Researchers have developed a new technique using Kelvin probe scanning and an atomic force microscope that can detect defects below the surface of nanocomposites. This technique maps electrical charge below the surface and can detect nanostructures like carbon nanotubes embedded in a polymer matrix up to 400 nanometers deep. It allows quality control at the nanoscale by identifying clumping or uneven distribution of nanostructures that can hinder performance. The collaboration between Purdue University and Universidad de los Andes researchers was able to explore the depth detection limits of characterization techniques based on atomic force microscopy.
the branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially the manipulation of individual atoms and molecules.
the branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially the manipulation of individual atoms and molecules.
A nanometer is a billionth of a meter
It's difficult to imagine anything so small, but think of
something only 1/80,000 the width of a human hair
Ten hydrogen atoms could be laid side-by- side in a single nanometer.
Nanotechnology is the creation of useful materials, devices, and systems through the manipulation of matter on this miniscule scale
There are many interesting nanodevices being developed that have a potential to improve cancer detection, diagnosis, and treatment
Nanotechnologies promise new solutions for several applications in biomedical, industrial
and military fields. At nano-scale, a nano-machine can be considered as the most basic functional
unit. Nano-machines are tiny components consisting of an arranged set of molecules,
which are able to perform very simple tasks. Nanonetworks.
The main aim deals with the eradication of cancer cells by providing a steady, possible method of destroying and curing the cancer in an efficient and safe way so that healthy cells are not affected in any manner. This technology also focuses on a main idea that the patient is not affected by cancer again. The purpose of using the RF signal is to save normal cells.
1. Done by: Dr. Mohamad Ghazi Kassem
2. What is Nanotechnology An engineered DNA strandtiny motor pRNA Semiconducting metal junction formed by two carbon nanotubes Nanotechnology is the creation of functional materials, devices and systems, through the understanding and control of matter at dimensions in the nanometer scale length (1-100 nm), where new functionalities and properties of matter are observed and harnessed for a broad range of applications.
3. What is Nanoscale Fullerenes C60 22 cm 12,756 Km 1.27 × 107 m 0.22 m 10 millions times smaller 0.7 nm 0.7 × 10-9 m 1 billion times smaller
4. What Are Gold Nanoparticles? • Gold nanoparticles (‘nanogold’) occur as clusters of gold atoms up to 100nm in diameter. Gold nanoparticle • Nanogold has unusual visible properties because the particles are small enough to scatter visible light. - in contrast, mass gold reflects light. 5nm gold clusters
5. • Gold nanoparticles appear yellow to deep red to in solution. - colour depends on size of nanoparticles • The distance between particles also affects colour - surface plasmon resonance is the term used by nanotechnologists to describe this effect.
6. Why Gold Nanoparticles Cancer is a difficult disease to treat, contain, and identify. There are many different ways for treating cancer such as surgery, chemotherapy, radiation and many others. These methods are effective if the cancer tumor is caught soon enough. However, these treatments are not effective enough because they do not only target the affected cells, they also affect healthy cells. But • Gold Nanoparticles are non toxic • With Gold Nanoparticles we can detecting cancer cells and even destroy them without affect healthy cells.
7. Mostafa A. El-Sayed Julius Brown Chair and Regents Professor; Director, Laser Dynamics Laboratory “Gold nanoparticles are very good at scattering and absorbing light,” said Mostafa El-Sayed, director of the Laser Dyanamics Laboratory and chemistry professor at Georgia Tech. “We wanted to see if we could harness that scattering property in a living cell to make cancer detection easier. So far, the results are extremely promising.”
