Roughening transition as a driving factor in the formation of self.

摘要: Based on the Monte Carlo kinetic method, we investigated formation mechanisms of periodical modulations arising along length one-dimensional structures. The evolution initially cylindrical nanowires/slabs at temperatures lower than their respective melting can result either in breakup into single nanoclusters or stable states with pronounced cross section. Such configurations, observed a number experiments, are excited wavelengths that below critical value for development classical Rayleigh instability. We show modulation subcritical mode corresponds to appearance roughening transition quasi-one-dimensional surface nanowires/slabs. Since arise is possible only certain facets metals given crystal structure, short-wavelength systems, as shown our work, be realized (i) proper orientation nanowire/slab axis providing spontaneous its lateral surface, (ii) by method activating diffusion atoms external impact (irradiation an electron beam contact cold plasma), which stimulates without significant heating nanowire. results obtained cases BCC and FCC lattices used controlled synthesis ordered structures use optoelectronics ultra-large-scale integrated circuits.