We have fabricated also Li-ion batteries based on structurally resilient carbon nanotube-based electrodes that have survived thousands of flexing cycles.
Nagoya University and the JST-ERATO Itami Molecular Nanocarbon Project have developed a bulky iridium catalyst that selectively directs a boron moiety to the opposite side of mono-substituted benzene derivatives.
#Carbon nanotube sensor detects spoiled meat MIT chemists have devised an inexpensive, portable sensor that can detect gases emitted by rotting meat,
who is the senior author of a paper describing the new sensor this week in the journal Angewandte Chemie("Single-Walled carbon nanotube/Metalloporphyrin Composites for the Chemiresistive Detection of Amines and Meat Spoilage").
The sensor is similar to other carbon nanotube devices that Swager's lab has developed in recent years,
it increases the electrical resistance of the carbon nanotube, which can be measured easily.""We use these porphyrins to fabricate a very simple device where we apply a potential across the device
and could be incorporated into a wireless platform Swager's lab recently developed that allows a regular smartphone to read output from carbon nanotube sensors such as this one.
next-generation health monitoring devices such as electronic stick-on tattoos (see for instance"wearing single-walled carbon nanotube electronics on your skin",a"temporary tattoo to monitor glucose levels"or"graphene nanosensor tattoo
#Taking aircraft manufacturing out of the oven Aerospace engineers at MIT have developed now a carbon nanotube (CNT) film that can heat
"Wardle says the carbon nanotube film is also incredibly lightweight: After it has fused the underlying polymer layers,
Carbon nanotube deicerswardle and his colleagues have experimented with CNT films in recent years, mainly for deicing airplane wings.
If the CNT film could generate heat, why not use it to make the composite itself?
The researchers manufactured a CNT film about the size of a Post-it note, and placed the film over a square of Cycom 5320-1. They connected electrodes to the film,
or cross-link, the polymer and carbon fiber layers, finding that the CNT film used one-hundredth the electricity required for traditional oven-based methods to cure the composite.
Wardle says the results pushed the group to test the CNT film further: As different composites require different temperatures in order to fuse,
whether the CNT film could, quite literally, take the heat.""At some point, heaters fry out,
"Gregory Odegard, a professor of computational mechanics at Michigan Technological University, says the group's carbon nanotube film may go toward improving the quality and efficiency of fabrication processes for large composites, such as wings on commercial aircraft.
more conductive carbon nanotube films"It's a simple process and can create a lightweight CNT film,
or'bucky paper,'that is a meter wide and twice as strong as previous such films--it's even stronger than CNT FIBERS,
"says Yuntian Zhu, Distinguished Professor of Materials science and engineering at NC State and corresponding author of a paper describing the work.
The researchers begin by growing the CNTS on a conventional substrate in a closely packed array.
The CNTS are tangled together, so when researchers pull on one end of the array the CNTS form a continuous ribbon that is only nanometers thick.
This ribbon is attached to a spool which begins winding the ribbon up. As the spool pulls, the CNT ribbon is dragged between two surgical blades.
While the blades appear straight to the naked eye, they actually have micrometer-scale fissures on their cutting edge.
These fissures create a kind of"microcomb"that pulls the CNTS into alignment--just as a regular comb sorts through tangled hair.
When the ribbon of aligned CNTS is being wound onto the spool, the researchers apply an alcohol solution.
This pulls the CNTS closer together, strengthening the bonds between CNTS. The CNT ribbon wraps around itself as it winds around the spool
creating a layered film of pure CNTS. Researchers can control the thickness of the film by controlling the number of layers.
The CNT films made using the microcombing technique had more than twice the tensile strength of the uncombed CNT films--greater than 3 gigapascals for the microcombed material,
versus less than 1. 5 gigapascals for the uncombed material. The microcombed CNT film also had 80 percent higher electrical conductivity than the uncombed film."
"This is a significant advance, but we want to find ways to make CNT alignment even straighter,
"Zhu says.""It's still not perfect.""In addition, the technique would theoretically be easy to scale up for large-scale production.
The pressure sensors are made of a carbon nanotube-elastomer composite shaped into tiny pyramidal structures that are coated onto a surface.
#icrocombingcreates Stronger, More Conductive Carbon nanotube Films Researchers from North carolina State university and China Suzhou Institute of Nanoscience and Nano-Biotics have developed an inexpensive technique called icrocombingto align carbon nanotubes (CNTS),
pure CNT films that are stronger than any previous such films. The technique also improves the electrical conductivity that makes these films attractive for use in electronic
and aerospace applications. t a simple process and can create a lightweight CNT film, or ucky paper, that is a meter wide and twice as strong as previous such films it even stronger than CNT FIBERS,
says Yuntian Zhu, Distinguished Professor of Materials science and engineering at NC State and corresponding author of a paper describing the work.
The researchers begin by growing the CNTS on a conventional substrate in a closely packed array.
The CNTS are tangled together, so when researchers pull on one end of the array the CNTS form a continuous ribbon that is only nanometers thick.
