Roughening transition as a driving factor in the formation of self-ordered one-dimensional nanostructures

Gorshkov, Vyacheslav N, Tereshchuk, Vladimir V and Sareh, Pooya ORCID: 0000-0003-1836-2598 (2021) Roughening transition as a driving factor in the formation of self-ordered one-dimensional nanostructures. CrystEngComm, 23 (8). pp. 1836-1848.

Text
d0ce01404d_(Accepted Manuscript).pdf - Author Accepted Manuscript
Download (3MB) | Preview

Official URL: http://dx.doi.org/10.1039/D0CE01404D

Abstract

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

Item Type:	Article
Additional Information:	27 pages, 9 figures, Supplementary materials
Uncontrolled Keywords:	cond-mat.mes-hall, cond-mat.mes-hall, cond-mat.mtrl-sci, physics.chem-ph, physics.comp-ph
Divisions:	Faculty of Science and Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	26 Apr 2021 07:02
Last Modified:	18 Jan 2023 22:50
DOI:	10.1039/D0CE01404D
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3120415