期刊
APPLIED SURFACE SCIENCE
卷 364, 期 -, 页码 815-821出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2015.12.153
关键词
SU-8; PDMS; Nitrogen plasma treatment; Contact angle; FTIR; XPS; Pull-off test
类别
资金
- National Natural Science Foundation of China [31170954]
Polydimethylsiloxane (PDMS) and SU-8 are both widely used for microfluidic system. However, it is difficult to permanently seal SU-8 microfluidic channels using PDMS with conventional methods. Previous efforts of combining these two materials mainly employed oxygen plasma modified PDMS. The nitrogen plasma modification of PDMS bonding with SU-8 is rarely studied in recent years. In this work, the mechanism of nitrogen plasma modified PDMS bonding with SU-8 was investigated. The fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and contact angle of a water droplet were used to analyze the nitrogen plasma modified surface and the hydrophilic stability of PDMS samples. Pull-off tests were used for estimating the bonding effect of interface between nitrogen plasma modified PDMS and SU-8. (C) 2015 Elsevier B.V. All rights reserved.
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