Portmanteau word for an atom adsorbed onto the surface of a solid material
Adatom according to the TLK model.
An adatom is an atom that lies on a crystal surface, and can be thought of as the opposite of a surface vacancy. This term is used in surface chemistry and epitaxy, when describing single atoms lying on surfaces and surface roughness. The word is a portmanteau of "adsorbed atom". A single atom, a cluster of atoms, or a molecule or cluster of molecules may all be referred to by the general term "adparticle". This is often a thermodynamically unfavorable state. However, cases such as graphene may provide counter-examples.[1]
^Marian A. Herman; Wolfgang Richter; Helmut Sitter (2004). Epitaxy: Physical Principles and Technical Implementation. Springer. p. 322. ISBN 3-540-67821-2.
An adatom is an atom that lies on a crystal surface, and can be thought of as the opposite of a surface vacancy. This term is used in surface chemistry...
Surface diffusion is a general process involving the motion of adatoms, molecules, and atomic clusters (adparticles) at solid material surfaces. The process...
the formation energy for an adatom—ignoring any crystal relaxation—is calculated by subtracting the energy of an adatom from the energy of the kink atom...
vapor adatom with vacancy on the substrate surface. The BET model expands further and allows adatoms deposition on previously adsorbed adatoms without...
whether the CO2 methanation occurs by first associatively adsorbing an adatom hydrogen and forming oxygen intermediates before hydrogenation or dissociating...
behavior of adatoms on surfaces. The problems studied include adsorption-desorption phenomena, surface diffusion of adatoms and clusters, adatom-adatom interactions...
manipulation is typically applied to strongly bound adsorbates, such as metal adatoms on metal surfaces. The probability that the surface adsorbate moves the...
whether the CO2 methanation occurs by first associatively adsorbing an adatom hydrogen and forming oxygen intermediates before hydrogenation or dissociating...
particle". An adparticle that is a single atom may be referred to as an "adatom". Grunze, Michael; Weimer, Jeffrey J.; Kreuzer, Hans Jürgen, eds. (1988)...
thermodynamic equilibrium. In that case, the epitaxial growth is governed by adatom kinetics rather than thermodynamics, and 2D step-flow growth becomes dominant...
"adsorption on a flat surface" for studying the thermodynamics of nanoparticles. Adatom Cryo-adsorption Dual-polarization interferometry Fluidized bed concentrator...
volume) rather than the pressure. When arriving at a site of a surface, an adatom has three options. There is a probability that it will adsorb to the surface...
fewer other atoms, usually found as single atoms sitting on the surface ("adatoms"), but it is more difficult for higher coordinated atoms, i.e., those sitting...
by slow cooling. The 7×7 reconstruction is modeled according to a dimer-adatom-stacking fault (DAS) model constructed by many research groups over a period...
A bottom-up approach synthesizes the nanowire by combining constituent adatoms. Most synthesis techniques use a bottom-up approach. Initial synthesis...
Defect types include atom vacancies, adatoms, steps, and kinks that occur most frequently at surfaces due to the finite material size causing crystal...
Density functional theory simulations predict that depositing certain adatoms on graphene can render it piezoelectrically responsive to an electric field...
An overlayer is a layer of adatoms adsorbed onto a surface, for instance onto the surface of a single crystal. Adsorbed species on single crystal surfaces...
recently, the band gap in epitaxial silicene has been tuned by oxygen adatoms from zero-gap-type to semiconductor-type. With a tunable band gap, specific...
system: Li+ in "Ma 2" Electrosorption, underpotential deposition of metal adatoms or H: M+ + ze‾ + S ⇌ SM or H+ + e‾ + S ⇌ SH (S = surface lattice sites)...
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