Sentences with phrase «aluminum gallium»

The base contains gallium arsenide; the post, aluminum gallium arsenide; and the 200 - nanometer - thick microdisk cap, quantum dots of indium arsenide embedded in gallium arsenide.

They bonded a thin layer of indium phosphide, a compound that acts as a medium for the laser, onto silicon sheets by exposing both materials to a blast of hot, electrically charged oxygen atoms; the indium phosphide was spiked with aluminum gallium indium arsenide to give it added speed.

Ordinarily in such a system, electrons in gallium arsenide are repelled by aluminum gallium arsenide, and would not go through the barrier layer.

In other words, it is the internal structure itself that renders aluminum gallium nitride / gallium nitride HEMTs rad - hard.

Compared to similar aluminum gallium arsenide / gallium arsenide HEMTs, the gallium nitride - based HEMTs are ten times more tolerant of radiation - induced displacement damage.

Not exact matches

By 1988 he had developed excellent red and infrared LEDs by growing gallium aluminum arsenide on a gallium arsenide substrate.

«So if you want a material that will emit pure blue laser light for an LCD screen, instead of going in the laboratory and trying to figure out what combination of gallium, arsenic, aluminum, and three other components would give you the best blue light, you can make thousands of combinations of those components and automatically test each one to see which is the best,» says Johnson.

Likely materials include silicon - germanium, gallium and aluminum arsenide and certain oxide superlattices.

Physicist Tony Kent and his colleagues at the University of Nottingham in England managed to create such an amplifier from a thin, layered lattice made of two semiconductors, gallium arsenide and aluminum arsenide.

Hoffman and his colleagues crafted their metamaterial semiconductor by placing alternating 80 - nanometer - thick (one nanometer equals 3.94 x 10 - 8 inch) layers of indium gallium arsenide and indium aluminum arsenide atop an indium phosphide substrate 5.1 centimeters (two inches) in diameter.

To concentrate the energy of laser light to an even finer area, the team patterned aluminum dots of various sizes, from tens of micrometers down to 30 nanometers, across the surface of silicon, silicon germanium alloy, gallium arsenide, gallium nitride, and sapphire.

The metamaterial at the basis of this unusual optical response consists of a sequence of thin layers made of indium, gallium and arsenic on the one hand and aluminum, indium and arsenic on the other.

The latter stars exhibit weak helium lines, low rotational velocities, and excess amounts of gallium, strontium, yttrium, mercury, and platinum, as well as absences of such elements as aluminum and nickel.

TOXIC METALS Here is a list of toxic metals: Aluminum, Antimony, Arsenic, Barium, Beryllium, Bismuth, Cadmium, Chromium, Cobalt, Gadolinium, Gallium, Lead, Manganese, Mercury, Nickel, Palladium, Platinum, Polonium, Plutonium, Silver, Thallium, Tin, Thorium, Tungsten, Uranium and Vanadium.