A more common approach would be gold, Polyimide, gold.  Thicker layers of
Polyimide and extreme care during curing to avoid voids and metal to metal
shorts.  Bill Moffat

-----Original Message-----
From: mems-talk-bounces+bmoffat=yieldengineering.com@memsnet.org [mailto:mems-
talk-bounces+bmoffat=yieldengineering.com@memsnet.org] On Behalf Of yi fei
Sent: Monday, August 20, 2012 1:33 PM
To: mems-talk@memsnet.org
Subject: [mems-talk] Deposition of silicon dioxide on gold

Hi All
  I am trying to deposit a 1um silicon dioxide layer on gold to be the
dielectric insulator layer between the bottom gold electrode and the top gold
electrode.

  I tried the ebeam evaporation of silicon dioxide due to limited access to
other facilities like PECVD or sputterer.

  It turns out there are pin holes in the evaporated layer and the top gold
electrode get short connected to the bottom gold electrode.

  Any one has any experiences of doing the similar structures: gold / dielectric
/gold ?

  I appreciate if anyone can provide useful information

  Thanks so much

                  Fei
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