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Chinese Optics 2011, 4(1) 46-52  ISSN: 2095-1531 CN: 1400/O4

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Keywords
liquid metal
surface
microstructure
nanosecond laser ablation
Authors

Formation of microstructure on liquid metal surface under nanosecond laser ablation

TARASENKO V F1, PANCHENKO A N1, BULGAKOVA N M3, SHULEPOV M A1, TEL'MINOV A E1, LI Dian-jun2, ZHANG Lai-ming2, JIANG Ke2, XIE Ji-jiang2

1. Institute of High Current Electronics Siberia Branch of the Russian Academy of Sciences,Tomsk 634055;
2. State Key Laboratory of Laser Interaction with Matter,Changchun Institute of Optics, Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
3. Institute of Thermophysics Siberia Branch of the Russian Academy of Sciences,Novosibirsk 630090,Russia

Abstract

Formations of stable micro-protrusions and microstructures on the surfaces of liquid metals during multipulse action of a UV-IR laser in different ambient gases was discovered for the first time. The rate of the structure formation was measured, which can reach 5-20 μm/pulse depending on the metal and ambient gas sort. Single micro-protrusions of 1-2 mm in length were formed with the diameter approximately two times greater than the focal spot size. The possibility to control the microstructure shape was shown and their potential applications were also discussed.

Keywords liquid metal   surface   microstructure   nanosecond laser ablation  
Received 2010-08-11 Revised 2010-10-13 Online:  
Fund:

Supported by Russian Foundation for Basic Research Project(No.09-08-00880)

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