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Last updated on April 17, 2014 at 1:21 EDT

Latest carbon nanotubes Stories

2010-10-19 17:10:25

Twisting spires, concentric rings, and gracefully bending petals are a few of the new three-dimensional shapes that University of Michigan engineers can make from carbon nanotubes using a new manufacturing process. The process is called "capillary forming," and it takes advantage of capillary action, the phenomenon at work when liquids seem to defy gravity and travel up a drinking straw of their own accord. The new miniature shapes, which are difficult if not impossible to build using any...

2010-09-15 19:02:05

Carbon nanotubes "” those tiny particles poised to revolutionize electronics, medicine, and other areas "” are much bigger in the strength department than anyone ever thought, scientists are reporting. New studies on the strength of these submicroscopic cylinders of carbon indicate that on an ounce-for-ounce basis they are at least 117 times stronger than steel and 30 times stronger than Kevlar, the material used in bulletproof vests and other products. The findings, which could...

2010-09-01 20:25:44

Speakers made from carbon nanotube sheets that are a fraction of the width of a human hair can both generate sound and cancel out noise -- properties ideal for submarine sonar to probe the ocean depths and make subs invisible to enemies. That's the topic of a report on these "nanotube speakers," which appears in ACS' Nano Letters, a monthly journal. Ali Aliev and colleagues explain that thin films of nanotubes can generate sound waves via a thermoacoustic effect. Every time that an electrical...

2010-07-15 02:50:39

Rice researchers' method untangles long tubes, clears hurdle toward armchair quantum wire Rice University scientists have found the "ultimate" solvent for all kinds of carbon nanotubes (CNTs), a breakthrough that brings the creation of a highly conductive quantum nanowire ever closer. Nanotubes have the frustrating habit of bundling, making them less useful than when they're separated in a solution. Rice scientists led by Matteo Pasquali, a professor in chemical and biomolecular engineering...

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2010-06-01 09:30:12

The silicon transistors in your computer may be replaced in ten years by transistors based on carbon nanotubes. This is what scientists at the University of Gothenburg are hoping "“ they have developed a method to control the nanotubes during production. Silicon is subject to certain limitations, and industry is looking for a replacement. The electronics industry has net annual sales of over USD 200 billion, and this means that the development is being fuelled by powerful forces. Carbon...

2010-05-26 11:27:29

Rice researchers print field-effect transistors with nano-infused ink Rice 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...

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2010-05-10 11:19:44

Rice researchers spin pure batches of nanotubes species In two new papers, Rice University researchers report using ultracentrifugation (UCF) to create highly purified samples of carbon nanotube species. One team, led by Rice Professor Junichiro Kono and graduate students Erik Haroz and William Rice, has made a small but significant step toward the dream of an efficient nationwide electrical grid that depends on highly conductive quantum nanowire. The other, led by Rice Professor Bruce...

2010-04-07 14:25:37

Team of more than 20 researchers directed white blood cells containing the oxidizing enzyme "myeloperoxidase" to attack nanotubes, reducing their unhealthful effects and prompting natural biodegradation, says report in "Nature Nanotechnology" An international study based at the University of Pittsburgh provides the first identification of a human enzyme that can biodegrade carbon nanotubes-the superstrong materials found in products from electronics to plastics-and in laboratory tests offset...

2010-04-05 10:10:18

A team of Swedish and American scientists has shown for the first time that carbon nanotubes can be broken down by an enzyme - myeloperoxidase (MPO) - found in white blood cells. Their discoveries are presented in Nature Nanotechnology and contradict what was previously believed, that carbon nanotubes are not broken down in the body or in nature. The scientists hope that this new understanding of how MPO converts carbon nanotubes into water and carbon dioxide can be of significance to...

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2010-04-01 13:23:40

A closer look at a promising nanotube coating that might one day improve solar cells has turned up a few unexpected wrinkles, according to new research* conducted at the National Institute of Standards and Technology (NIST) and North Dakota State University (NDSU)"”research that also may help scientists iron out a solution. The scientists have found that coatings made of single-walled carbon nanotubes (SWCNTs) are not quite as deformable as hoped, implying that they are not an easy...