| Carbon nanotubes (238) |  |
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| Carbon nanotubes (238) | |
| Metal foam (15) | |
| Quantum dots (237) | |
| Silicene (35) | |
a thin, transparent film made from microscopic tubes called carbon nanotubes (CNTS), aligned parallel to the plane of the film.
which is basically the same stuff as the walls of carbon nanotubes but flattened into sheets.
They can even lay down carbon nanotubes, tiny structures made of linked carbon atoms, and are working to align them to build futuristic circuits, according to Mccarroll.
but they say theye made a breakthrough that could take thermophotovoltaics far beyond where it gone before. mit thermophotovoltaics MIT nanophotonic solar thermophotovoltaic device, with an array of multialled carbon nanotubes as the absorber, a oneimensional silicon/silicon dioxide photonic crystal as the emitter
T) he team inserted a two-layer absorber-emitter device made of novel materials including carbon nanotubes and photonic crystals between the sunlight and the PV cell.
and nanotubes By injecting carbon nanotubes into the bloodstream, scientists can use near-infrared lasers to see blood flow in a living animal brain.
or NIR-IIA, involves injecting water-soluble carbon nanotubes into a live mouse bloodstream. The researchers then shine a near-infrared laser over the rodent skull.
Second, injecting carbon nanotubes needs approval for clinical application; the scientists are currently investigating alternative fluorescent agents.
#Handheld terahertz cameras could replace MRI Rice university rightoriginal Studyposted by Mike Williams-Rice on June 11 2014scientists have used carbon nanotubes to create compact terahertz sensors that operate at room temperature.
The scientific community has long been interested in the terahertz properties of carbon nanotubes says Franãois LÃNARD a scientist at Sandia National Laboratories.
and his team have investigated terahertz phenomena in carbon nanotubes but those have focused mainly on the use of one or a bundle of nanotubes.
But that s what we ve achieved with the carbon nanotubes. The research was reported in the journal Nano Letters.
The chip, festooned with tiny carbon nanotubes (engineered segments of carbon that are efficient electrical conductors) and treated with a proprietary polymer
Left to their own devices carbon nanotubes form clumps that are perfectly wrong for turning into the kind of strong conductive fibers needed for projects ranging from nanoscale electronics to macro-scale power grids.
and lead authors Chengmin Jiang a graduate student and Avishek Saha a Rice alumnus starts with negatively charging carbon nanotubes by infusing them with potassium a metal and turning them into a kind of salt known as a polyelectrolyte.
and DNA the assembly of nanotechnological components or small organic polymers or the chemical alteration of carbon nanotubes. e need to continue to optimize the system
and nanotubes Stanford university rightoriginal Studyposted by Bjorn Carey-Stanford on August 7 2014by injecting carbon nanotubes into the bloodstream scientists can use near-infrared lasers to see blood flow in a living animal s brain.
or NIR-IIA involves injectingâ water-soluble carbon nanotubes into a live mouse s bloodstream. The researchers then shine a near-infrared laser over the rodent s skull.
Second injecting carbon nanotubes needs approval for clinical application; the scientists are currently investigating alternative fluorescent agents.
or PDMS, and carbon nanotubes. HOW IT WORKS When the terahertz light hits the transducer, the nanotubes absorb it,
and solar cells but Pint and Westover are confident that the rules that govern the load-bearing character of their design will carry over to other materials such as carbon nanotubes and lightweight porous metals like aluminum.
and medical devices to structural components for the automotive civil and aerospace industries. he cellulose nanocrystals represent a potential green alternative to carbon nanotubes for reinforcing materials such as polymers and concrete.
Stanford university rightoriginal Studyposted by Tom Abate-Stanford on September 27 2013engineers have built a basic computer using carbon nanotubes a success that points to a potentially faster more efficient alternative to silicon chips.
Mihail Roco a senior advisor for nanotechnology at the National Science Foundation called the work n important scientific breakthrough. t was roughly 15 years ago that carbon nanotubes were fashioned first into transistors the on-off switches
But a bedeviling array of imperfections in these carbon nanotubes has frustrated long efforts to build complex circuits using CNTS.
and low-power switching make carbon nanotubes excellent candidates to serve as electronic transistors. NTS could take us at least an order of magnitude in performance beyond where you can project silicon could take uswong said.
