solo un átomo de espesor, y al mismo tiempo más resistente que el acero y mucho más ligero.
The Evolution Of An Electronic Materialdavekellerman
This presentation displays a development effort that took several years. The achieved goal was attained: a complete materials system that may be used to fabricate substrates for high speed and microwave single and multichip semiconductor substrates and packages
Kilohertz-Rate MeV Ultrafast Electron Diffraction for Time-resolved Materials...Yi Lin
Ultrafast electron diffraction (UED) enables direct insight into structural dynamics of solids. Relativistic MeV-scale electron beams yield access to high-momentum scattering and preserve beam coherence, yet their application at high repetition rates for high-sensitivity UED has been limited. We discuss the High Repetition-rate Electron Scattering (HiRES) instrument at Berkeley Lab and its first applications to UED of metallic films and quantum materials. HiRES employs a state-of-the-art photoinjector with RF bunch compression to generate high-brightness, relativistic 0.75 MeV electron pulses with up to 105-106 el./pulse and with highest achievable coherence length of 10 nm. The resulting high momentum range (±10 Å-1) yields access over multiple Brillouin zones. The sub-500 fs electron pulses are provided at 0.1-250 kHz repetition rate, and combined with optical pumping via a 1.03 µm fiber amplifier enable UED of cryogenically cooled materials. We will show examples of first experiments including transient Debye-Waller dynamics in ultrathin metals at kHz repetition rate as well as studies of charge density waves in 2D materials.
Work at LBNL was supported by the DOE Office of Basic Energy Sciences.
О достижениях и планах трех стартапов, вышедших из MICRONOVA (Центр микро- и нанотехнологий Хельсинского Университета Технологий). Один из стартапов - OptoGaN. Источник: http://micronova.tkk.fi/files/Micronova%20Seminar%202005/Blue%20GaN%20LEDs%20by%20MOVPE.pdf
Los días 22 y 23 de junio de 2016 organizamos en la Fundación Ramón Areces un simposio internacional sobre 'Materiales bidimensionales: explorando los límites de la física y la ingeniería'. En colaboración con el Massachusetts Institute of Technology (MIT), científicos de este prestigioso centro de investigación mostraron las propiedades únicas de materiales como el grafeno, de solo un átomo de espesor, y al mismo tiempo más resistente que el acero y mucho más ligero.
The public trial lecture presented by Mohammadreza Nematollahi on 8th of October 2014 at Norwegian University of Science and Technology. The theoretical models and the experimental progress of highly mismatched alloys, as well as their optoelectronic applications are covered.
Dr. Jim Hwang presents an overview of his program, GHz-THz Electronics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Simulation of AlGaN/Si and InN/Si ELECTRIC –DEVICESijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 µm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed
Simulation Of Algan/Si And Inn/Si Electric - Devicesijrap
In this work, efficient solar-blind metal-semiconductor photodetectors grown on Si (111) by
molecular beam epitaxy are reported. Growth details are described,the comparison enters the
properties electric of InN/Si and AlGaN/Si photodectors with 0.2 µm of AlGaN and InN layers.
Modeling and simulation were performed by using ATLAS-TCAD simulator. Energy band
diagram, doping profile, conduction current density,I-V caracteristic , internal potential and
electric field were performed.
Sputtering of Ga-doped ZnO nanocoatings on silicon for piezoelectric transducersMariya Aleksandrova
This talk was delivered on the 8TH INTERNATIONAL SCIENTIFIC CONFERENCE “TechSys 2019” – ENGINEERING, TECHNOLOGIES AND SYSTEMS, Technical University of Sofia, Plovdiv Branch, 16-18 May 2019. The research is funded by BNSF’s grant KП06-Н27/1.
Xiaoxing Xi - Magnesium Diboride Thin Films for Superconducting RF Cavitiesthinfilmsworkshop
http://www.surfacetreatments.it/thinfilms
Magnesium Diboride Thin Films for superconducting RF cavities (Xiaoxing Xi - 40')
Speaker: Xiaoxing Xi - Temple University | Duration: 40 min.
