Sentences with phrase «which ultrathin layers»
The «teats» are actually receptacles containing aluminium, gallium and arsenic; the «udders» are high - vacuum reaction chambers in which ultrathin layers of crystal are grown on circular wafers of gallium arsenide, 75 or 100 millimetres across.
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The scientists first grew carpets of microscopic wires of gallium nitride, a light - emitting crystalline material, on an ultrathin mesh of graphene, which is a layer of carbon atoms that is flexible, conductive and tough.
The team now reports that graphene, with its ultrathin, Teflon - like properties, can be sandwiched between a wafer and its semiconducting layer, providing a barely perceptible, nonstick surface through which the semiconducting material's atoms can still rearrange in the pattern of the wafer's crystals.
The study group has created ultrathin sheets composed of black phosphorous layers, which feature strong light absorption in the near - infrared as well as ultraviolet and visible light ranges, combined with lanthanum titanate layers.