8. Gold Nanoparticle Tumor Detection The common strategy to detect the tumor is the functionalization of the nanoparticle with an antibody specific to the tumor antigens, and then detect the nanoparticle by some spectroscopic technique B. Tumor photograph Imaging with gold nanoparticles as contrast agent
9. Many cancer cells have a protein, known as Epidermal Growth Factor Receptor (EFGR), all over their surface, while healthy cells typically do not express the protein as strongly. By conjugating, or binding, the gold nanoparticles to an antibody for EFGR, suitably named antiEFGR, researchers were able to get the nanoparticles to attach themselves to the cancer cells. Electrostatically + + + + - - - + + + - + -+ - - + + + + Covalently S S S S S S S S
10. Gold Nanoparticles Nanoshells
Nanorobotics,
Application of Nanorobotics,
Parts of Nanorobotics, challenges
cons of nanorobots
nanorobot drug delivery
nanorobotics in cancer
nanorobot in blood clot
nanorobotics in kidney stone
use of nanorobots in cell surgery
nanotechnology in gout
Electronics and computational techniques are increasingly being used to analyze biological cells to diagnose diseases and develop methodologies to cure diseases inside the body. One such technology is ‘Nanotechnology’. The paper emphasizes on the best and effective utilization of Nanotechnology in the treatment of cancer. The design of nano device is based on the constant study of cancer cells and nanotechnology.
The nano device is injected to the patient which can travel through blood vessel, identify and destroy cancer cells. The system is fully automated whereby the device manages to move to the affected cells through certain algebraic calculations automatically wherever it might be placed. This would be loaded into a simple microprocessor like 8085 and can be embedded along with the nano device for automatic discovery of cancer cells. Manual guidance and monitoring is done to control the device explicitly, further more command signals are activated automatically or manually to destroy the affected cells through RF signals. The theme is based on the fact that the cancer cells get destroyed on exposure to RF signals, due to high heat generation.
In our paper we design a device that contains sensors, transceivers, motors and a processor which are made up of biodegradable compound. No more destruction of healthy cells due to harmful toxins and radiations generated through chemotherapy and radiation therapy. Electronics and computational techniques are increasingly being used to analyze biological cells to diagnose diseases, and develop methodologies to cure the diseases inside the human body.
The main aim of this paper deals with the eradication of cancer cells by providing a steady, possible method of destroying and curing the cancer in an efficient and safe way so that healthy cells are not affected in any manner. This technology also focuses on a main idea that the patient is not affected by cancer again. The purpose of using the RF signal is to save normal cells.
It is the branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially the manipulation of individual atoms and molecules.
What’s New Nanocat Poster Session Student Topic List St.docxphilipnelson29183
What’s New Nanocat? Poster Session: Student Topic List
Stain Resistant Clothes
Manufacturers are embedding fine-spun fibers into fabric to confer stain resistance on
khaki pants and other products. These “nanowhiskers” act like peach fuzz and create a
cushion of air around the fabric so that liquids bead up and roll off. Each nanowhisker is
only ten nanometers long, made of a few atoms of carbon. To attach these whiskers to
cotton, the cotton is immersed in a tank of water full of billions of nanowhiskers. Next, as
the fabric is heated and water evaporates, the nanowhiskers form a chemical bond with
cotton fibers, attaching themselves permanently. The whiskers are so tiny that if a cotton
fiber were the size of a tree trunk, the whiskers would look like fuzz on its bark. Nano-
resistant fabric created by NanoTex is already available in clothing available at stores like
Eddie Bauer, The Gap, and Old Navy. This innovation will impact not only khaki wearers,
but also dry cleaners who will find their business declining, and detergent makers who
will find less of their project moving off the shelf. Nanoparticles (e.g., of silver) could also
be introduced to destroy microbes and create odor-resistant cloths.
More information:
• Fancy pants:
http://www.sciencentral.com/articles/view.php3?article_id=218391840&cat=3_5
• Nano fiber finishing: http://www.textileinfo.com/en/tech/nanotex/page02.html
• Odor-resistant products: http://www.physorg.com/news1373.html
Paint That Resists Chipping
On cars, special nanopaints that hold up better to weathering, are more resistant to
chipping and have richer and brighter colors than traditional pigments. The paints contain
tiny ceramic particles added to a liquid clearcoat. The particles link and create a very
dense and smoothly structured network that provides a protective layer.