Abstract
MgB2 has a Tc of 40 K, a low residual resistivity, and a high Hc . RF cavities coated with MgB2 films have the potential for a higher Q and gradient than Nb cavities with an operation temperature of 4.2 K or higher. At Temple University, we have started a project to study issues related to the application of MgB2 to RF cavities, and to coat single-cell RF cavities with MgB2 film for characterization by the collaborators in accelerator-compatible environment. The key technical thrust of this project is the deposition of high quality clean MgB2 films and coatings using a hybrid physical-chemical vapor deposition technique. I will review the progress to date in this project.
Resonant-tunneling-diode effect in Si-based double-barrier structure sputtere...IJRES Journal
This paper presents the resonant-tunneling-diode (RTD) effect in a SiO2/n-Si/SiO2/p-Si double-barrier structural thin films fabricated using radio frequency (RF) magnetron sputtering at room temperature (300 K). The implementation of a circuit prototype is first accomplished by modulating a Si-based RTD with a solar-cell bias voltage. The important electrical properties of the peak current density and peak-to-valley current ratio (PVCR) are 184 nA/cm2 and 1.67, respectively. The connection between the two RTDs in series is biased by a solar cell. The value of the switching transition time is 24.37 μs; oscillation occurs with an operating frequency of 41.6 KHz. In semiconductor applications, the developed RTD is characterized by stability, enduring environmentally elevated temperature and relative humidity.
Recent research shows the tremendous potential for the development of optical devices viz. photo-detector, optical sources, connectors and applications etc. This is mainly because of the success of optical communication in the recent for gigabit transmission and is intended for terabits transmission in future. In this paper, mathematical model for the optical dependence of I-V, C-V characteristics of MISFET structure (to be used as photo-detector) is reported. Model is based on solution of Poisson‟s and current continuity equation. Proposed structure of MISFET includes, In0.53Ga0.47As used as substrate material and InP as insulator. Light is made to incident perpendicular to the surface. Drain current can be controlled optically by means of varying light intensity of incident radiation. There is significant effect of intensity modulation on IV and CV characteristics of MISFET. As a result of intensity modulation, drain current increases significantly in presence of illumination mainly due to change in carrier concentration of channel results from photo-generated carriers. Simulation of mathematical model is carried out in MATLAB.
Different types of Nanolithography technique.
Types: Electron beam lithography, Photolithography, electron-beam writing, ion- lithography, X-ray lithography, and related images, concepts and graphical views.
I hope this presentation helpful for you.
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Thanking-You
Preeti Choudhary
CMOS logic scaling is reaching a point with gradually diminishing returns. So that is why so-called Beyond CMOS compute paradigms have gained a lot of attention in the last decade. It is however far from trivial to beat advanced ultimately-scaled CMOS logic realisations. Plasmonics wave computing is one potential emerging option which could have better area-performance metrics for high performance computing and especially exascale computing servers. In this talk a review will be provided of the current status of this technology and why and where it could be beneficial.
Dr. John D. Schmisseur presents an overview of his program, Aerothermodynamics & Turbulence, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Chiping Li presents an overview of his program, Energy Conversion and Combustion Sciences, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Mitat A. Birkan presents an overview of his program, Space Propulsion and Power, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Michael Berman presents an overview of his program, Molecular Dynamics & Theoretical Chemistry, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Patrick Bradshaw presents an overview of his program, Sensory Information Systems, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Patrick Bradshaw presents an overview of his program, Human Performance and Biosystems, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. John D. Schmisseur presents an overview of his program, Energy, Power and Propulsion Sciences, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Hugh C. DeLong presents an overview of his program, Natural Materials and Systems, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Joycelyn S. Harrison presents an overview of her program, Low Density Materials, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Charles Lee presents an overview of his program, Organic Materials Chemistry, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Ali Sayir presents an overview of his program, Aerospace Materials for Extreme Environments, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Jim Hwang presents an overview of his program, Adaptive Multimode Sensing, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Gernot S. Pomrenke presents an overview of his program, Photonics and Optoelectronics, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. B.L. "Les" Lee presents an overview of his program, Mechanics of Multifunctional Materials and Microsystems, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Hugh C. DeLong presents an overview of his program, Complex Materials and Devices, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Jay Myung presents an overview of his program, Computational Cognition and Robust Decision Making, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Frederica Darema presents an overview of his program, Dynamic Data Driven Applications Systems (DDDAS), at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Tristan Nguyen presents an overview of his program, Sensing, Surveillance and Navigation, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Tristen Nguyen, presents an overview of his program, Science of Information, Computation and Fusion, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
Dr. Joseph Lyons, PhD presents an overview of his program, Trust and Influence, at the AFOSR 2013 Spring Review. At this review, Program Officers from AFOSR Technical Divisions will present briefings that highlight basic research programs beneficial to the Air Force.
