Molecular Beam Epitaxy (MBE) is an Ultra High
Vacuum (UHV)-based technique for producing high quality
epitaxial structures with monolayer (ML) control.
In MBE, ultra-pure elements such as gallium and arsenic are
heated in separate effusion cells until they each slowly begin
to evaporate. The evaporated elements then condense on the
wafer, where they may react with each other. In the example of
gallium and arsenic, single-crystal gallium arsenide is formed.
read more...