Depending on how the CNTS grow a fraction of these carbon nanotubes can end up behaving like metallic wires that always conduct electricity instead of acting like semiconductors that can be switched off.
beyond silicon. hese are initial necessary steps in taking carbon nanotubes from the chemistry lab to a real environmentsays Supratik Guha director of physical sciences for IBM s Thomas J. Watson Research center
since graphene (and its cousin material, carbon nanotubes) is the only material with the high strength-to-weight ratio required for this kind of hypothetical application.
each sensor utilizes an array of tens of thousands of carbon nanotubes, which have had copper atoms attached to them.
#Explosives and Pesticides Can Be detected by Using Bee venom Scientists from MIT have discovered that by coating carbon nanotubes in bee venom,
##Researchers at#USC s Viterbi School of Engineeringhave created a#functioning synapse#using neurons made from carbon nanotubes.
A project at IBM is now aiming to have built transistors using carbon nanotubes ready to take over from silicon transistors soon after 2020.
and unlike carbon nanotubes, they don t behave similarly to silicon transistors, says Hannon. Subhasish Mitra, a professor who worked on the project.
We now know that you can build something useful with carbon nanotubes, he says. The question is,
when they reinforced the polymer with carbon nanotubes, it became 50 percent stronger. IBM Research's James Hedrick, who co-authored the new paper,
The new muscles contract to about 50 percent of their length compared with carbon nanotubes which contract to only about 10 percent their initial length he said.
what the paper describes as highly tunable composite films of carbon nanotubes and silver nanoparticles that are patterned on high-aspect-ratio elastic fibers.
A handful work at room temperature (by using carbon nanotubes to detect electrons for example2), but they cannot operate in water#a serious obstacle to using such devices in living organisms.
But in the new work they instead used carbon nanotubes atom-thick sheets of carbon rolled into cylinders grown on the slopes of the emitters like trees on a mountainside.
Grossman team tried attaching the molecules to carbon nanotubes (CNTS), but t incredibly hard to get these molecules packed onto a CNT in that kind of close packing,
The adoption of carbon nanotubes to increase materialsenergy storage density is lever, says Yosuke Kanai, an assistant professor of chemistry at the University of North carolina who was involved not in this work.
In a new Nature Materials paper, the researchers report boosting plantsability to capture light energy by 30 percent by embedding carbon nanotubes in the chloroplast,
the researchers also embedded semiconducting carbon nanotubes, coated in negatively charged DNA, into the chloroplasts. Plants typically make use of only about 10 percent of the sunlight available to them,
but carbon nanotubes could act as artificial antennae that allow chloroplasts to capture wavelengths of light not in their normal range, such as ultraviolet, green,
With carbon nanotubes appearing to act as a rosthetic photoabsorber photosynthetic activity measured by the rate of electron flow through the thylakoid membranes was 49 percent greater than that in isolated chloroplasts without embedded nanotubes.
When nanoceria and carbon nanotubes were delivered together, the chloroplasts remained active for a few extra hours. The researchers then turned to living plants
Lean green machines The researchers also showed that they could turn Arabidopsis thaliana plants into chemical sensors by delivering carbon nanotubes that detect the gas nitric oxide,
it alters the tube fluorescence. e could someday use these carbon nanotubes to make sensors that detect in real time, at the single-particle level,
To create these ynthetic antibodies, the researchers used carbon nanotubes hollow, nanometer-thick cylinders made of carbon that naturally fluoresce
Moreover, this approach can provide a more durable alternative to coating sensors such as carbon nanotubes with actual antibodies,
when the polymers are exposed to carbon nanotubes, the hydrophobic regions latch onto the tubes like anchors
Among nanomaterials, carbon-based nanoparticles such as carbon nanotubes and graphene have shown promising results, but they suffer from relatively low electrical conductivity,
Other groups have made similar supercapacitors using carbon nanotubes or other materials, but the niobium yarns are stronger and 100 times more conductive.
"Carbon nanotubes are very strong and very flexible, so they could also be used to make flexible displays
"Carbon nanotubes are single atomic sheets of carbon rolled up into a tube. As some of the best electrical conductors ever discovered, carbon nanotubes have long been recognized as a promising material for next-generation transistors,
which are semiconductor devices that can act like an on-off switch for current or amplify current. This forms the foundation of an electronic device.