More from The Air Force Office of Scientific Research (20)
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
JMeter webinar - integration with InfluxDB and Grafana
Weinstock - Quantum Electronic Solids - Spring Review 2013
1. 1DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution19 February 2013
Integrity Service Excellence
Dr. Harold Weinstock
Program Officer
AFOSR/RTD
Air Force Research Laboratory
Quantum Electronic Solids
07 March 2013
2. 2
2013 AFOSR SPRING REVIEW
3001H PORTFOLIO OVERVIEW
NAME: Quantum Electronic Solids
BRIEF DESCRIPTION OF PORTFOLIO:
Physics and electronics at the nanoscale: superconductivity,
metamaterials and nanoelectronics - exploiting quantum phenomena
to create faster, smarter, smaller and more energy-efficient devices
SUB-AREAS IN PORTFOLIO:
Superconductivity: find more-useful materials for high magnetic
fields, microwave electronics, power reduction and distribution
Metamaterials: microwave, IR & optical sensing and signal
processing with smaller sizes and unique properties
Nanoelectronics: NTs, graphene, diamond, SiC for sensing, logic &
memory storage
Distribution A: Approved for public release; distribution is unlimited
3. 3DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
SC Power Transmission for DE
A. Dietz, Creare Inc., L. Bromberg, MIT
• Two-stage current leads with integrated heat
exchangers cooled by cycle gas from a two-stage
turbo-Brayton cryocooler
• Current lead design minimizes cold heat load and
ensures even current distribution
• Cryocooler design offers high efficiency with low
weight
• Advantages over copper cables
– 90% less weight
– 40% less power consumed
Current Lead Design System Configuration
Cryocooler Performance
4. 4
Ivan K. Schuller, UCSD
MURI Supersearch
Fast, Selective, Sensitive Scanning Method
Nb
MgB2
GdBa2CuOx
10 20 30 40 50 60 70 80 90 100
1
10
100
MFMMSsignal(arb.units)
Temperature (K)
Study of intimately mixed
superconductors DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
5. 5
Ω
Ivan K. Schuller, UCSD
MURI Supersearch
New Superconductors Discovered
Service
to Others
Phase Spread Alloys
Bulk Synthesis
• High-Pressure
• High-Temperature
Meteorites
Discoveries (#):
Borides (10), Carbides (6),
Calchogenides (4),
Silicides (2), Bismuthates(1),
Antimonides (1),
Other Intermetallics (2)
6. Empirical Search for New Superconductors
U Maryland-Iowa State-UC San Diego MURI (PI-R.L. Greene)
Development of viable solutions for the synthesis of sulfur-bearing single crystals
Xiao Lin, Sergey L. Bud’ko and Paul C. Canfield*
Have grown single crystals of mineral types: Parkerite (above, SC below 1K),
Shandite, Paracostibite, and sulfide variants of olivine (not shown and not SC).
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
7. Superconducting Flexible Wire: MgB2@CNT;
FeSe@CNT
A. Zakhidov, University of Texas at Dallas
MgB2 nanowires
Resistance drops to exact zero after RF oxygen
plasma treatment,
Resistance drops at Tc but not to zero :
needs optimization of barrier coating.
FeSe0.5Te0.5 on CNT
0 50 100 150 200
5.5
6.0
6.5
7.0
Current direction perpendicular to the CNT
Resistance(Ω)
Temperature (K)
Resistance(Ω)
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
8. 8DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
Integrated MBE – ARPES
Kyle Shen, Cornell U.
