Material behavior under extreme domain constraint in laser-assisted surface nanostructuring
C Li and LJ Zhang and Y Li and XW Wang, PHYSICS LETTERS A, 380, 753-763 (2016).
Using systematic atomistic modeling, the objective of this study is to explore the nanoscale tip confinement effect in near-field surface nanostructuring. It is to provide important knowledge base for the understanding and design of tip-based manufacturing at the nanoscale. Our result reveals that the number of ablated-out atoms decreases significantly due to the tip-confinement. Tip apex oscillation occurs because of tip interaction with the substrate. The dynamic nanostructuring process and final surface structure are strongly affected by tip-substrate distance and laser fluence. When the tip- substrate distance is smaller, it takes a longer time for the substrate to cool down and solidify. (c) 2015 Elsevier B.V. All rights reserved.
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