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Proceedings Paper

Research on wet etching at MEMS torsion mirror optical switch
Author(s): Yi Zhang; Jifeng Wang; Yuan Luo
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Paper Abstract

Etching is a very important technique at MEMS micromachining. There are two kinds of etching processing, the one is wet etching and the other is dry etching. In this paper, wet selective etching with KOH and tetramethyl ammonium hydroxide (TMAH) etchants is researched in order to make a torsion mirror optical switch. The experiments results show that TMAH with superphosphate is more suitable at MEMS torsion mirror optical switch micromachining than KOH, and it also has good compatibility with IC processing. Also our experiments results show some different with other reported research data. More work will be done to improve the yield rate of MEMS optical switch.

Paper Details

Date Published: 18 October 2002
PDF: 7 pages
Proc. SPIE 4902, Optomechatronic Systems III, (18 October 2002); doi: 10.1117/12.467343
Show Author Affiliations
Yi Zhang, Chongqing Univ. of Posts and Telecommunications (China)
Jifeng Wang, Chongqing Univ. of Posts and Telecommunications (China)
Yuan Luo, Chongqing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 4902:
Optomechatronic Systems III
Toru Yoshizawa, Editor(s)

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