More information:
• Mercedes-Benz Nano Paint (3 page article on benefits, material, and paint
process):
http://www.auto123.com/en/info/news/news,view.spy?artid=21942&pg=1
• Nanotechnology improves paint gloss:
http://www.canadiandriver.com/articles/jk/040407.htm
• Mercedes tougher, shinier nanopaint:
http://www.supanet.com/motoring/testdrives/news/40923/
Paint That Cleans the Air
Chinese scientists have announced that they have even invented nanotech-based coating
material that acts as a permanent air purifier. If the coating proves to be effective at air
cleaning, it will be gradually used on buildings across Shanghai in order to improve the
city's air quality. The core of the material is a titanic-oxide-based compound that
comprises particles at nanoscale achieved by advanced nanotechnology. Exposed under
5-S3
sunlight, the substance can automatically decompose the major ingredients that cause air
pollution such as formaldehyde and nitride.
More information:
• Paint to help clean and purify the air:
http://english.eastday.com/eastday/englishedition/metro/userobject1ai710823.html.
A nanometer is a billionth of a meter
It's difficult to imagine anything so small, but think of
something only 1/80,000 the width of a human hair
Ten hydrogen atoms could be laid side-by- side in a single nanometer.
Nanotechnology is the creation of useful materials, devices, and systems through the manipulation of matter on this miniscule scale
There are many interesting nanodevices being developed that have a potential to improve cancer detection, diagnosis, and treatment
Nanotechnologies promise new solutions for several applications in biomedical, industrial
and military fields. At nano-scale, a nano-machine can be considered as the most basic functional
unit. Nano-machines are tiny components consisting of an arranged set of molecules,
which are able to perform very simple tasks. Nanonetworks.
The main aim deals with the eradication of cancer cells by providing a steady, possible method of destroying and curing the cancer in an efficient and safe way so that healthy cells are not affected in any manner. This technology also focuses on a main idea that the patient is not affected by cancer again. The purpose of using the RF signal is to save normal cells.
1. Done by: Dr. Mohamad Ghazi Kassem
2. What is Nanotechnology An engineered DNA strandtiny motor pRNA Semiconducting metal junction formed by two carbon nanotubes Nanotechnology is the creation of functional materials, devices and systems, through the understanding and control of matter at dimensions in the nanometer scale length (1-100 nm), where new functionalities and properties of matter are observed and harnessed for a broad range of applications.
3. What is Nanoscale Fullerenes C60 22 cm 12,756 Km 1.27 × 107 m 0.22 m 10 millions times smaller 0.7 nm 0.7 × 10-9 m 1 billion times smaller
4. What Are Gold Nanoparticles? • Gold nanoparticles (‘nanogold’) occur as clusters of gold atoms up to 100nm in diameter. Gold nanoparticle • Nanogold has unusual visible properties because the particles are small enough to scatter visible light. - in contrast, mass gold reflects light. 5nm gold clusters
5. • Gold nanoparticles appear yellow to deep red to in solution. - colour depends on size of nanoparticles • The distance between particles also affects colour - surface plasmon resonance is the term used by nanotechnologists to describe this effect.
6. Why Gold Nanoparticles Cancer is a difficult disease to treat, contain, and identify. There are many different ways for treating cancer such as surgery, chemotherapy, radiation and many others. These methods are effective if the cancer tumor is caught soon enough. However, these treatments are not effective enough because they do not only target the affected cells, they also affect healthy cells. But • Gold Nanoparticles are non toxic • With Gold Nanoparticles we can detecting cancer cells and even destroy them without affect healthy cells.
7. Mostafa A. El-Sayed Julius Brown Chair and Regents Professor; Director, Laser Dynamics Laboratory “Gold nanoparticles are very good at scattering and absorbing light,” said Mostafa El-Sayed, director of the Laser Dyanamics Laboratory and chemistry professor at Georgia Tech. “We wanted to see if we could harness that scattering property in a living cell to make cancer detection easier. So far, the results are extremely promising.”
