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Direct patterning in sub-surface of stainless steel using laser pulses |
Optics Express, Vol. 18, Issue 15, pp. 15990-15997 (2010)
http://dx.doi.org/10.1364/OE.18.015990
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Abstract
This paper reports for the first time on the direct creating microcavities in sub-surface of stainless steel using a single Nd:YAG laser pulse. The low peak power density is used in the process, which is in the order of 1 MW/cm2. The formation of the microcavities in the sub-surface of stainless steel is an evidence of volume expulsion during laser-metal interaction. Direct patterning in the sub-surface of stainless steel is demonstrated by realizing a series of microcavities to form a pre-designed pattern. Potential applications of sub-surface patterning in metal, such as security marking, micro-heater, micro-insulator and micro-sensor, are discussed.
© 2010 OSA
OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.3900) Materials : Metals
(220.4000) Optical design and fabrication : Microstructure fabrication
(140.3945) Lasers and laser optics : Microcavities
ToC Category:
Laser Microfabrication
History
Original Manuscript: May 11, 2010
Revised Manuscript: July 8, 2010
Manuscript Accepted: July 8, 2010
Published: July 13, 2010
Citation
Z. L. Li, T. Liu, C. C. Khin, A. C. Tan, L. E. Khoong, H. Y. Zheng, and W. Zhou, "Direct patterning in sub-surface of stainless steel using laser pulses," Opt. Express 18, 15990-15997 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-15-15990
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