want to borrow proTEK (protective coating)

Qiushi(Helen) Ran qshran at gmail.com
Tue Nov 15 18:13:47 PST 2011

Sorry to spam. I am doing a KOH etch from the backside of the wafer. But my
front side of wafer has Al, which can't survive in a long time KOH etch. I
am wondering if  anyone have proTEK (
http://www.brewerscience.com/products/protective-coatings) or have used the
proTEK before to protect the frontside of the wafer? Any comments and
suggestions are welcomed.

Qiushi(Helen) Ran
Cell: 650-796-1439
Ph.D. Candidate
Department of Electrical Engineering,
Stanford, CA, 94305
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