However, researchers have struggled to isolate purely semiconducting carbon nanotubes, which are crucial, because metallic nanotube impurities act like copper wires and"short"the device.
achieving a solution of ultra-high-purity semiconducting carbon nanotubes. Previous techniques to align the nanotubes resulted in less than-desirable packing density,
Two studies Complement activation by carbon nanotubes and its influence on the phagocytosis and cytokine response by macrophages and Complement deposition on nanoparticles can modulate immune responses by macrophage B
and T cells found that carbon nanotubes (CNTS) triggered a chain reaction in the complement system which is part of the innate immune system
The researchers combined semiconductor nanorods and carbon nanotubes to create a wireless light-sensitive flexible film that could potentially replace a damaged retina.
"The breakthrough extends a stream of nanotechnology research at Rice that began with chemist Robert Hauge's 2009 invention of a"flying carpet"technique to grow very long bundles of aligned carbon nanotubes.
To increase the nanowires'surface area Nath can make them hollow in the middle much like carbon nanotubes found in optics and electronics.
Carbon nanotubes are known for their strength and high electrical conductivity and are used in products from baseball bats and other sports equipment to lithium-ion batteries and touchscreen computer displays.
Zang and his team found a way to break up bundles of the carbon nanotubes with a polymer
The National Science Foundation (NSF)- funded scientist theorized correctly that he could adapt it to separate carbon nanotubes rolled sheets of graphene (a single atomic layer of hexagonally bonded carbon atoms) long recognized for their potential applications in computers
The carbon nanotubes separation process which Hersam developed begins with a centrifuge tube. Into that we load a water based solution and introduce an additive
We then load the carbon nanotubes and put it into the centrifuge which drives the nanotubes through the gradient.
Carbon nanotubes are highly resilient Hersam says. That allows us to integrate electronics on flexible substrates like clothing shoes and wrist bands for real time monitoring of biomedical diagnostics and athletic performance.
Brighter new energy saving flat panel lights based on carbon nanotubes Even as the 2014 Nobel prize in Physics has enshrined light emitting diodes (LEDS) as the single most significant and disruptive energy-efficient lighting solution of today scientists
Electronics based on carbon especially carbon nanotubes (CNTS) are emerging as successors to silicon for making semiconductor materials.
Scientists from Tohoku University in Japan have developed a new type of energy-efficient flat light source based on carbon nanotubes with very low power consumption of around 0. 1 Watt for every hour's operation
The new devices have luminescence systems that function more like cathode ray tubes with carbon nanotubes acting as cathodes
In recent years carbon nanotubes have emerged as a promising material of electron field emitters owing to their nanoscale needle shape and extraordinary properties of chemical stability thermal conductivity and mechanical strength.
Many researchers have attempted to construct light sources with carbon nanotubes as field emitter Shimoi said. But nobody has developed an equivalent and simpler lighting device.
But in the new work they instead used carbon nanotubes atom-thick sheets of carbon rolled into cylinders grown on the slopes of the emitters like trees on a mountainside.
The best carbon nanotubes (CNTS) have demonstrated conductivities far beyond those of the best metals. Thus future windings made of CNTS may have a double conductivity compared with the present-day copper windings.
Carbon nanotubes are rapidly becoming more common because of their usefulness in nanoelectric devices composite materials and biomedicine.
and the animals that eat them Previous research has shown that carbon nanotubes take a long time to degrade through natural processes
whether or not these pollutants can be stripped away from the carbon nanotubes by these animals'digestive systems after being ingested continued Ferguson.
Biodistribution of carbon nanotubes in the body More information: Fate of single walled carbon nanotubes in wetland ecosystems. Schierz A. Espinasse B. Wiesner M. R. Bisesi J. H. Sabo-Attwood T. Ferguson P. L. Environmental science:
The exceptional strength of carbon nanotubes prevents the cathode from being destroyed. Traditionally accelerator scientists use lasers to strike cathodes
and carbon nanotubes is one of the most promising novel technology for producing inexpensive printed solar cells.
