Noun used with modifier

• aluminum: For example, an extremely thin layer of gallium arsenide can be sandwiched between two layers of aluminum gallium arsenide.

• aluminum: In modulation doping, facing layers of gallium arsenide and aluminum gallium arsenide squeeze electrons into an essentially two-dimensional electron gas, or 2DEG.

• indium: Semiconductor detectors are usually used: the most common are silicon, lead sulfide, indium antimonide or indium gallium arsenide.