[labnetwork] Ageing of SU-8

[Philipp Altpeter]

Dear all,

I'm wondering what happens first when the expiry date of SU-8 is 
(heavily) exceeded.
Recent exposure results indicate that the sensitivity seems to be 
roughly the same but the adhesion is rather poor (worse than usual).
Do you think this comes from ageing of SU-8 or rather wrong treatment / 
substrate conditions? (I'm aware that the treatment - especially the 
baking procedure - is critical in terms of adhesion)

Thank you in advance!

Philipp

-- 
Philipp Altpeter
University of Munich (LMU) and
Center for NanoScience (CeNS)
Chair of Solid State Physics / N.N.
Geschwister-Scholl-Platz 1
D-80539 Munich