Aerobic bacteria chew up the ammonia and turn it first into nitride and then to nitrate.
Yet even at this early stage he thinks gallium nitride-on-silicon LEDs would make commercial sense.
Most of the white LEDs now on the market are based on gallium nitride.
Nakamura created the LED out of gallium-nitride, which became the semiconductor for making white LED lights today.
Gallium Arsenide and Gallium Nitride are preferred for LEDs, certain photovoltaics, and some very high frequency radio applications.
The new work suggests that a preparation of boron nitride could outperform many nanomaterials and more traditional approaches.
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Boron nitride, or "white graphene", is similar to its namesake: sheets of atoms laid out like a chain-link fence.
BBC: 'White graphene' soaks up pollutants and can be re-used
His group is trying to make nano-electrical components, and has built transistors based on tubes made of boron nitride.
Nitride semiconductors have attracted attention for their potential applications in highly efficient optical and power devices for energy saving.
The key to the system is the application of a nitride semiconductor which makes the system simple and efficient.
That means the electronic applications seem likely to go to boron nitride and other non-carbon tubes with similar properties.
Kim said his staff has figured out a way to create the desirable combination of gallium-nitride top layer on a gallium-nitride substrate.
The files detail an amplifier device using gallium nitride (GaN), technology that has both commercial and potential military uses, according to the FT.
We found firstly that a nitride semiconductor has the capability to excite the electrons with enough high energy for the CO2 reduction reaction.
Gallium nitride, or GaN, converts electrical impulses to light and is grown on the surface of wafers made from sapphire or silicon carbide.
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But the biggest cost reduction will come from breakthroughs like that recently made by the Centre for Gallium Nitride at Cambridge University, England.
At present these LEDs are made in machines similar to those used to make silicon chips, by depositing layers of gallium nitride on sapphire-based wafers.
LEDs are currently made with a crystalline material called gallium nitride.
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And, whereas most Gallium Nitride (GaN) LEDs on the market measure just two inches in size, Sammy's technique could result in displays about 400 times larger.
ENGADGET: Samsung breakthrough could turn your window pane into a big ol' LED
Holding a doctorate in electrical engineering, Shane Todd worked for his prominent employer, helping to develop faster, more powerful semiconductors by using the compound gallium nitride.
The system with a nitride semiconductor and a metal catalyst generates mainly formic acid from CO2 and water with light at a world's top efficiency of 0.2%.
Because the atomic lattice structure of gallium nitride is better matched to sapphire than it is to silicon, making LEDs on silicon without distortions has proved extremely tricky.
Gallium nitride is a semiconductor used to create bright-blue LEDs.
The CO2 reduction takes place on a metal catalyst at the opposite side of nitride semiconductor photo-electrode.(See Fig. 1) The metal catalyst plays an important role in selecting and accelerating the reaction.
After his death, Todd's parents found that his hard drive contained a proposal between the Singapore outfit and a prominent Chinese telecom firm, Huawei, to build a powerful amplifier using gallium nitride technology.
Gallium-nitride is manmade and not found in nature, and historically, LEDs are made by growing a gallium-nitride layer on top of a base material, which is typically sapphire or, more recently, silicon carbide.
These porous sheets, which together form a coarse white powder, vastly outperformed sheets that did not have the pores, and commercially available chunks of boron nitride that is not made up of the tiny sheets.
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What Transphorm is doing is making new kinds of power conversion devices, based on a material called gallium nitride (a substance best known for its use in LED lighting), which it embeds in modules and sells to equipment manufacturers.
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Today, the Samsung Advanced Institute of Technology announced that its engineers have successfully created "single crystalline Gallium Nitride on amorphous glass substrates" -- an achievement that would allow the manufacturer to produce jumbo-sized LEDs from normal glass, including window panes.
ENGADGET: Samsung breakthrough could turn your window pane into a big ol' LED
Samsung's 7.1 Channel Home Theater System (model HT-F9750W) was created to be the perfect counterpart for Samsung's 2013 TVs, with a Gallium Nitride (GaN) amplifier that delivers pure sound, and design and usability features that bring home a totally seamless experience.
ENGADGET: Samsung introduces its CES audio hardware, claims a world first
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