Heat process used to remove stress, crystallize or render
deposited material more uniform.
Anode
The electrode in an electrochemical cell or galvanic couple that
experiences oxidation, or gives up electrons.
Arrhenius equation
The equation representing the rate constant as k = AeEa/RT
where A represents the product of the collision frequency and a steric
factor, and eEa/RT is fraction of collisions with sufficient
energy to produce a reaction.
ASIC
Application-specific integrated circuit; an IC designed for a
custom requirement.
Atomic mass unit (a.m.u.)
A unit of mass used to express relative atomic masses.
It is equal to 1/12 of the mass of an atom of the isotope carbon-12 and
is equal to 1.66033x10-27 kg
Atomic number (also proton number Z)
The number of protons within the atomic nucleus of a chemical element.
Atomic weight
The weighted average mass of the atoms in a naturally occurring
element.
Austenite
Face-centered cubic iron; also iron and steel alloys that have the FCC
crystal structure.
Avogadro's number
The number of atoms in exactly 12 grams of pure 12C, equal to
6.022 × 1023.
Band gap energy (Eg)
For semiconductors and insulators, the energies that lie between
the valence and conduction bands; for intrinsic materials,
electrons are forbidden to have energies within this range.
