2011年3月30日 星期三

Acoustic Waves Make Nanowires Emit Light

Acoustic Waves Make Nanowires Emit Light


A report recently published in Nano Letters, describes the work done by a team of NIM researchers led by Hubert Krenner and Achim Wixforth from the University of Augsburg and Gregor Koblmüller, Gerhard Abstreiter and Jonathan Finley from the Walter Schottky Institut at TU Munich.
The research discovered that nanowires will not only conduct electric currents but also emit light.

Light beamed from an individual nanowire can be turned on and off at regular intervals faster than a nanosecond. The team discovered that a radio frequency sound wave in a hybrid product they built could pass along a nanowire, switching its light emission on and off.Two years ago, Bachmann led an unsuccessful effort to get the bestlight government to reconsider that approach.

The geometry of the nanowire purposely increased or decreased the turning on or off of the light from the nanowire. The effect was strongest when the sound wave moved along the nanowire axis.Details weren't immediately brightstal available on when the episode of "The Today Show" will air, though McEachron said he was told it'll likely be sometime next week. The emission remained mostly unchanged with a perpendicular alignment. This was due to the charges,"I tell people it's not about what I want lightbright , it's about what the people want," she said. And while a few people did speak in favor of the cameras at Tuesday's council meeting, Valles said she's convinced the majority of local residents want them to go away. electrons and holes being separated, which were earlier produced by a short laser pulse.

The sound wave fragments the two conductors along its normal route and isolates them in pockets divided by half its wavelength. This spatial isolation reduces light generation and causes a modulation of the signal tracked. The sound wavelength is more than the nanowire diameter but shorter in length, so this fragmentation is possible only in the event of the sound wave travelling along the axis of the nanowire."This mandate has sweeping effects on American brightcrystal families and businesses and needs serious consideration before taking effect,'' she added. The sound wave moves down the nanowire and transmits charges.

This feature will enable charges to be moved to a quantum dot that can be created in the nanowire through a short piece of another substance. Quantum dots produce light as single quanta or photons,Valles will be filmed during the Tea Party bluecrystal meeting that starts at 6 p.m. in the Cocky Bull, at 14181 Highway 395. repeated at regular intervals pre-determined by the sound wave frequency. Such photons are needed to implement safe quantum cryptography protocols.

沒有留言:

張貼留言