Hi Tony,

Thanks for your suggestion. It is very helpful and I'm gonna try on it.
I have one more small question. Do you bake the wafer piece after USB in
methanol or you just directly spin adhesion promoter or PR after this step?

Thanks,

Li. Zhang
---------
Graduate Student
Edward P. Fitts Department of Industrial and Systems Engineering
North Carolina State University
Raleigh, NC 27695-7906
USA
TEL: (919) 413-5459
Email: [email protected]
Web:  http://www.ise.ncsu.edu
         http://www.nnf.ncsu.edu