Power-law scaling regimes for solid-state dewetting of thin films

TitlePower-law scaling regimes for solid-state dewetting of thin films
Publication TypeJournal Article
Year of Publication2016
AuthorsZucker, RV, Carter, WCraig, Thompson, CV
JournalScripta Materialia
Volume116
Pagination143 - 146
Date Published2016/04/15/
ISBN Number1359-6462
KeywordsCapillary forces, capillary instabilities, Dewetting, Morphological evolution, Surface energy, Thin film
Abstract

The capillary force drives the edges of solid thin films to retract. The distance a film edge has retracted over time is usually fitted to a power law. However, experiments and numerical simulations suggest that edge retraction does not follow a power-law. In this work, a simple geometric model for edge retraction is presented that reproduces the retraction distance versus time scalings of simulations for both isotropic and highly-anisotropic films, and is consistent with experiments. The earliest time at which a power-law fit becomes a reasonable approximation is calculated as a function of substrate-film contact angle. (C) 2016 Elsevier Ltd. All rights reserved.

Short TitleScr. Mater.