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Surface Modification of Polymethyl methacrylate(PMMA) by Laser Surface Treatment for Microfluidic Chip  

Shin, Sung-Kwon (인하대학 전기공학과)
Lee, Sang-Don (국립대학 전기공학과)
Lee, Cheon (인하대학 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.56, no.2, 2007 , pp. 334-337 More about this Journal
Abstract
After the advent of micro-Total Analysis Systems(${\mu}-TAS$) based on silicon various polymer for microfluidic chip has been studied. Polymer materials for microfluidic compared with silicon and glass which were traditional materials of a microfluidic chip, have the advantages of economical efficiency simple manufacturing process and wide materials selectivity corresponding to fluids. Surface energy of polymers we, however lower than silicon or glass. To overcome this problem, various surface modification methods have been investigated. The surface modification using laser has the advantage of the simple experiment that only directly irradiated laser beam on the material surface in the air. This work discuss the surface modification of polymethly methacrylate(PMMA) by 4th harmonic Nd:YAG laser (${\lambda}266nm$, pulse) treatment. After the laser treatment, the PMMA surface was investigated using a contact angle measuring instrument. The contact angle was decreased with a increase of the surface oxygen content. This result means the surface energy of PMMA was increased by the laser treatment without changing of its bulk characteristics.
Keywords
PMMA; microfluidic chip; surface modification; Nd:YAG laser; wettability;
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Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
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