adatom


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adatom

[′ad‚ad·əm]
(physical chemistry)
An atom adsorbed on a surface so that it will migrate over the surface.
References in periodicals archive ?
Pettenkofer, "The "adatom model" of SERS (Surface Enhanced Raman Scattering): The present status," Surface Science, vol.
The deposition rate has to be relatively low to provide a long adatom diffusion time [42], and accordingly, the growth of the nanowires is slow (typically it takes ten minutes to grow a ~10 [micro]m nanowire) [38, 86, 88].
These phenomena can be explained as follows: with increase of the Cu target power, the surface adatom's energy and mobility were further increased, which forced them to move effectively due to ion bombardment compared with lower or no Cu target sputtering power; these movement particles would fill the voids between grains and interrupted the growth of large column structure; a higher deposition rate induces more Cu atoms, arriving at the surface of the substrate per unit time, and it is certainly producing more heterogeneous nucleation sites, resulting in the grain size refinement [27].
Ishii, "Migration of adatom adsorption on graphene using DFT calculation," Solid State Communications, vol.
One is the adsorptive sites and the other is the height between the adatom and substrate.
Terakura, "Effect of nitrogen doping on the migration of the carbon adatom and monovacancy in graphene," The Journal of Physical Chemistry C, vol.
The reverse of (4), generates O atoms that are on the crystal surface (adatom intermediate) upon exposing defective surfaces to [O.sub.2]~ (g).
The 2 x 2 surface is considered the most stable surface [19], while a 2 x 2 Ga adatom model is thermodynamically favored under moderately Garich conditions [20].
One such visible atom is a single oxygen atom that comes to rest on a titanium atom, called an "adatom".
GLAD combines a collimated vapor stream, low adatom mobility, and computer-controlled substrate motion to form columnar thin films that can be sculpted into a variety of nanostructures, including vertically aligned nanorods, helices, and chevrons.
Self-shadowing also implied that the newly deposited and weakly bound atoms, or adatom, mobility was significantly low and provided a means to help engineer the morphology by finding a means to either increase or decrease the mobility.
(JAV606) RICHARD BARTON, CEO of ADATOM.COM INC (ADTM), describes the company's business and its background; prospects for the industry, with positive and negative trends; competitive threats; strategic opportunities for the firm including its marketing plans and acquisition potential; management strength and organization; and the financial prospects of the firm looking forward.