Self-organisation of ordered ensembles of nanoparticles upon laser-controlled deposition of atomsстатья
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Дата последнего поиска статьи во внешних источниках: 29 ноября 2013 г.
Аннотация:A review of experiments is presented on the prepa-
ration of quasi-ordered ensembles of nanoparticles under the
action of low-intensity laser radiation on the process of low-
temperature deposition of atoms on the isotropic surface of a
solid. The mechanism of cooperative nucleation of ordered
ensembles of nanoparticles is developed which is based on the
concept of photostimulated migration of surface defects
(adatoms and dimers) and their elastic interaction with
each other resulting in the development of the surface defect-
deformation instability involving surface quasi-Rayleigh
waves. The mechanism of monochromatisation of particles
over their size under the action of low-intensity laser radiation
during the growth of nanoparticles, which appears due to the
dependence of the local feld inside a nanoparticle on its size
and shape, is also considered. The theoretical results agree
with the experimental data on the preparation of quasi-
hexagonal ensembles of nanoparticles upon low-temperature
laser-controlled deposition of Ga atoms on the end of a silica
fibre