Latest Carbon nanotube Stories
Over the past couple of decades, atomic force microscopy (AFM) has emerged as a powerful tool for imaging surfaces at astonishing resolutions"”fractions of a nanometer in some cases. But suppose you're more concerned with what lies below the surface? Researchers at the National Institute of Standards and Technology (NIST) have shown that under the right circumstances, surface science instruments such as the AFM can deliver valuable data about sub-surface conditions.Their recently published*...
New, simple technique enables large-scale production of graphene at room temperature; researchers use graphene to build chemical sensors, ultracapacitors Researchers at Rensselaer Polytechnic Institute have developed a simple new method for producing large quantities of the promising nanomaterial graphene. The new technique works at room temperature, needs little processing, and paves the way for cost-effective mass production of graphene.An atom-thick sheet of carbon arranged in a honeycomb...
Scientists have made a breakthrough toward creating nanocircuitry on graphene, widely regarded as the most promising candidate to replace silicon as the building block of transistors. They have devised a simple and quick one-step process based on thermochemical nanolithography (TCNL) for creating nanowires, tuning the electronic properties of reduced graphene oxide on the nanoscale and thereby allowing it to switch from being an insulating material to a conducting material.The technique works...
In a paper in Nature Chemistry, Vivek Shenoy and colleagues pinpointed noncarbon atoms that create defects when graphene is produced through a technique called graphene-oxide reduction. The researchers also propose how to make that technique more efficient by precisely applying hydrogen "“ rather than heat "“ to remove the impurities.Graphene, a carbon sheet that is one-atom thick, may be at the center of the next revolution in material science. These ultrathin sheets hold great potential...
A team of Duke University chemists has perfected a simple way to make tiny copper nanowires in quantity. The cheap conductors are small enough to be transparent, making them ideal for thin-film solar cells, flat-screen TVs and computers, and flexible displays."Imagine a foldable iPad," said Benjamin Wiley, an assistant professor of chemistry at Duke. His team reports its findings online this week in Advanced Materials.Nanowires made of copper perform better than carbon nanotubes,...
New graphene-based electronics could take a page out of the silicon electronics bookAn organic molecule that has been found to be effective in making silicon-based electronics may be viable for building electronics on sheets of carbon only a single molecule thick. Researchers at the Max Plank Institute for Metals Research in Stuttgart report the advance in a paper appearing online in the journal Physical Review B on June 1.Ultrathin carbon layers known as graphene show promise as the basis...
WESTWOOD, Mass., June 1 /PRNewswire/ -- Today, Nano-C, Inc. introduced a new fullerene derivative n-type for use in Organic Photovoltaic applications. Nano-C is pleased to announce the availability of a new fullerene derivative, Indene C60 Mono Adduct ("ICMA"). ICMA's use in Organic Photovoltaic devices was described in "Indene-C60 Bis adduct: A New Acceptor for High-Performance Polymer Solar Cells," J. Am. Chem. Soc., 2010, 132 (4), pp 1377-1382. The performance characteristics of...
Research could yield novel composites, touch-screen displaysIn a development that could lead to novel carbon composites and touch-screen displays, researchers from Rice University and the Technion-Israel Institute of Technology today unveiled a new method for producing bulk quantities of one-atom-thick sheets of carbon called graphene.The research is available online in the journal Nature Nanotechnology.When stacked together, graphene sheets make graphite, which has been commonly used as...
Rice researchers print field-effect transistors with nano-infused inkRice University researchers have discovered thin films of nanotubes created with ink-jet printers offer a new way to make field-effect transistors (FET), the basic element in integrated circuits.While the technique doesn't exactly scale down to the levels required for modern microprocessors, Rice's Robert Vajtai hopes it will be useful to inventors who wish to print transistors on materials of any kind, especially on...
A new transistor controlled by the molecule that powers biological cells is bringing humans and machines one-step closer to merging. The device could be used in medical devices or prosthetics wired directly into the human body because of its nano-scale size. "Our devices make a bridge between the biological world and the electronic world," Aleksandr Noy, who developed the transistor along with colleagues at Lawrence Livermore National Laboratories in California, told MSN News. ...