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
9. 9
Investigating the “Mother” of all High-Tc Superconductors
Kyle M. Shen, Cornell University
J.W. Harter et al., Phys. Rev. Lett. (in press)
Cu O Sr / La
Sr1-xLaxCuO2 epitaxial thin films ARPES measurements
Regions of suppressed intensity on the Fermi
surface (yellow circles) indicate presence of
strong antiferromagnetic fluctuations
0
+π
−π
ky
kx
0+π+2π
• Simple, archetypal structure of cuprates
(square, flat CuO2 sheets)
• Can be doped either with holes or
electrons (only ambipolar SC cuprate)
• Bulk single crystals do not exist (epitaxial
stabilization)
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
10. 10
Semiconducting Graphene (S-Gr)
Walt de Heer, Georgia Tech
On-off ratio > 105
Factor 104 greater than
for pure graphene FETs.
• SGr (bandgap~1eV) is graphene that is bonded to the SiC surface.
•It seamlessly connects to graphene to make atomically thin, gateable SGr-Gr junctions.
• Digital electronics is feasible; • SGr is stable at extreme temperatures;
ISD(µA)
VSD (V)
2 4 6-2-4-6 0
10-5
10-4
10-3
10-2
10-1
100
101
102
graphene
Semiconducting
graphene
AFM
Epitaxial graphene on SiC (C-face)
Gate
Drain
S DG
graphene Gr
S-Gr
Gr
EFM
Gate
Source DrainS-Gr
SiC
11. 11
Graphene on crystallized sidewall
Resistance(h/e2)
Number of passive probes
0 1 2
0
1
2
3
V
I
V
I
V
I
• 40 nm wide graphene ribbons grown
on crystallized sidewalls of trenches
etched in SiC are ballistic conductors.
• Resistances (≈h/e2=25.8 kΩ) are
essentially independent of length and
temperature.
• Touching a ribbon with a probe,
scatters electrons and (reversibly)
doubles the resistance. Touching it
with 2 probes, triples it.
Room Temp Ballistic Transport in Graphene Nano-ribbons
Walt de Heer, Georgia Tech
0 1 2 3 4 5
R(h/e2)
1
2
Probe spacing L(µm)
dL
SEM image of four nano probes
contacting graphene ribbon
R2pp(h/e2)
0.8
1.0
1.4
1.6
1.2
0 10 20
L (µm)
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
12. 12
Our work (CVD GNR)
Exfoliated GNR
Thick CVD GMR
GNR from CNTs
101
102
103
104
105
107
108
109
JBD
(A/cm2
)
ρ(µΩ-cm)
Nanoscale Interconnects from CVD Graphene
Eric Pop, UIUC
• First study of large-scale graphene
nanoribbon (GNR) interconnects from
graphene grown by chemical vapor
deposition (CVD)
• Examined temperature range 2-900 K
tox
tsi
W (GNR)W (wide graphene)
• Achieved record current densities >109
A/cm2 in small GNRs due to improved heat
dissipation through the substrate and
contacts (see bottom left).
• Thermal engineering of the substrate and
its interface with graphene can further
improve the performance of GNRs
See: A. Behnam, A. S. Lyons, M-H. Bae, E. K. Chow, S. Islam,
C. H. Neumann, E. Pop, Nano. Lett. 12, 4424 (2012).
300 µm
S D
50 nm
1 µm
5.0−
ραBDJ
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
13. 13
Questions: Stress, Performance,
Fabrication
• Back gate (gold-palladium alloy), PEN
substrate
• Hafnium-oxide gate dielectric
• CVD graphene transferred over gates
20 μm
Source
Gate
Drain Drain
x
y
Graphene Yields High Performance Flexible FETs
Ken Shepard and Jim Hone, Columbia University
Performance
• fT, fmax of 10.7 GHz, 3.7 GHz w/o de-embedding
• fT/fmax=0.35, entire strain range.