Physicists at Umeå University have discovered that one can reduce the number of carbon nanotubes in the device by more than 100 times
Carbon nanotubes are more and more attractive for use in solar cells as a replacement for silicon. They can be mixed in a semiconducting polymer
if carbon nanotubes are connected to each other in a controlled manner to form complex nanosized networks, one can achieve significantly higher charge transport
Previous studies have reported that there is a percolation threshold for the amount of carbon nanotubes necessary to transport efficiently electric charges in a device.
#Nanotubes help healing hearts keep the beat (Phys. org) Carbon nanotubes serve as bridges that allow electrical signals to pass unhindered through new pediatric heart-defect patches invented at Rice university and Texas Children's Hospital.
Because the toxicity of carbon nanotubes in biological applications remains an open question Pasquali said the fewer one uses the better.
and structural hybridization of carbon nanotubes (CNTS) and graphene via a two-step chemical vapor deposition (CVD) scientists have fabricated nitrogen-doped aligned carbon nanotube/graphene (N-ACNT/G) sandwiches
Rational hybridization of N-doped graphene/carbon nanotubes for oxygen reduction and oxygen evolution reaction More information:
While one-dimensional materials such as carbon nanotubes and nanowires also allow excellent electrostatics and at the same time possess band gap they are not suitable for low-cost mass production due to their process complexities she said.
Presenting their findings today 5 august 2014 in the journal Nanotechnology the researchers have demonstrated the material's superior performance compared to commercially available carbon graphene and carbon nanotubes.
and carbon nanotubes as reported in previous studies. Explore further: Nano-supercapacitors for electric cars More information:
This coating is mad e of carbon nanotubes-each 10000 times thinner than a human hair wrote Ian Johnston in The Independent on Sunday.
During the procedure, the carbon nanotubes and thus the pore size shrink to a lesser extent than they would in the absence of the confining template
"We need to use structure specific carbon nanotubes for real applications. The structure controlled growth has been a dream of our field for about 20 years.
I believe her idea to use W-based catalyst is the landmark of growth of carbon nanotubes.
We expect a plenty of very useful applications of carbon nanotubes based on her new discovery, "said Professor Shigeo Maruyama from The University of Tokyo,
who also serves the president of Fullerene, Carbon nanotubes, and Graphene research Society of Japan. Single-walled carbon nanotube (SWNT
In 2009, the International Technology Roadmap for Semiconductors (ITRS) selected carbon-based nanoelectronics to include carbon nanotubes
This development is very important for the applications of carbon nanotubes in many fields especially nanoelectronics. c
#Lab unzips nanotubes into ribbons by shooting them at a target (Phys. org) Carbon nanotubes unzipped into graphene nanoribbons by a chemical process invented at Rice university are finding use in all kinds of projects
Until now we knew we could use mechanical forces to shorten and cut carbon nanotubes. This is the first time we have showed carbon nanotubes can be unzipped using mechanical forces.
The researchers fired pellets of randomly oriented multiwalled carbon nanotubes from a light gas gun built by the Rice lab of materials scientist Enrique Barrera with funding from NASA.
We were investigating possible applications for carbon nanotubes in space when we got this result. The effect was confirmed through molecular simulations.
Scientists shoot carbon nanotubes out of high-speed gun (w/video) More information: Unzipping Carbon nanotubes at High Impact.
Sehmus Ozden Pedro A s. Autreto Chandra Sekhar Tiwary Suman Khatiwada Leonardo Machado Douglas S. Galvao Robert Vajtai Enrique V. Barrera
#Scientists shoot carbon nanotubes out of high-speed gun (w/video)( Phys. org) What happens when you shoot multiwalled carbon nanotubes (MWCNTS) out of a gun onto an aluminum target at a velocity of more than 15000 mph?
Unzipping carbon nanotubes to create 2d graphene nanoribbons is very useful in nanoscience but until now it has typically been achieved with chemical contaminants that leave back contaminants.
