Hi, Fei, Thank you for the advise!!! I should have thought of that!! Thank you! Regards, Mingke Xiong AEM, Inc. 6670 Cobra Way San Diego, CA 92121, USA 858-481-0210 ext. 1660 www.aem-usa.com ________________________________________ From: mems-talk-bounces+mxiong=aem-usa.com@memsnet.org [mems-talk-bounces+mxiong =aem-usa.com@memsnet.org] On Behalf Of Fei Wang [wangfeiustc@gmail.com] Sent: Thursday, October 28, 2010 1:36 AM To: General MEMS discussion Subject: Re: [mems-talk] copper plating Hi, Mingke, You can try to combine your forward current pulse with a reverse cycle. Best regards, Fei