• Mobility, output resistance unchanged by strain;
gm ~1/2 its 0% strain value at ~2% strain
Inherent flexibility of monolayer graphene, and its environmental inertness, make it a
natural candidate for flexible electronics. GHz frequency response can be obtained
with little sensitivity to strain, a major advance in flex-FET speed.
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
14. 14
Nanoscale NMR with a Single Electron Spin Sensor
D. D. Awschalom, University of California – Santa Barbara
Science, in press (2012)
• Room temperature detection of external protons
• No magnetic field gradients needed
• 13 nm3 detection volume PMMA ~8nT sensitivity
• Collaboration with IBM Research Division
T2 ~ 600 µs
20 nm from surface
isotopically pure
1H NMR
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
15. 15
Spontaneous Hyper-Emission
Eli Yablonovitch & Ming Wu, UC Berkeley
hν
λ
2
molecule
M
substrate
Au antenna
Au antennaInGaAs quantum well
Antenna slot defined by quantum well
thickness!
Using an optical antenna, Spontaneous Emission Rate can be ~0.1×ωo !!!
Faster than stimulated emission, but antenna slot must be very narrow.
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
16. 16
0
200
400
600
800
1000
1200
1400
1600
1800
2000
1200 1300 1400 1500 1600
Counts
Wavelength (nm)
Emission Parallel
to Antenna
400nm Antenna
AuAu
150nm
InGaAsP
Pump
Polarization
no antenna
~35X
no antenna
~35X Spontaneous Emission Enhancement
Single Arm Antenna
Eli Yablonovitch & Ming Wu, UC Berkeley
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
17. Protecting Superconducting Antennas with
Metamaterial Cloaks
Frank Trang, Horst Rogalla, Zoya Popovic, University of Colorado, Boulder
Transmitter
Cloak
HTS Receiver
1cm
4.58cm
≈5200
≈42000
88K
One of 5 layers of the proposed
cloak constructed of SRRs.
Proposed cloak geometry HTS Split Ring Resonator (SRR) and its temperature
dependent quality factor Q
Simulated EM-field: the far field
is restored behind the cloak
Parameter extraction of µ and ε
Transmitter
Receiver
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
18. 18
Metamaterials for Computational Imaging
D. R. Smith, Duke University
Comparison of (A) conventional, (B) single pixel, and (C) metamaterial imagers.
In the metamaterial imager, a set of randomized modes sequentially samples a
scene. Scene data can subsequently be reconstructed using sparse algorithms.
The imager shown makes use of frequency-diversity to sample an image: no active
tuning or mechanical scanning is necessary—just a frequency sweep.
J. Hunt et al., Science, in pressDISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
19. 19
Approaches to Large Area Absorber Materials
David R. Smith, Duke University
Film-coupled nanocubes can produce strong
absorption resonances that can create surfaces
with controlled reflectance. The advantage is that
perfect absorbing materials with large surface
area can be fabricated cheaply and easily.
A. Moreau et al., Nature (2012)
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
20. 0 100 200 300
T (K)
0
0.2
0.4
0.6
0.8
zT
Bi89.5Sb10.5
Bi94Sb6
Bi93Sb7 + 0.1% K
~ 50%
Cryogenic Peltier Cooling: record zT
J. P. Heremans Ohio State; D. T. Morelli, Michigan State
κ
σ2
STzT ≡
0
0.1
0.2
0.3
50 150 250 350
zT
T(K)
x=0
x=0.5
x=1 (1)
x=1 (2)
CePd2.655Pt.3
(1)
Record Thermoelectric Figure of Merit below 150 K
n-type material: Bi93Sb7:K p-type material: CePd2Pt
CePd3-xPtx
E
DOS
E
DOS
Principle:
K is a
resonant level
in BiSb
Principle:
Tune EF in the
Ce - 4f levelBiSb
band
K-level
Ce 4f
level
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution
21. 21
Dirac cones in BiSb and Electron Cloaking
M. S. Dresselhaus and Gang Chen, MIT
Dirac dispersion relations in BiSb alloy thin
films
Modulation doping with impurities in
core-shell nanoparticles
Nanoparticles invisible to free electrons
DISTRIBUTION STATEMENT A – Unclassified, Unlimited Distribution