Self-organized surface nanopatterning by ion beam sputtering

Details Self-organized surface nanopatterning by ion beam sputtering Self-organized surface nanopatterning by ion beam sputtering

2007-06-18

arxiv.org/abs/0706.2625v1

Physics

Condensed Matter

Materials Science

To appear in Lecture Notes on Nanoscale Science and Technology, edited by Z. Wang (Springer, Heidelberg)

Scientific paper

The production of nanopatterns on the surfaces of targets irradiated by ion beams at low and intermediate energies has developed during the present decade to a salient degree of control over the main pattern features. However, there is still a wide experimental scatter in the type and relevance of various dynamic interfacial properties induced by this technique as a function of system type and parameters. In parallel, diverse theoretical models exist that differ in their capabilities to reproduce such a wide range of experimental features. We provide an overview of the most recent studies of nanoripple and dot production by ion-beam sputtering, with special attention to the comparison between experiments and (continuum) models, and with a focus on those issues that remain open or, at least, ambiguous. These are perhaps more evident for the case of nanodot patterns on amorphizable targets than for the case of nanoripples due, possibly, to the relative novelty of the former. The pattern properties to be considered are those of potential increased technological importance, such as the variation of nanodot size with parameters like ion energy, target temperature and sputtering time (i.e., fluence), as well as the conditions under which the quality of the pattern order is enhanced, issues such as wavelength coarsening and order enhancement becoming relevant.

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