Quantum Well (2 of 2) (IMAGE)
Caption
A schematic atomic diagram of a quantum well made from amorphous carbon layers. The blue atoms represent amorphous carbon with a high percentage of diamond-like carbon. The maroon atoms represent amorphous carbon which is graphite-like. The diamond-like regions have a high potential (diamond is insulating) while the graphite-like regions are more metallic. This creates a quantum well as electrons are confined within the graphite-like region due to the relatively high potential in the diamond-like regions. The maroon chains through the diamond-like regions represent polymeric chains, a feature which is unique to carbon superlattices. Superlattices are made up of a series of quantum wells. The green atoms represent nitrogen impurities.
Credit
Wits University
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