Femtosecond Laser Synthesis of Polymorphic Diamond from Highly Oriented Pyrolytic Graphite

Abstract:

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We synthesized polymorphic diamond directly from highly oriented pyrolytic graphite (HOPG) using femtosecond laser driven shock wave without catalyst. A femtosecond laser pulse (wavelength: 800 nm, pulse width: 120 fs, intensity: 2×1015 W/cm2) was irradiated onto the HOPG surface in air. Crystalline structures of HOPG after the laser irradiation were analyzed using the synchrotron X-ray at the BL13XU in the SPring-8. We found that the hexagonal diamond exists in the HOPG which was irradiated by the femtosecond laser normal to the basal plane.

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

2349-2352

DOI:

10.4028/www.scientific.net/MSF.561-565.2349

Citation:

T. Sano et al., "Femtosecond Laser Synthesis of Polymorphic Diamond from Highly Oriented Pyrolytic Graphite", Materials Science Forum, Vols. 561-565, pp. 2349-2352, 2007

Online since:

October 2007

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Price:

$35.00

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