ScienceDaily: Top Technology News |
- Toward 2-D devices: Single-atom-thick patterns combine conductor and insulator
- Demagnetization by rapid spin transport
- Accelerating neutral atoms on a table top
| 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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