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Analytical Modeling and Excimer Laser Micromachining of Microchannel for Medical Devices Development

[+] Author Affiliations
Euiseok Kim, Yuan-Shin Lee

North Carolina State University, Raleigh, NC

Roger J. Narayan

University of North Carolina, Chapel Hill, NC

Paper No. IMECE2010-40985, pp. 1037-1047; 11 pages
doi:10.1115/IMECE2010-40985
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 3: Design and Manufacturing, Parts A and B
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4427-4
  • Copyright © 2010 by ASME

abstract

In this paper, an analytical modeling of microchannel design and manufacturing with excimer laser micromachining is presented for medical devices development. Micro/Nano fabrication methods have made possible the creation of extremely tiny structures and systems which cannot be generated using traditional manufacturing processes. Current fabrication methods of microchannels generally require serial fabrication processes including a masking process. To overcome the drawbacks of current methods, we propose to use excimer laser micromachining to directly create microfluidic structures. Parametric study of laser machining was conducted before fabrication of microfluidic systems on polyethylene. An analytic modeling of the laser micromachining is presented to predict the machined microstructures and the surface finish. The liquid flow was visualized and studied using fluorescent dye and the velocity was measured to compare liquid behavior in each channel. The presented techniques can be used for the design and manufacturing of micro-scale medical devices development.

Copyright © 2010 by ASME

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