Not entirely true. There is a group at CERN headed by Fabio Sauli that
regularly wet etches Dupont polyimide foils to make radiation detectors.
Search Nuclear Instruments and Methods (an Elsivier Pub.) for GEMs (Gas
Electron Multipliers). If you the reference maybe you could share them
with us.

-Mike


>>> [email protected] 04/14/03 09:57AM >>>
Is it cured or not? If cured not much can be done, and if it is not you
can not
etch it, only strip it. Do you mean you want to pattern PI with some
other
masking material and then wet etch it?


--- Shadyar Farhangfar  wrote:
> Dear All,
>
> Does anybody happen to know about the wet-etching of
> polyimide? Is there any "standard" etchant to wet-etch
> polyimide layers?
>
> Appreciating any hint,
> Sh.Farhangfar
>
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