BCB/polyimide process

[mgobet at stanford.edu]

Hello,

I am looking into planarizing 5 to 10 um height mesas, either with BCB  
or polyimide (photosensitive or etchable). I was wondering if I could  
borrow some BCB or polyimide from somebody to first try my processing.  
Also, if somebody is interested in sharing BCB or polyimide in the  
long run, we could split the cost of the material as they are very  
expensive chemicals.

I will also appreciate any advice regarding using any of these  
materials, or processing recipes. Thanks in advance for your help.

Best regards,
Mathilde