Dear Dong, what is the distance between the top Ag and carbon structure covered by SOG? What value of voltage did you apply? Regards. Karolina ---------- Wiadomość przekazana dalej ---------- From: Dong CaiTo: mems-talk@memsnet.org Date: Fri, 8 Jan 2010 20:29:13 -0800 (PST) Subject: [mems-talk] shortage across insulation layers Hi, I have a 3D nanostructure made of carbon materials. Two dielectric layers are deposited on it. The first layer is 100 nm alumina by ALD, then the second one is spin-on-glass (512B). The chip was top covered by 200 nm silver film. But I frequently measured a short between the top Ag and bottom carbon. Need help! Thanks! Dong