Making cheaper, stronger and better carbon nanotubes without metal catalysts

NASA Goddard Space Flight Center has made a major step forward in reducing the cost of manufacturing single-walled carbon nanotubes (SWCNTs). Most manufacturing methods, which use a metal catalyst to form the tubes, have several drawbacks that have impeded development of SWCNTs’ numerous applications. NASA researchers have discovered a simple, safe, and inexpensive method to …

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Silicon spintronics closer for cheap continuation of Moore’s law

From EEtimes, Naval Research Laboratory (NRL) scientists will next month describe a technique that would allow spintronics to be inserted into the standard silicon CMOS processes using ferromagnetic materials similar to those already used for magnetic random access memory. Our demonstration showed a 30 percent polarization of the injected electrons, which is not bad considering …

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Augmenting soldiers

Wired looks at DARPA’s human soldier augmentation programs – Cooling hands helps endurance. The reason is that muscles don’t wear out because they use up stored sugars but because they get to hot. Cooling helps overclock the body. – Working to suspend injured soldiers through oxygen depravation. Mice were give a whiff of hydrogen sulfide …

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Cooling technology and ultimate limits of computing

In Dec, 2005, Fujitsu announced that they were able to connect carbon nanotube bumps to the miniature electrode of a high power transistor. Carbon nanotubes have thermal conductivity of 1400W/(m-K) – a level much higher than that of metal(4), and because it is possible to connect carbon nanotube-based bumps very near to the heat-generating miniature …

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