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Latest Spintronics Stories

2012-01-17 10:55:51

Measurements at the Vienna University of Technology deepen our understanding of quantum uncertainty Heisenberg's Uncertainty principle is arguably one of the most famous foundations of quantum physics. It says that not all properties of a quantum particle can be measured with unlimited accuracy. Until now, this has often been justified by the notion that every measurement necessarily has to disturb the quantum particle, which distorts the results of any further measurements. This, however,...

2012-01-12 12:16:11

Study represents step toward unified theory for quantum phase transformation New evidence this week supports a theory developed five years ago at Rice University to explain the electrical properties of several classes of materials -- including unconventional superconductors -- that have long vexed physicists. The findings in this week's issue of Nature Materials uphold a theory first offered in 2006 by physicist Qimiao Si, Rice's Harry C. and Olga K. Wiess Professor of Physics and...

2012-01-09 19:45:20

Rice University researchers tag excitons in search for hues' clues Rice University researchers have figured out what gives armchair nanotubes their unique bright colors: hydrogen-like objects called excitons. Their findings appear in the online edition of the Journal of the American Chemical Society. Armchair carbon nanotubes — so named for the "U"-shaped configuration of the atoms at their uncapped tips — are one-dimensional metals and have no band gap. This means...

2011-12-19 13:05:16

As electrons move past atoms in a solid, their charge distorts the nearby lattice and can create a wave. Reciprocally, a wave in the lattice affects the electrons motion, in analogy to a wave in the sea that pushes a surfer riding it. This interaction results in a thermoelectric effect that was first observed during the 1950´s and has come to be known as phonon-drag, because it can be quantified from the flow of lattice-wave quanta (phonons) that occurs over the temperature gradient....

2011-12-15 17:16:17

Maximum theoretical efficiency of solar cells could increase from 31 to 44 percent The efficiency of conventional solar cells could be significantly increased, according to new research on the mechanisms of solar energy conversion led by chemist Xiaoyang Zhu at The University of Texas at Austin. Zhu and his team have discovered that it's possible to double the number of electrons harvested from one photon of sunlight using an organic plastic semiconductor material. "Plastic...

2011-11-18 03:32:58

For the first time, engineering researchers have been able to watch in real time the nanoscale process of a ferroelectric memory bit switching between the 0 and 1 states. Ferroelectric materials have the potential to replace current memory designs, offering greater storage capacity than magnetic hard drives and faster write speed and longer lifetimes than flash memory. Replacing dynamic random access memory–the short-term memory that allows your computer to operate–with...

2011-11-08 04:20:02

Micron and Singapore's A*STAR Data Storage Institute to Develop Spin Transfer Torque Magnetic Random Access MemorySingapore, Nov 8, 2011 - (ACN Newswire) - Micron Technology, Inc., and Singapore's A*STAR Data Storage Institute (DSI) jointly announced today that the two companies have entered into an agreement to collaborate on the development of spin transfer torque magnetic random access memory (STT-MRAM), a promising alternative non-volatile memory technology for next-generation...


Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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