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-----Original Message-----
From: Dan Crowe
Sent: Wednesday, August 27, 2003 9:58 AM
Subject: Re: Missing term
"Epitaxy" is another word associated with phase transitions from gas =
to solid; however, liquid-phase epitaxy is a transition from a liquid=
to a solid. I think that the appropriate phrase is "vapor-phase epi=
taxy". Specific epitaxial processes are called "molecular-beam epita=
xy", "chemical-beam epitaxy", and similar phrases with additional mod=
ifiers. Epitaxy implies a finely-controlled chemical composition of =
the solid formed; sublimation from a gas to a solid does not necessar=
ily imply a precise chemical composition. Epitaxy also implies the f=
ormation of a thin layer; sublimation from a gas to a solid could for=
m a thicker solid.