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Different regimes of viscous melt flow in laser ablation: from "clean" ablation to nanostructuring
General Physics Institute of the Russian Academy of Science.
Laboratorie de Physicochimie Moléculaire, CNRS, Université de Bordeaux.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Product and Production Development.
2006 (English)In: High-Power Laser Ablation VI: 7 - 12 May 2006, Taos, New Mexico, USA ; [SPIE's International Symposium on High-Power Laser Ablation VI] / [ed] Claude R. Phipps, Bellingham, Wash: SPIE - International Society for Optical Engineering, 2006, 9-23 p.Conference paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
Bellingham, Wash: SPIE - International Society for Optical Engineering, 2006. 9-23 p.
Series
, Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X ; 6261
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-38979DOI: 10.1117/12.669515Local ID: d8bdbf80-dd14-11db-9cae-000ea68e967bISBN: 0-8194-6326-4OAI: oai:DiVA.org:ltu-38979DiVA: diva2:1012487
Conference
SPIE's International Symposium on High-Power Laser Ablation : 07/05/2006 - 12/05/2006
Note
Validerad; 2006; 20070328 (cira)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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