I should have mentioned ... I use dc-magnetron 3" target 100-W sputtering.

thomas
________________________________________
From: mems-talk-bounces+wilsont=marshall.edu@memsnet.org [mems-talk-
bounces+wilsont=marshall.edu@memsnet.org] On Behalf Of Wilson, Thomas
[wilsont@marshall.edu]
Sent: Thursday, May 20, 2010 12:08 PM
To: General MEMS discussion
Subject: Re: [mems-talk] liftoff with AZ5214

I recommend you try AZ5214E in image-reversal mode (relatively simple). See
application note AZ 5200-E-IR Negative Tone Processsing. I now can do 900-nm
thick  lift-off (30-min soak and 10-sec sonication) of 4-micron space, 6-micron
line Nb gratings routinely (for 900-nm as opposed to 500 nm however, I found I
need to increase the PR thickness via two successive spins (4000 rpm) and two
softbakes => 1.8-um thick resist). Good luck.

Thomas