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CFD Modeling of Laser Guided Deposition for Direct Write Fabrication

Published online by Cambridge University Press:  10 February 2011

J. C. Sheu ,
M. G. Giridharan  and
S. Lowry
J. C. Sheu
Affiliation:
CFD Research Corporation, 215 Wynn Drive, Huntsville, AL 35805, USA, jcs@cfdrc.com
M. G. Giridharan
Affiliation:
CFD Research Corporation, 215 Wynn Drive, Huntsville, AL 35805, USA, mgg@cfdrc.com
S. Lowry
Affiliation:
CFD Research Corporation, 215 Wynn Drive, Huntsville, AL 35805, USA
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Abstract

A computational model for simulating laser-guided particle deposition process is described. This model solves for the transport of gas and particle phases in a fully coupled manner. The optical forces on the particles are evaluated from Mie theory based on local laser intensity. Simulations were performed for different operating conditions of laser power, ambient pressure, and substrate traverse speed. Simulations revealed potential problems such as particle deflected away from substrate due to ambient air current disturbances, substrate overheating, and optical fiber clogging. Possible solutions for these problems are discussed

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 624: Symposium V – Materials Development for Direct Write Technologies , 2000 , 255
Copyright
Copyright © Materials Research Society 2000

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References

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