8. Gold Nanoparticle Tumor Detection The common strategy to detect the tumor is the functionalization of the nanoparticle with an antibody specific to the tumor antigens, and then detect the nanoparticle by some spectroscopic technique B. Tumor photograph Imaging with gold nanoparticles as contrast agent
9. Many cancer cells have a protein, known as Epidermal Growth Factor Receptor (EFGR), all over their surface, while healthy cells typically do not express the protein as strongly. By conjugating, or binding, the gold nanoparticles to an antibody for EFGR, suitably named antiEFGR, researchers were able to get the nanoparticles to attach themselves to the cancer cells. Electrostatically + + + + - - - + + + - + -+ - - + + + + Covalently S S S S S S S S
10. Gold Nanoparticles Nanoshells
Nanorobotics,
Application of Nanorobotics,
Parts of Nanorobotics, challenges
cons of nanorobots
nanorobot drug delivery
nanorobotics in cancer
nanorobot in blood clot
nanorobotics in kidney stone
use of nanorobots in cell surgery
nanotechnology in gout
Electronics and computational techniques are increasingly being used to analyze biological cells to diagnose diseases and develop methodologies to cure diseases inside the body. One such technology is ‘Nanotechnology’. The paper emphasizes on the best and effective utilization of Nanotechnology in the treatment of cancer. The design of nano device is based on the constant study of cancer cells and nanotechnology.
The nano device is injected to the patient which can travel through blood vessel, identify and destroy cancer cells. The system is fully automated whereby the device manages to move to the affected cells through certain algebraic calculations automatically wherever it might be placed. This would be loaded into a simple microprocessor like 8085 and can be embedded along with the nano device for automatic discovery of cancer cells. Manual guidance and monitoring is done to control the device explicitly, further more command signals are activated automatically or manually to destroy the affected cells through RF signals. The theme is based on the fact that the cancer cells get destroyed on exposure to RF signals, due to high heat generation.
In our paper we design a device that contains sensors, transceivers, motors and a processor which are made up of biodegradable compound. No more destruction of healthy cells due to harmful toxins and radiations generated through chemotherapy and radiation therapy. Electronics and computational techniques are increasingly being used to analyze biological cells to diagnose diseases, and develop methodologies to cure the diseases inside the human body.
The main aim of this paper deals with the eradication of cancer cells by providing a steady, possible method of destroying and curing the cancer in an efficient and safe way so that healthy cells are not affected in any manner. This technology also focuses on a main idea that the patient is not affected by cancer again. The purpose of using the RF signal is to save normal cells.
It is the branch of technology that deals with dimensions and tolerances of less than 100 nanometres, especially the manipulation of individual atoms and molecules.
What’s New Nanocat Poster Session Student Topic List St.docxphilipnelson29183
What’s New Nanocat? Poster Session: Student Topic List
Stain Resistant Clothes
Manufacturers are embedding fine-spun fibers into fabric to confer stain resistance on
khaki pants and other products. These “nanowhiskers” act like peach fuzz and create a
cushion of air around the fabric so that liquids bead up and roll off. Each nanowhisker is
only ten nanometers long, made of a few atoms of carbon. To attach these whiskers to
cotton, the cotton is immersed in a tank of water full of billions of nanowhiskers. Next, as
the fabric is heated and water evaporates, the nanowhiskers form a chemical bond with
cotton fibers, attaching themselves permanently. The whiskers are so tiny that if a cotton
fiber were the size of a tree trunk, the whiskers would look like fuzz on its bark. Nano-
resistant fabric created by NanoTex is already available in clothing available at stores like
Eddie Bauer, The Gap, and Old Navy. This innovation will impact not only khaki wearers,
but also dry cleaners who will find their business declining, and detergent makers who
will find less of their project moving off the shelf. Nanoparticles (e.g., of silver) could also
be introduced to destroy microbes and create odor-resistant cloths.
More information:
• Fancy pants:
http://www.sciencentral.com/articles/view.php3?article_id=218391840&cat=3_5
• Nano fiber finishing: http://www.textileinfo.com/en/tech/nanotex/page02.html
• Odor-resistant products: http://www.physorg.com/news1373.html
Paint That Resists Chipping
On cars, special nanopaints that hold up better to weathering, are more resistant to
chipping and have richer and brighter colors than traditional pigments. The paints contain
tiny ceramic particles added to a liquid clearcoat. The particles link and create a very
dense and smoothly structured network that provides a protective layer.
