| Info. | Vol.3 - No.3 (2009.09.20) |
|---|---|
| Title | Amperometric Detection of Bisphenol-A on Laser Fabricated Capillary Electrophoresis Device |
| Authors | Sung Mok Jung1, Hyung-Jun Kim1, Bong-Jin Kim1, Gi-Sung Joo2, Tae-Sik Yoon2, Yong-Sang Kim2 & Hyun Ho Lee1 |
| Institutions | 1Department of Chemical Engineering, Myongji University,
Gyeonggi 449-728, Korea 2Department of Nano Science & Engineering, Myongji University, Gyeonggi 449-728, Korea Correspondence and requests for materials should be addressed to H.H. Lee (hyunho@mju.ac.kr) |
| Abstract | In this study, poly dimethyl siloxane (PDMS) capillary or microchannel electrophoresis devices were fabricated and tested by laser writer. A programmable laser writer was controlled to make microchannel on PDMS mold instead of a conventional photolithography with SU-8. Indium tin oxide (ITO) electrodes for electrochemical detection of bisphenol-A were made by photolithography. UV-ozone treatment was used to bind laser patterned PDMS mold and patterned ITO glass. During electrophoresis, changes of current measured at working electrode were recorded with time by source measure unit. The peak current representing for detection of bisphenol-A was analyzed and compared with devices fabricated by laser and conventional lithography, respectively. Relationships among microchannel size, separation voltage, and peak currents were established. |
| Keyword | Capillary, Microchannel, Electrophoresis, PDMS, Laser writer |
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