Tetraethyl orthosilicate is the chemical compound with 3 Safety
the formula Si(OC2 H5 )4 . Often abbreviated TEOS, it is a
colorless liquid that degrades in water. TEOS is the ethyl Although nontoxic to ingestion, TEOS vapor is hi
Silica redirects here. For other uses, see Silica (disam- application of fumed silica are all dierent from those of
Silicon dioxide, also known as silica (from the Latin
silex), is a chemical compound that is an ox
Gallium arsenide (GaAs) is a compound of the ele- Oxidation of GaAs occurs in air and degrades performents gallium and arsenic. It is a III-V direct bandgap mance of the semiconductor. The surface can be passisemiconductor with a zinc ble
ments in surface chemistry, specically his investigation
of the interaction between carbon monoxide molecules
and platinum surfaces.
2 Surface chemistry
Surface chemistry can be roughly dened as the study of
chemical reactions at interface
First ionization energy [eV]
2. IEs decrease as one moves from down any given
Alkaline earth metal
This article is about the synchrotron, a particle accelerator. For applications of the synchrotron radiation produced by cyclic particle accelerators, see synchrotron
A synchrotron is a particular type of cyclic particle
For other uses, see Monochrome (disambiguation).
Monochrome describes paintings, drawings, design,
The Eiel Tower during the Exposition Universelle (1889) for
which the tower was built
A photograph of a parrot rendered with a monochrome pale
method was developed originally for gas-phase molecules
in 1962 by David W. Turner, and other early workers
included David C. Frost, J. H. D. Eland and K. Kimura.
Later, Richard Smalley modied the technique and used
a UV lase
Micron redirects here. For other uses, see Micron
70 to 180 m thickness of paper
Microscale redirects here.
For other uses, see
For more examples of things measuring between ten and
X-ray photoelectron spectroscopy
ESCA redirects here. For the grape disease, see Esca
X-ray photoelectron spectroscopy (XPS) is a surface-
(Z) of 3 (lithium) and above. It cannot easily detect
hydrogen (Z = 1) or helium (Z = 2).