They are superior to carbon nanotubes as their bandgap is more predictable. Also they are superior to graphene itself as graphene has no bandgap
Unzipping Carbon nanotubes at High Impact. Nano Letters. DOI: 10.1021/nl501753 0
#Super-stretchable yarn is made of graphene A simple, scalable method of making strong, stretchable graphene oxide fibers that are scrolled easily into yarns
since carbon nanotubes are more transparent, flexible, and can be processed at a lower cost. Electrical engineering professor Dr. Chongwu Zhou and USC Viterbi graduate students Haitian Chen
"Before then, we were working hard to try to turn carbon nanotubes into n-type transistors and then one day,
"Carbon nanotubes are so small that they can only be viewed through a scanning electron microscope. This hybridization of carbon nanotube thin films and IGZO thin films was achieved by combining their types, p-type and n-type, respectively,
If only carbon nanotubes had been used, then the circuits would not be power-efficient. By combining the two materials,
One the seamless connection between graphene covered copper foil and carbon nanotubes enhances the active material-current collector contact integrity
but Pint and Westover are confident that the rules that govern the load-bearing character of their design will carry over to other materials, such as carbon nanotubes and lightweight porous metals like aluminum.
This one packs an interconnected network of graphene and carbon nanotubes so tightly that it stores energy comparable to some thin-film lithium batteriesn area where batteries have held traditionally a large advantage.
High-performance low-cost ultracapacitors built with graphene and carbon nanotubes More information: Paper: Scalable synthesis of hierarchically structured carbon nanotuberaphene fibres for capacitive energy storage dx. doi. org/10.1038/nnano. 2014.9 n
particularly between carbon nanotubes and graphene, would affect the final hybrid properties in all directions. They found that introducing junctions would add extra flexibility
Carbon nanotubes are rolled-up arrays of perfect hexagons of atoms; graphene is a rolled out sheet of the same.
Shahsavari said. e compared our 3-D hybrid structures with the properties of 2-D stacked graphene sheets and 1-D carbon nanotubes.
The latter allows pillared graphene to exhibit remarkable toughness along out-of-plane directions, a feature that is not possible in 2-D stacked graphene sheets or 1-D carbon nanotubes,
one that includes carbon nanotubes. Now Fraunhofer has accomplished both feats, and with the most basic device imaginable:
3d Bioprinted Carbon nanotubes Used to Stimulate Bone Regrowth How do you 3d print bone? A couple of years ago,
if you add carbon nanotubes to the mix to create a 3d electrical network within the bone tissue,
and scaffolds with the required shapes and sizes. he carbon nanotubes (or CNT) were added to the bioprintable material mixture to create a hree-dimensional electrical conducting network all through the volume of the scaffold,
Tungstenglass is based a borosilicate glass that is infused with tungsten and carbon nanotubes. The composition enhances the protective qualities of the glass by providing improved resistance to impact and scratching,
while because of the electrical properties of the Tungsten and Carbon nanotubes the electrical conductivity is improved making for a more sensitive surface for Human fingers."
The company has taken renewable plant oils and added Tungsten and Carbon nanotubes to the oil blend.
#Inner Space of Carbon nanotubes Could act as a Template for Synthesis of Linear-Chain Nanodiamonds The inner space of carbon nanotubes can act as a template for the synthesis of nanodiamond-like carbon chains.
Hisanori Shinohara from Nagoya University in Japan and his colleagues have developed a method that uses carbon nanotubes as a reaction vessel for the templated polymerization of linear-chain nanomaterials.
and with each other inside the carbon nanotubes, "the authors write. And:""Depending on the inner diameter of the carbon nanotubes,
the inserted species can either be transformed into the linear-chain polymers or into amorphous carbon."
the formed carbon nanotubes filled with the nanodiamondoid polymer look like macaroni filled with spaghetti. In order to extract the inner polymer,
#Researchers Build Optical Rectennas Using Carbon nanotubes and Tiny Rectifiers Optical rectennas, antenna-rectifier diodes that convert light into DC current, have been built using multiwall carbon nanotubes with integrated nanoscale rectifiers.
The produced optical rectennas hold promise as photodetectors that do not require cooling and energy harvesters that could be used for conversion of waste heat to electricity.
The carbon nanotubes in the devices function as antennas for capturing light. When the light waves strike the nanotube antennas,
-Prof Baratunde Cola, Georgia Tech The team employed nanoscale fabrication techniques alongside metallic multiwall carbon nanotubes to build devices that utilized light's wave nature rather than its particle nature.
the researchers grew forests of vertically aligned carbon nanotubes on a conductive substrate. Atomic layer chemical vapour deposition was used to in sulate the nanotubes with a coating of aluminum oxide.
allowing multiple conduction channels in the carbon nanotubes, and reducing the structural resistance. e think we can reduce the resistance by several orders of magnitude just by improving the fabrication of our device structures,
'While other designs for space elevators have involved complex designs using graphene or carbon nanotubes, the Thoth design reportedly uses inflatable sections
The secret of its design is a scattering of billions of carbon'nanotubes'-microscopic hollow carbon rods.
