ScienceDaily: Top Technology News |
- NASA develops super-black material that absorbs light across multiple wavelength bands
- Researchers create extra-long electrical arcs using less energy
- 'Noise' tunes logic circuit made from virus genes
- Can metals remember their shape at nanoscale, too?
- NASA captures new images of large asteroid passing Earth
- Secrets of tunneling through energy barriers: How massless electrons tunnel through energy barriers in a carbon sheet called graphene
| NASA develops super-black material that absorbs light across multiple wavelength bands Posted: 08 Nov 2011 06:30 PM PST NASA engineers have produced a material that absorbs on average more than 99 percent of the ultraviolet, visible, infrared, and far-infrared light that hits it -- a development that promises to open new frontiers in space technology.  |
| Researchers create extra-long electrical arcs using less energy Posted: 08 Nov 2011 05:15 PM PST Photos taken by the researchers show plasma arcs up to 60 meters long casting an eerie blue glow over buildings and trees at the High Voltage Laboratory at the University of Canterbury in New Zealand.  |
| 'Noise' tunes logic circuit made from virus genes Posted: 08 Nov 2011 05:15 PM PST In the world of engineering, "noise" – random fluctuations from environmental sources such as heat – is generally a bad thing. In electronic circuits, it is unavoidable, and as circuits get smaller and smaller, noise has a greater and more detrimental effect on a circuit's performance. Now some scientists are saying: if you can't beat it, use it.  |
| Can metals remember their shape at nanoscale, too? Posted: 08 Nov 2011 07:46 AM PST Physicists have now visualized changes in shape memory materials down to the nanometric scale.  |
| NASA captures new images of large asteroid passing Earth Posted: 08 Nov 2011 04:06 AM PST NASA's Deep Space Network antenna in Goldstone, Calif. has captured new radar images of Asteroid 2005 YU55 passing close to Earth. The asteroid safely will safely fly past our planet slightly closer than the moon's orbit on Nov. 8. The last time a space rock this large came as close to Earth was in 1976, although astronomers did not know about the flyby at the time. The next known approach of an asteroid this size will be in 2028.  |
| Posted: 07 Nov 2011 12:54 PM PST Electrons moving in graphene behave in an unusual way, as demonstrated by 2010 Nobel Prize laureates for physics Andre Geim and Konstantin Novoselov, who performed transport experiments on this one-carbon-atom-thick material. A review article explores the theoretical and experimental results to date of electrons tunneling through energy barriers in graphene.  |
| You are subscribed to email updates from ScienceDaily: Top Technology News To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google Inc., 20 West Kinzie, Chicago IL USA 60610 | |
No comments:
Post a Comment