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Proceedings Paper

Hydrophilic surface formation on PDMS stamp by microwave plasma-induced grafting
Author(s): Quanguo He; Zhengchun Liu; Nongyao He; Pengfeng Xiao; Zuhong Lu
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Paper Abstract

In this paper, a method of microwave plasma-induced grafting to enhance PDMS surface hydrophilicity was developed and its durable hydrophilicity resulted from an oriented grafting of acrylonitrile (AN) was described. In the investigations, the microwave plasma treatment parameters and post-wet chemical grafting were optimized, and their effects on hydrophilicity were also investigated. Contact angle measurements were used to assess the hydrophilicity of the various modified PDMS surfaces. Moreover, attenuated total reflectance Fourier transform infrared (ATR-FT-IR) spectroscopic characterization was used to evaluate PDMS samples variation. It has been found that the cyano groups bonded onto PDMS showed the best hydrophilicity among the modified surfaces, which showed a better affinity to acetonitrile. Therefore the hydrophilic surface was formed on PDMS stamps and the results implied promising applications of DNA microarray.

Paper Details

Date Published: 15 October 2001
PDF: 6 pages
Proc. SPIE 4601, Micromachining and Microfabrication Process Technology and Devices, (15 October 2001); doi: 10.1117/12.444751
Show Author Affiliations
Quanguo He, Southeast Univ. (China)
Zhengchun Liu, Southeast Univ. (China)
Nongyao He, Southeast Univ. (China)
Pengfeng Xiao, Southeast Univ. (China)
Zuhong Lu, Southeast Univ. (China)

Published in SPIE Proceedings Vol. 4601:
Micromachining and Microfabrication Process Technology and Devices
Norman C. Tien; Qing-An Huang, Editor(s)

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