"Some researchers have wanted to make transistors out of carbon nanotubes but the problem is that they grow in all sorts of directions,
which relies on materials called carbon nanotubes, allows scientists to build the chip in three dimensions. The 3d design enables scientists to interweave memory,
Carbon nanotubes To get around this issue Shulaker and his advisers at Stanford university, Subhasish Mitra and H.-S. Philip Wong, looked to a completely different material:
carbon nanotubes, or miniscule mesh rods made of carbon atoms, which can be processed at low temperatures. Carbon nanotubes (CNTS) have electrical properties similar to those of conventional silicon transistors.
In a head-to-head competition between a silicon transistor and a CNT transistor,"hands down, the CNT would win,
"However, carbon nanotubes grow in a disorderly manner, "resembling a bowl of spaghetti, "which is no good for making circuits,
"Some researchers have wanted to make transistors out of carbon nanotubes, but the problem is that they grow in all sorts of directions,
#Carbon nanotubes Applied to Create Electrical conductivity in Woolen Fabrics The fabrics can be used in various industries,
Researchers have tried in this research to synthesize fabrics with new properties by using simple and modified carbon nanotubes.
Carbon nanotubes have been added to woolen fabrics that are insulators by themselves. Therefore, the product can be presented to the market as a relatively conductive material.
These electrically conductive carbon nanotubes formed a network between the tobacco cells and were also able to penetrate the cell walls.
which consists of chemically modified carbon nanotubes, could be deployed in"smart packaging"that would offer much more accurate safety information than the expiration date on the package,
This MIT device, based on modified carbon nanotubes, can detect amines produced by decaying meat. It could also cut down on food waste
Carbon nanotubes can be modified chemically so that their ability to carry an electric current changes in the presence of a particular gas.
In this case, the researchers modified the carbon nanotubes with metal-containing compounds called metalloporphyrins, which contain a central metal atom bound to several nitrogen-containing rings.
particularly between carbon nanotubes and graphene, would affect the final hybrid properties in all directions. They found that introducing junctions would add extra flexibility
"Carbon nanotubes are rolled-up arrays of perfect hexagons of atoms; graphene is a rolled out sheet of the same.
Shahsavari said. e compared our 3-D hybrid structures with the properties of 2-D stacked graphene sheets and 1-D carbon nanotubes.
The latter allows pillared graphene to exhibit remarkable toughness along out-of-plane directions, a feature that is not possible in 2-D stacked graphene sheets or 1-D carbon nanotubes,
"Some researchers have wanted to make transistors out of carbon nanotubes but the problem is that they grow in all sorts of directions,
Meanwhile, researchers are working to enhance the performance of lithium-ion batteries using materials like carbon nanotubes,
and bound them in carbon nanotubes. When the molecules are present, the carbon nanotubes light up. In tests, the researchers found that their device could detect GSM and MIB concentrations as low as 10 nanograms per liter of water,
or 10,000 parts per trillion. That's not quite as sensitive as the human nose, which can detect GSM at just 5 parts per trillion,
"Some researchers have wanted to make transistors out of carbon nanotubes, but the problem is that they grow in all sorts of directions,
the team scattered billions of carbon nanotubes through the waffled plastic. Putting pressure on the plastic squeezes the nanotubes closer together
Thus, on the sensors, the team used carbon nanotubes molded into pyramidal microstructures, which are particularly effective at tunneling the signals from the electric field of nearby objects to the receiving electrode in a way that maximizes sensitivity.
#Future electronics based on carbon nanotubes First of all they are tiny--on the atomic scale and perhaps near the physical limit of how small you can shrink a single electronic switch.
But a big barrier to building useful electronics with carbon nanotubes has always been the fact that
"Now Rogers and a team of researchers have shown how to strip out the metallic carbon nanotubes from arrays using a relatively simple,
aligned arrays of carbon nanotubes packed with good densities on thin films has largely been solved by several different groups of scientists in recent years,
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