More information:
• Mercedes-Benz Nano Paint (3 page article on benefits, material, and paint
process):
http://www.auto123.com/en/info/news/news,view.spy?artid=21942&pg=1
• Nanotechnology improves paint gloss:
http://www.canadiandriver.com/articles/jk/040407.htm
• Mercedes tougher, shinier nanopaint:
http://www.supanet.com/motoring/testdrives/news/40923/
Paint That Cleans the Air
Chinese scientists have announced that they have even invented nanotech-based coating
material that acts as a permanent air purifier. If the coating proves to be effective at air
cleaning, it will be gradually used on buildings across Shanghai in order to improve the
city's air quality. The core of the material is a titanic-oxide-based compound that
comprises particles at nanoscale achieved by advanced nanotechnology. Exposed under
5-S3
sunlight, the substance can automatically decompose the major ingredients that cause air
pollution such as formaldehyde and nitride.
More information:
• Paint to help clean and purify the air:
http://english.eastday.com/eastday/englishedition/metro/userobject1ai710823.html.
Nanotechnology PPT
Presented by Kapil Kumar, Jayesh Kumar, Manu Kumar , Madhusudan Kaushik
Mechnical Engineering , 3rd Sem. (2020-21)
Galgotia's College of Engineering and Technology, Greater Noida, UP
Nano-technology (Biology, Chemistry, and Physics applied)Muhammad Yossi
Nano-science involves research to discover new behaviors and properties of materials with dimensions at the nanoscale which ranges roughly from 1 to 100 nanometers(nm). Nanotechnology is the way discoveries made at the nanoscale are put to work. Nanotechnology is more than throwing together a batch of nanoscale materials - it requires the ability to manipulate and control those materials in a useful way. This slides contain a bit of History of Nanotechnology, The Application of Nanotechnology from the Previouses Centuries, The Applications of Nanotechnology in the Next Generation, The Advantages and The Disadvantages.
What is Nanotechnology? A Technology which will change the world.FlactuateTech
Nanotechnology is a field of research and innovation that involves building 'objects' - frequency, building materials, and devices - on the scale of atoms and molecules. A nanometer is a billionth of a millionth: one ten times the diameter of a hydrogen atom. The diameter of human hair, on average, is about 80,000 nanometers.On such scales, the general rules of physics and chemistry no longer apply. For example, the properties of building materials, such as their color, strength, performance, and performance, can vary greatly between nanoscale and macro. Carbon 'nanotubes' are about 100 times stronger than steel but six times lighter.
Nanotechnology is a field that deals with things at molecular level that is as tiny as 10^(-9) of units and finds very useful implementations from cleaning clothes to curing the "incurable"--CANCER.
Evolution of nanotechnology in electronics (seminar report) -codewithgauriGaurav Pandey
Nanotechnology is engineering and manufacturing at the molecular scale, thereby taking more advantage of the unique properties that exist at that scale.
A Nanometre is a unit of length in the metric system, equal to one billionth of a metre(10-9).Can be used across all the other science fields, such as chemistry, biology, physics, materials science, and engineering.
www.blog.codewithgauri.tech
New technique could bring quality-control tool for nanocomposites
1. New technique could bring quality-control tool for
nanocomposites
Layered nanocomposites containing tiny structures mixed into a polymer matrix are gaining
commercial use, but their complex nature can hide defects that affect performance.
Now researchers have developed a system capable of detecting such defects using a "Kelvin probe"
scanning method with an atomic force microscope. The ability to look below the surface of
nanocomposites represents a potential new quality-control tool for industry.
"This is important for anything having polymers that contain small structures, including
photovoltaics for solar cells, organic conducting devices for flexible electronics, battery materials
and so on," said Arvind Raman, the Robert V. Adams Professor of Mechanical Engineering and
associate dean for the Global Engineering Program at Purdue University.
