Transactions on Electrical and Electronic Materials

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Enhancement of Polymer Surface Adhesion by Laser Beam Irradiation for Microfluidic Chip Application: Formation of a Channel on a Modified Surface

  • Shin, Sung-Kwon (Department of Electrical Engineering, Inha University) ;
  • Lee, Cheon (Department of Electrical Engineering, Inha University)
  • Published : 2007.12.31
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Abstract

Polymethly methacrylate(PMMA) and polydimethlysiloxane(PDMS) surfaces were treated to improve adhesiveness by irradiation of a Nd:YAG pulse laser beam($\lambda=266nm$). A pulse laser beam was directed on a polymer surface in air, and the number of pulses was controlled by mobile velocity of a motorized stage. The laser treated surfaces were investigated using an optical microscope and a contact angle measuring instrument. It was thereby revealed that the contact angles were decreased in the laser treated surface. This in turn led to an increase of oxygen content and improved adhesiveness on the modified surface. With improved surface adhesion, a fluid channel could be formed on the laser treated surface region.

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References

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