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Monday, January 28, 2013

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Toward 2-D devices: Single-atom-thick patterns combine conductor and insulator

Posted: 27 Jan 2013 10:42 AM PST

Scientists have created a process to make patterns in atom-thick layers that combine a conductor -- graphene -- and an insulator -- hexagonal boron nitride. The process may lead to new possibilities for two-dimensional electronics.

Demagnetization by rapid spin transport

Posted: 27 Jan 2013 10:42 AM PST

The fact that an ultrashort laser pulse is capable of demagnetizing a ferromagnetic layer in a jiffy has been well-known since approximately 1996. What we don't yet understand, however, is how exactly this demagnetization works. Now, physicists have shown that it turns out not to be the light pulse itself that prompts demagnetization.

Accelerating neutral atoms on a table top

Posted: 27 Jan 2013 10:42 AM PST

Conventional as well as compact laser-based particle acceleration schemes hinge on accelerating electric fields and are therefore ineffective for neutral atoms, which do not respond to these fields. Researchers have now generated a table-top mega-electron-volt neutral atom source. The technique involves the stripping of eight electrons per Argon atom in a cluster, accelerate the ions and subsequently put back the electrons into the ions with 100 percent conversion efficiency.

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