Femtosecond laser ablation of chalcogenide glass: explosive formation of nano-fibres against thermo-capillary growth of micro-spheres

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/193604

Title: Femtosecond laser ablation of chalcogenide glass: explosive formation of nano-fibres against thermo-capillary growth of micro-spheres
Author(s): Juodkazis, Saulius; Misawa, Hiroaki; Louchev, Oleg A; Kitamura, Kenji
Abstract: Formation of nano-fibres ranging from 30 to 300 nm in diameter and exceeding the length of one millimetre was observed during explosive ablation of As2S3 glass by femtosecond pulses at high fluence (>5 J cm−2) irradiation of the 800 nm wavelength, 160 fs duration pulses in air. Spheres of up to several microns in diameter were also found to form, competing with nano-fibre formation and significantly deteriorating their morphology. Theoretical analysis of thermo-capillary and heat exchange mechanisms of the fibre formation predicts conditions under which the good nano-fibre morphology can be preserved.
Publication type: Journal article
Source: Nanotechnology, Vol. 17, no. 19 (Oct 2006), pp. 4802-4805
Publication year: 2006
FOR Code(s): 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics; 0904 Chemical Engineering; 1007 Nanotechnology
Keyword(s): Chalcogenide glass; Femtosecond pulses; Irradiation; Microspheres; Nano-fibres; Thermo-capillary growth
Publisher: Institute of Physics Publishing
ISSN: 0957-4484
Publisher URL: http://dx.doi.org/10.1088/0957-4484/17/19/003
Peer reviewed