Dear J. J. Wang, Refer to your response to Terry Zhu, did you mean that you had used SU8 to form a electroplating mould and successfully plated gold? you used Cr layer and then Omnicoat, followed by SU8 processing, finally electrolytic gold plating, right? if not, would you please correct me? I did the similiar thing but based on silver rather than Cr. However, I failed because SU8 layer lift off after I plated gold and cool down. I want to keep the SU8 after plating because I want to plating another metal (Ni) on top of Gold. Would you please give me some advice? Thanks a lot! J. Zhu > -----Original Message----- > From: mems-talk-bounces@memsnet.org [SMTP:mems-talk-bounces@memsnet.org] On Behalf Of polly > Sent: 25 May 2006 13:04 > To: mems-talk@memsnet.org > Subject: [mems-talk] query > > > dear Sir > > i would to know the critical post metalization temperature after which aluminum spikes into silicon.