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Proceedings Paper

Different regimes of viscous melt flow in laser ablation: from clean ablation to nanostructuring
Author(s): Vladimir N. Tokarev; Sylvain Lazare; Alexander F. H. Kaplan
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Paper Abstract

The paper reviews recent results on modeling a viscous liquid flow driven by ablation pressure. Based on the analysis of the Navier-Stokes equation various strongly different manifestations of this phenomenon are explained. These are: (i) a "clean" laser ablation, when laser spot has a clean sharp spot border, free from a re-solidified melt dross; (ii) a new form of material removal in laser ablation - expulsion on a poly(methyl methacrylate) target of long (up to 1 mm) nanofibers with a radius about 150-200 nm to the exterior of the spot under the action of a single pulse of KrF excimer laser; and (iii) a new way of laser surface nanostructuring - the formation of a surface foam having a structure of micro-pores interconnected with nanofilaments of diameters about 100 nm as a result of single pulse KrF laser irradiation of biopolymer films.

Paper Details

Date Published: 7 June 2006
PDF: 15 pages
Proc. SPIE 6261, High-Power Laser Ablation VI, 626109 (7 June 2006); doi: 10.1117/12.669515
Show Author Affiliations
Vladimir N. Tokarev, A.M. Prokhorov, General Physics Institute (Russia)
Sylvain Lazare, Lab. de Physicochimie Moléculaire, CNRS, Univ. de Bordeaux I (France)
Alexander F. H. Kaplan, Lulea Univ. of Technology (Sweden)

Published in SPIE Proceedings Vol. 6261:
High-Power Laser Ablation VI
Claude R. Phipps, Editor(s)

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