Laser-assisted cell direct-write technique has been a promising biomaterial direct-write method. For safe and reproducible cell direct writing, cell injury due to process-induced external stress must be understood in addition to biological property research. The objective of this study is to model the thermoelastic stress wave propagation inside the coating in laser-assisted cell direct writing when vaporization and/or optical breakdown of coating materials is/are not available. It is found that a bipolar pressure pair, with peak magnitudes on the order of 1 MPa or higher, has been developed within a finite thin coating medium. Shorter duration laser pulses lead to higher thermoelastic stresses. This study will help to understand the photomechanical stress and its relevance with biomaterial damage in laser-assisted cell direct writing.
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e-mail: yongh@clemson.edu
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April 2011
Technical Briefs
Modeling of Thermoelastic Stress Wave in Laser-Assisted Cell Direct Writing
Wei Wang,
Wei Wang
Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634
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Yafu Lin,
Yafu Lin
Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634
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Yong Huang
Yong Huang
Department of Mechanical Engineering,
e-mail: yongh@clemson.edu
Clemson University
, Clemson, SC 29634
Search for other works by this author on:
Wei Wang
Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634
Yafu Lin
Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634
Yong Huang
Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634e-mail: yongh@clemson.edu
J. Manuf. Sci. Eng. Apr 2011, 133(2): 024502 (6 pages)
Published Online: March 14, 2011
Article history
Received:
August 26, 2009
Revised:
January 28, 2011
Online:
March 14, 2011
Published:
March 14, 2011
Citation
Wang, W., Lin, Y., and Huang, Y. (March 14, 2011). "Modeling of Thermoelastic Stress Wave in Laser-Assisted Cell Direct Writing." ASME. J. Manuf. Sci. Eng. April 2011; 133(2): 024502. https://doi.org/10.1115/1.4003612
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