This ribbon is attached to a spool, which begins winding the ribbon up. As the spool pulls, the CNT ribbon is dragged between two surgical blades.
While the blades appear straight to the naked eye they actually have micrometer-scale fissures on their cutting edge.
These fissures create a kind of icrocombthat pulls the CNTS into alignment just as a regular comb sorts through tangled hair.
When the ribbon of aligned CNTS is being wound onto the spool, the researchers apply an alcohol solution.
This pulls the CNTS closer together, strengthening the bonds between CNTS. The CNT ribbon wraps around itself as it winds around the spool,
creating a layered film of pure CNTS. Researchers can control the thickness of the film by controlling the number of layers.
The CNT films made using the microcombing technique had more than twice the tensile strength of the uncombed CNT films greater than 3 gigapascals for the microcombed material
versus less than 1. 5 gigapascals for the uncombed material. The microcombed CNT film also had 80 percent higher electrical conductivity than the uncombed film. his is a significant advance,
but we want to find ways to make CNT alignment even straighter, Zhu says. t still not perfect. n addition,
the technique would theoretically be easy to scale up for large-scale production. We like to find an industry partner to help us scale this up
enough to drive electrons out of the carbon nanotube antennas when they are excited by light. In operation, oscillating waves of light pass through the transparent calcium-aluminum electrode
Nanocarbon architectures derived from biological materials such as mushrooms can be considered a green and sustainable alternative to graphite-based anodes,
Electronics based on carbon especially carbon nanotubes (CNTS) are emerging as successors to silicon for making semiconductor materials.
and optimization of the device which is based on a phosphor screen and single-walled carbon nanotubes as electrodes in a diode structure.
They assembled the device from a mixture liquid containing highly crystalline single-walled carbon nanotubes dispersed in an organic solvent mixed with a soap-like chemical known as a surfactant.
We have found that a cathode with highly crystalline single-walled carbon nanotubes and an anode with the improved phosphor screen in our diode structure obtained no flicker field emission current and good brightness homogeneity Shimoi said.
Highly crystalline single-walled carbon nanotubes (HCSWCNT) have nearly zero defects in the carbon network on the surface Shimoi explained.
The resistance of cathode electrode with highly crystalline single-walled carbon nanotube is very low. Thus the new flat-panel device has compared smaller energy loss with other current lighting devices
Overall, niobium-based supercapacitors can store up to five times as much power in a given volume as carbon nanotube versions.
but its conductivity increases. e make the inelastic carbon nanotube sheaths of our sheath-core fibers super stretchable by modulating large buckles with small buckles,
and then another carbon nanotube sheath to create strain sensors and artificial muscles. In this setup, the buckled nanotube sheets act as electrodes
The only exotic component is the carbon nanotube aerogel sheet used for the fiber sheath
#The First White Laser Scientists and engineers at Arizona State university, in Tempe, have created the first lasers that can shine light over the full spectrum of visible colors.
#Carbon nanotube-Based Water Desalination and Purification Technology Awarded Patent Mitra's new carbon nanotube immobilized membrane (CNIM) is an energy-efficient device designed to filter higher concentrations of salt than is currently feasible through reverse osmosis, one of the standard
Wrapping carbon nanotube sheets into fibers In a study published in the July 24 issue of the journal Science,
senior author of the paper and director of the Alan G. Macdiarmid Nanotech Institute at UT Dallas. One key to the performance of the new conducting elastic fibers is the introduction of buckling into the carbon nanotube
the Robert A. Welch Distinguished Chair in Chemistry at UT Dallas. e make the inelastic carbon nanotube sheaths of our sheath-core fibers super stretchable by modulating large buckles with small buckles,
Radical electronic and mechanical devices possible By adding a thin overcoat of rubber to the sheath-core fibers and then another carbon nanotube sheath
she said. he only exotic component is the carbon nanotube aerogel sheet used for the fiber sheath. o
Grafysorber embodies the nanocarbon paradox Giulio Cesareo, Directa Plus President and CEO, commented in fact with a nanocarbon material we are able to cut down part of damages caused by hydrocarbons,
derived from carbon itself. Moreover, our product, once exhausted after depuration of water, finishes positively its life cycle inside the asphalt and bitumen, introducing new properties as thermal conductivity and mechanical reinforcement.
2015'Microcombing'creates stronger, more conductive carbon nanotube films May 5th, 2015nanomedicine Effective Nano-Micelles Designed in Iran to Treat Cancer May 20th,
Rice-led experiments demonstrate solid-state carbon nanotube'templates'June 15th, 2015materials/Metamaterials Designer electronics out of the printer:
senior author of the paper and director of the Alan G. Macdiarmid Nanotech Institute at UT Dallas. One key to the performance of the new conducting elastic fibers is the introduction of buckling into the carbon nanotube
the Robert A. Welch Distinguished Chair in Chemistry at UT Dallas."We make the inelastic carbon nanotube sheaths of our sheath-core fibers super stretchable by modulating large buckles with small buckles,
"By adding a thin overcoat of rubber to the sheath-core fibers and then another carbon nanotube sheath,
"The only exotic component is the carbon nanotube aerogel sheet used for the fiber sheath.""Last year, UT Dallas licensed to Lintec of America a process Baughman's team developed to transform carbon nanotubes into large-scale structures, such as sheets.
to manufacture carbon nanotube aerogel sheets for diverse applications.#####The Science research was supported by the Air force Office of Scientific research, the Robert A. Welch Foundation, the U s army, the National institutes of health, the National Science Foundation and the Office of Naval Research.
and multiwalled carbon nanotubes were used in its structure. Carbon nanotubes have unique properties and they have numerous applications in the production of nanocomposite membranes.
