Latest Gallium(III) arsenide Stories

2011-07-25 15:39:26

In an advance that could open new avenues for solar cells, lasers, metamaterials and more, researchers at the University of Illinois have demonstrated the first optoelectronically active 3-D photonic crystal. "We've discovered a way to change the three-dimensional structure of a well-established semiconductor material to enable new optical properties while maintaining its very attractive electrical properties," said Paul Braun, a professor of materials science and engineering and of chemistry...

2011-04-12 11:24:21

'Quantum coaxial cable' nanostructure efficiently harvests visible wavelength light using stable, high bandgap semiconductors A report, published in the March 14 edition of the Journal of Materials Chemistry, announced the successful fabrication and testing of a new type solar cell using an inorganic core/shell nanowire structure. Arrays of core/shell nanowires (described has "quantum coaxial cables") had previously been theorized as a potential structure that, while composed of chemically...

2011-02-25 22:53:01

Bochum physicists are constructing 0-dimensional systems Through his participation, the research team from Bochum, Duisburg-Essen, and Hamburg now has succeeded in an energy-state occupancy readout of those artificial atoms "“ using common interfaces to classic computers. This is a big step towards the application of such systems. They report about their findings in Nature Communications. One million instead of individual atoms In principle, the spin of electrons in individual atoms can...

2011-02-15 09:51:00

LOS GATOS, Calif., Feb. 15, 2011 /PRNewswire/ -- Amalfi® Semiconductor, a developer of high-performance, highly integrated CMOS RF and mixed-signal solutions, today announced that in its first year of production the company shipped more than 25 million CMOS 2G GSM/GPRS transmit module (TxM) integrated circuits (IC) to cellular handset manufacturers. Amalfi Semiconductor also announced that its fourth quarter 2010 shipments were used in more than 5% of worldwide 2G GSM/GPRS...

2011-01-26 10:01:59

Paul Preuss, Berkeley Lab Solar cells are made from semiconductors whose ability to respond to light is determined by their band gaps (energy gaps). Different colors have different energies, and no single semiconductor has a band gap that can respond to sunlight's full range, from low-energy infrared through visible light to high-energy ultraviolet. Although full-spectrum solar cells have been made, none yet have been suitable for manufacture at a consumer-friendly price. Now Wladek...

2010-12-08 21:59:59

Researchers use magnets to tune supercooled gallium arsenide semiconductors Physicists from Rice University and Princeton University have discovered how to use one of the information technology industry's mainstay materials -- gallium arsenide semiconductors -- as an ultrasensitive microwave detector that could be suitable for next-generation computers. The discovery comes at a time when computer chip engineers are racing both to add nanophotonic devices directly to microchips and to boost...

2010-12-07 08:00:00

CHARLOTTE, N.C., Dec. 7, 2010 /PRNewswire-FirstCall/ -- Goodrich Corporation (NYSE: GR) has been chosen by the Air Force Research Laboratory, Materials and Manufacturing Directorate, to develop solutions for its short wave infrared (SWIR) imaging sensors. A contract released under AFRL's Advanced Development of Protection Technologies (ADePT) program covers the investigation of approaches for SWIR detectors. Work will be performed by Goodrich's ISR Systems team in Princeton, NJ. According...

2010-10-04 16:35:02

Tokyo, Oct 4, 2010 - (JCN Newswire) - Fujitsu Limited and Fujitsu Laboratories Ltd. today announced the development of a power amplifier using gallium nitride (GaN)(1) High Electron Mobility Transistors (HEMT)(2) that has achieved the world's highest output performance of 1.3W for wireless communications in the millimeter-wave W-band(3), for which widespread usage is expected in the future. The new amplifier will offer transmission output equivalent to approximately 16 times that of existing...

2010-08-23 09:13:00

CHARLOTTE, N.C., Aug. 23, 2010 /PRNewswire-FirstCall/ -- Goodrich Corporation (NYSE: GR) has introduced the smallest SWaP (size, weight and power) shortwave infrared (SWIR) camera for unmanned vehicles. The camera weighs less than four and a half ounces and has a total volume of less than 4.9 cubic inches, making it suitable to fit on board almost any unmanned aerial or ground vehicle. Currently it is installed in the nosecone of a Raven hand-launched unmanned aerial system (UAS). The new...

Word of the Day
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'