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using acetylene gas to deposit carbon nanotubes on pieces of silicon. Schindall says that the technology isn't much different from the kind used to produce microchips, and so mass production shouldn't be too difficult. Still, he said, ``It's one thing to postulate it, but that's a long way from being commercially viable and competitive in price." Schindall

The researchers' prototype supercapacitor produced a power density of 30 kilowatts per kilogram, which is seven and a half times the power of today's commercial supercapacitors, according to the researchers. Other researchers have achieved power densities of 20 kilowatts per kilogram, but they use more expensive single-wall carbon nanotubes and a fabrication process that required heating, according to the researchers.

The process to make the multi-wall nanotube supercapacitor film is simple, and thus potentially inexpensive. The researchers deposited high concentrations of nanotubes suspended in liquid on nickel films and dried them at room temperature. The nanotubes ended up densely packed and partially aligned.

The super capacitors could be ready for practical use within one to five years, according to the researchers. The work appeared in the February 1, 2005 issue of Nanotechnology.

Scientists have long known of the remarkable electro-mechanical properties of carbon nanotubes. They are 100 times stronger than steel, one-third the weight of aluminum and extremely conductive of both heat and electricity. This makes them extremely attractive for broad-based use, with the potential to augment or replace many current materials in end-user products.

(Nanowerk News) Nissan opened a facility to explore cutting-edge science like nanotechnology in its quest for environmentally friendly vehicles. The research at the new facility, the Nissan Advanced Technology Center, will include making more efficient batteries for hybrid cars, including using nanotechnology in the production of lithium-ion batteries.

An estimated $13 billion worth of nanotech-based products - including paints and cosmetics - were sold globally in 2004. Some projections expect that to grow to several trillion dollars' worth of products by 2014. It's an explosive development that affects the entire planet.


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Craig Olson

Sandia National Labs




June 25th, left vmail


Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin company, for the U.S. Department of Energy’s National Nuclear Security Administration. Sandia has major R&D responsibilities in national security, energy and environmental technologies, and economic competitiveness.


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Shape-engineerable and highly densely packed carbon nanotubes
Nanowerk LLC - Honolulu,HI,USA
Carbon nanotube solid formed into various shapes from lithographically patterned catalyst islands. (Images: AIST) The newly developed carbon-nanotube solid ...
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