The researchers created a stretchable and transparent sensor by layering a carbon nanotube film on two different kinds of electrically conductive elastomers.
In their tests, the researchers prepared two batches of multi-walled carbon nanotubes, one with carboxyl groups and the other with hydroxyl groups attached.
and gather data about reactions that can be observed only as they are happening inside a battery("Probing Lithium Germanide Phase Evolution and Structural Change in a Germanium-in-Carbon nanotube Energy storage system").
the team carefully engineered a 3d supercapacitor with carbon nanotube electrodes, and a hybrid battery. Both of them were fully functional even at 75 percent compression,
#Carbon nanotube finding could lead to flexible electronics with longer battery life Led by materials science Associate professor Michael Arnold
and Professor Padma Gopalan the team has reported the highest-performing carbon nanotube transistors ever demonstrated. In addition to paving the way for improved consumer electronics this technology could also have specific uses in industrial and military applications.
In a paper published recently in the journal ACS Nano Arnold Gopalan and their students reported transistors with an on-off ratio that's 1000 times better and a conductance that's 100 times better than previous state-of-the-art carbon nanotube transistors.
Until now these two challenges have limited the development of high-performance carbon nanotube transistors. Building on more than two decades of carbon nanotube research in the field the UW-Madison team drew on cutting-edge technologies that use polymers to selectively sort out the semiconducting nanotubes achieving a solution of ultra-high-purity semiconducting carbon nanotubes.
Previous techniques to align the nanotubes resulted in less than-desirable packing density or how close the nanotubes are to one another
In that technique researchers exploited a self-assembly phenomenon triggered by rapidly evaporating a carbon nanotube solution.
The team's most recent advance also brings the field closer to realizing carbon nanotube transistors as a feasible replacement for silicon transistors in computer chips
With these results we've really made a leap in carbon nanotube transistors. Our carbon nanotube transistors are an order of magnitude better in conductance than the best thin film transistor technologies currently being used commercially
while still switching on and off like a transistor is supposed to function. The researchers have patented their technology through the Wisconsin Alumni Research Foundation
#Carbon nanotube finding could lead to flexible electronics with longer battery life University of Wisconsin-Madison materials engineers have made a significant leap toward creating higher-performance electronics with improved battery life and the ability to flex
the team has reported the highest-performing carbon nanotube transistors ever demonstrated. In addition to paving the way for improved consumer electronics,
Gopalan and their students reported transistors with an on-off ratio that 1, 000 times better and a conductance that 100 times better than previous state-of-the-art carbon nanotube transistors. arbon nanotubes are very strong and very flexible,
Until now, these two challenges have limited the development of high-performance carbon nanotube transistors. Building on more than two decades of carbon nanotube research in the field
the UW-Madison team drew on cutting-edge technologies that use polymers to selectively sort out the semiconducting nanotubes,
In that technique, researchers exploited a self-assembly phenomenon triggered by rapidly evaporating a carbon nanotube solution.
The team most recent advance also brings the field closer to realizing carbon nanotube transistors as a feasible replacement for silicon transistors in computer chips and in high-frequency communication devices,
wee really made a leap in carbon nanotube transistors. Our carbon nanotube transistors are an order of magnitude better in conductance than the best thin film transistor technologies currently being used commercially
while still switching on and off like a transistor is supposed to function. The researchers have patented their technology through the Wisconsin Alumni Research Foundation
Ultimately this will help design new carbon nanotube based membranes for water filtration with reduced energy consumption. rowd-sourced computing power was essential to the success of our project.
senior author of the paper and director of the Alan G. Macdiarmid Nanotech Institute at UT Dallas. One key to the performance of the new conducting elastic fibers is the introduction of buckling into the carbon nanotube
the Robert A. Welch Distinguished Chair in Chemistry at UT Dallas. e make the inelastic carbon nanotube sheaths of our sheath-core fibers super stretchable by modulating large buckles with small buckles,
By adding a thin overcoat of rubber to the sheath-core fibers and then another carbon nanotube sheath,
she said. he only exotic component is the carbon nanotube aerogel sheet used for the fiber sheath.
to manufacture carbon nanotube aerogel sheets for diverse applications c
#New receptor for controlling blood pressure discovered High blood pressure is a primary risk factor in the development of many cardiovascular diseases.
In their tests, the researchers prepared two batches of multi-walled carbon nanotubes, one with carboxyl groups and the other with hydroxyl groups attached.
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