Nanocomposites are layered materials containing various structures such as carbon nanotubes,
ultrathin sheets of carbon called graphene, gold nanoparticles and graphite nanofibers, mixed into a
polymer matrix.
"We need a tool that permits us to see how these nano-objects are distributed within a polymer
matrix," Raman said. "You may look at the whole film and say, 'Well, it isn't performing as
advertised,' but you don't know why. This allows you to see under the surface in a non-destructive
manner."
Findings appeared in the February issue of ACS Nano, published by the American Chemical Society.
The paper was authored by doctoral student Octavio Alejandro Castañeda-Uribe, from Universidad
de los Andes (Uniandes) in Colombia; Ronald Reifenberger, a Purdue professor of physics; Raman;
and Alba Avila, an associate professor in the Electrical and Electronic Department at Uniandes who
is affiliated with the microelectronics center (CMUA) there.
The Kelvin probe method has been used to map electrical charge on the surfaces of materials.
However, now researchers have discovered that the method can be used to look below the surface,
detecting three-dimensional networks of nanostructures embedded deep inside the polymer matrix.
"This allows us to correlate these networks with the multifunctional properties of nanocomposites,"
Avila said.
An atomic force microscope uses a tiny vibrating probe called a cantilever to yield information about
materials and surfaces on the scale of nanometers, or billionths of a meter. The instrument enables
scientists to "see" objects far smaller than possible using light microscopes. In Kelvin probe
scanning an alternating current is applied to the sample being studied, causing the probe to vibrate
at a certain frequency, and then a direct current is applied to the probe, partially nullifying the
effect of the alternating current.
"You nullify the main frequency, but it turns out there is a second frequency that is not nulled,"
Raman said. "You kind of mute the main signal, but there is a higher tone that remains in the
cantilever, and that higher tone is very sensitive to what's underneath the surface."
The new findings identify precisely how deeply and through how many layers the method can probe
2. into a material. Researchers developed computational methods and an experimental technique
making the tool possible.
"If the nanocomposite doesn't work well, you have to be able to look inside," Raman said. "You have
to do quality control at the nanoscale."
Nanotubes and other nanostructures should ideally be well distributed throughout the
nanocomposite, forming a continuous network. However, the structures tend to clump together
instead, hindering performance.
"So, now we can see where they are clumping together and where they are not because you can see
below the surface without destroying the sample," he said.
The method also allows researchers to determine the orientation, connectivity and size distribution,
or the particle-to-particle variation of size, which is important for quality control.
Images created with the method show wormlike carbon nanotubes below the surface of a composite.
The researchers systematically added layers and showed that the method is capable of detecting
structures down to a depth of about 400 nanometers.
Purdue worked with researchers at Uniandes in Bogota? through the Colombia-Purdue Institute,
which fosters partnerships among Purdue and institutions in Colombia, including universities,
companies, government ministries and nongovernmental organizations.
"It's a good example of how you bring international teams together to get something really good
accomplished," Raman said.
Uniandes researchers were involved in processing the nanocomposite films and also developing the
experimental technique. Nanocomposite film processing and development of the atomic force
microscope experimental technique were carried out by a team at Purdue's Birck Nanotechnology
Center. The computations were carried out at Uniandes.
"This collaboration made it possible to provide research training and access to facilities at both
universities for advanced research focused on exploring depth-detection limits of characterization
techniques based on atomic force microscopy," Avila said. "These limits are needed to confidently
detect, characterize, and quantify the location of the nanomaterial networks within a polymer
matrix, allowing 3-D image reconstruction of nanocomposites and a more reliable prediction,
estimation and correlation of the properties of nanocomposites."
Explore further: New nanocomposites for aerospace and automotive industries
More information: "Depth-Sensitive Subsurface Imaging of Polymer Nanocomposites Using Second
Harmonic Kelvin Probe Force Microscopy." ACS Nano, 2015, 9 (3), pp 2938-2947 DOI:
10.1021/nn507019c
Journal reference: ACS Nano
Provided by Purdue University
http://phys.org/news/2015-03-technique-quality-control-tool-nanocomposites.html