Monday, December 18, 2006
Motorola and Arizona State University Advance Sensing Capabilities of Carbon Nanotubes
Motorola Labs, the applied research arm of Motorola, Inc. (NYSE: MOT), and Arizona State University today announce a key advancement in the use of Single-Walled Carbon Nanotubes (SWNTs) in Field Effect Transistors (FETs) to sense biological and chemical agents. Together, the research teams have developed a method to functionalize SWNTs with peptides to produce low-power SWNT-FETs that are highly sensitive and can selectively detect heavy metal ions down to the parts-per-trillion level.
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The flip side of using carbon nanotubes for environmental pollutants removal
Carbon nanomaterials have been studied as superior sorbents for their potential environmental applications to remove pollutants such as organic pollutants, metals, fluorides and radionuclides.
Most of these studies focused on the adsorption process and few dealt with the interfacial interactions of organic contaminants with carbon nanomaterials in aqueous media. However, understanding their desorption behavior as well is critical to evaluating environmental and health impacts of carbon nanomaterials.
Unlocking the secrets of stickiness
"We can make newer and better materials," said David Fowler, an epoxy expert and engineer at the University of Texas. "I suspect from nanotechnology we'll probably come up with a new generation of adhesives."
A.T. Charlie Johnson, a physicist at the University of Pennsylvania, mixed tiny carbon nanotubes into epoxy. The material got somewhat stronger, and its ability to conduct heat changed, he said.
A.T. Charlie Johnson, a physicist at the University of Pennsylvania, mixed tiny carbon nanotubes into epoxy. The material got somewhat stronger, and its ability to conduct heat changed, he said.
Developing seeds for growing whole gardens of identical single wall carbon nanotubes
In the Dec. 12 issue of the weekly Journal of the American Chemical Society, the researchers report invention of a method for mass-producing identical copies of SWCNTs. It starts with a “seed” SWCNT of the desired type.
University of Cincinnati Researchers Grow Their Longest Carbon Nanotube Ever
In conjunction with First Nano (FN), a division of CVD Equipment Corporation, UC has grown an array on FN’s EasyTube Carbon Nanotube system that is longer than 7 mm.
"The harmonious combination of substrate, alloy catalyst and process conditions was found to consistently produce nanotube arrays more than 7 mm long” says Professor Vesselin Shanov, co-director of Smart Materials Nanotechnology Laboratory at the University of Cincinnati (UC).
"The harmonious combination of substrate, alloy catalyst and process conditions was found to consistently produce nanotube arrays more than 7 mm long” says Professor Vesselin Shanov, co-director of Smart Materials Nanotechnology Laboratory at the University of Cincinnati (UC).
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