| Anneal |
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. |