Sentences with phrase «nanotube devices»

In the paper, researchers examined the effect of a fluoropolymer coating called PVDF - TrFE on single - walled carbon nanotube (SWCNT) transistors and ring oscillator circuits, and demonstrated that these coatings can substantially improve the performance of single - walled carbon nanotube devices.

His team succeeded in producing a porous ultracapacitor material that approached the performance of a nanotube device but potentially at a fraction of the cost.

Carbon nanotube device stores energy efficiently but gives it up more quickly than conventional rechargeables

Not exact matches

Though nanotubes were first discovered in 1991, and were hailed almost immediately as a technology of the future for sensing devices, it is only in the last couple years that physicists such as Hongjie Dai, of Stanford University, have achieved enough control over the tubes» assembly to make them behave reliably.

If these nanotubes could be customized to distinguish other gases, many of them could be placed on a single device, creating a «nose on a chip» that could ferret out pollutants or analyze the atmospheres of other planets.

Team members sprayed carbon nanotubes onto a plastic film — two such films act as both the device's electrodes and charge collectors.

In early testing, a three - dimensional (3D) fiber - like supercapacitor made with the uninterrupted fibers of carbon nanotubes and graphene matched or bettered — by a factor of four — the reported record - high capacities for this type of device.

Metal chips that slide back and forth inside carbon nanotubes could form the 1s and 0s needed to act as archival storage devices.

Instead, the device developed by physicist Kaili Jiang of Tsinghua University in Beijing is just a thin film of nanotubes.

To build their device, the M.I.T. scientists used carbon nanotubes, which are extremely effective absorbers of sunlight; they approach theoretical «blackbody absorbers» that take in 100 percent of light shone on them.

Ultimately, the researchers believe their device design — a combination of a carbon nanotube antenna and diode rectifier — could compete with conventional photovoltaic technologies for producing electricity from sunlight and other sources.

The find, announced on 3 October at a meeting of the American Vacuum Society in Boston, could bring down the production costs of nanotubes and help researchers apply them in a range of new materials and devices.

The devices, made from transparent and flexible carbon nanotube films, don't require any of the bulky magnets and sound cones of conventional speakers.

Kotov is creating fabrics partially made from conductive carbon nanotubes (picture microscopic ziti made of rolled carbon atoms), which he expects could lead to garments that are essentially themselves electronic devices.

Wardle says the combination of carbon nanotubes and multilayer coatings may help finely tune microfluidic devices to capture extremely small and rare particles, such as certain viruses and proteins.

Plank and her team attached their estrogen - binding aptamers to the other important part of their device: the carbon nanotube thin film field effect transistor (CNT FET).

Furthermore, calculations have shown that it is possible to create a combined device, where inside a two - layer carbon nanotube there will be magnetic fullerenes.

With this method, they created a three - dimensional array of permeable carbon nanotubes within a microfluidic device, through which fluid can flow.

Once the researchers attached the aptamers to the carbon nanotubes, they tested the devices in a buffer specifically chosen because it has similar properties to biological fluids.

The team integrated a three - dimensional array of carbon nanotubes into a microfluidic device by using chemical vapor deposition and photolithography to grow and pattern carbon nanotubes onto silicon wafers.

«New device uses carbon nanotubes to snag molecules: Nanotube «forest» in a microfluidic channel may help detect rare proteins, viruses.»

The rodents were then scanned with the Rice lab's custom - built optical device to detect the faint emission signatures of as little as 100 picograms of nanotubes.

They then attached strips of gold to both ends of each nanotube, creating a transistor, and linked up to three such devices in various ways to make circuits that would execute simple logical functions: flipping a signal from off to on or vice versa, turning two off signals into an on, storing a unit of information or creating an oscillating signal.

Researchers at McGill University have developed a new, low - cost method to build DNA nanotubes block by block — a breakthrough that could help pave the way for scaffolds made from DNA strands to be used in applications such as optical and electronic devices or smart drug - delivery systems.

The study, said George V. Nazin, a professor of physical chemistry, modeled the behavior often observed in carbon nanotube - based electronic devices, where electronic traps are induced by stochastic external charges in the immediate vicinity of the nanotubes.

«We found substantial performance improvements with the fluoropolymer coated single - walled carbon nanotube both in device level and circuit level,» Dodabalapur noted.

A team of Stanford engineers has built a basic computer using carbon nanotubes, a semiconductor material that has the potential to launch a new generation of electronic devices that run faster, while using less energy, than those made from silicon chips

The team fabricated simple devices consisting of a carbon nanotube bridging two electrodes.

They discovered that light - induced electrical currents rise much more sharply at the intersection of carbon nanotubes and silicon, compared to the intersection of silicon and a metal, as in traditional photodiode devices.

A Japanese collaboration led by Osaka University has explored the ability of single molecules to affect the noise generated by carbon nanotube - based nanoscale electronic devices.

Ying Zhou and Reiko Azumi from Japan's National Institute of Advanced Industrial Science and Technology reviewed the latest research on the use of carbon nanotubes in manufacturing an important component of optoelectronic devices called transparent conductive films (TCFs).

«In microelectronics, this approach to growing high - density carbon nanotube forests on conductors can potentially replace and outperform the current copper - based interconnects in a future generation of devices,» says Cambridge researcher Hisashi Sugime.

«The high density aspect is often overlooked in many carbon nanotube growth processes, and is an unusual feature of our approach,» says John Robertson, a professor in the electronic devices and materials group in the department of engineering at Cambridge.

Due to their exceptional properties, carbon nanotubes are expected to enhance the performance of current solar cells through efficient charge transport inside the device.

AN ENERGY - HARVESTING device that uses carbon nanotubes is hitting power levels higher than any others have ever managed.

Nanotubes are stronger than steel and smaller than any element of silicon - based electronics — the ubiquitous component of today's electrical devices — and have better conductivity, which means they can potentially process information faster while using less energy.

The functionalized carbon nanotubes have significant prospects for further development, Doorn noted, including advances in functionalization chemistry; integration into photonic, plasmonic and metamaterials structures for further control of quantum emission properties; and implementation into electrically driven devices and optical circuitry for diverse applications.

The new devices have luminescence systems that function like cathode ray tubes, with carbon nanotubes acting as cathodes, and a phosphor screen in a vacuum cavity acting as the anode.

In the journal Review of Scientific Instruments [abstract], from AIP Publishing, the researchers detail the fabrication and optimization of the device, which is based on a phosphor screen and single - walled carbon nanotubes as electrodes in a diode structure.

While traditional semiconductor lasers depend on the width of the lasing material's bandgap, quantum cascade lasers do not, said Weilu Gao, a co-author on the study and a postdoctoral researcher in Kono's group that is spearheading device development using aligned nanotubes.

Home > Press > Plasmons triggered in nanotube quantum wells: Rice, Tokyo Metropolitan scientists create platform for unique near - infrared devices

Abstract: Carbon nanotubes bound for electronics need to be as clean as possible to maximize their utility in next - generation nanoscale devices, and scientists at Rice and Swansea universities have found a way to remove contaminants from the nanotubes.

«This has a potential limiting factor on the size of nanotube - based electronic devices,» he said.

«If nanotubes are to be the next - generation lightweight conductor, then consistent results, batch - to - batch and sample - to - sample, are needed for devices such as motors and generators as well as power systems.»

Northwestern University researchers recently used metallic nanotubes to make flexible, semi-transparent, highly conductive films that can be used for devices such as flat - panel displays and solar cells.

«High purity carbon nanotube thin films not only have the potential to make inroads into current applications but also accelerate the development of emerging technologies such as organic light - emitting diodes and organic photovoltaic devices.