superconductors plug ‘terahertz gap’

Ulrich Welp at Argonne National Laboratory and colleagues have discovered a simple way to synchronize the phase of these “intrinsic” Josephson junctions in high-temperature superconductors to emit milliwatts of power at frequencies up to 0.85 THz. Schematic of the terahertz-source, which was fabricated on the top of an atomically layered superconducting crystal. The applied current …

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Nantero’s newest NRAM promise is for 2008

Nantero is promising that NRAM could appear in consumer goods in 2008 However, they have previously promised 2005 and 2007. The thought of introducing filthy carbon nanotubes into an ultra-sensitive fab has blocked the rise of so-called NRAM or Nano Random Access Memory. Thanks, however, to a refined cleansing process and relentless browbeating start-up Nantero …

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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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