Dear All, I am working on microcantilvere based humdity sensor. i have made the device i.e microcantilver of nitride and oxide. for sensing film i want to use polyimide but i have not been able to get for long time. it is because the polyimide now a days has been made to have less water absorbing capacity. the earlier series which i want to use is not availabale anywhere. I request plz anyone can help me in finding option for polyimide which i can use as sensing film on my cantilever to detect the moisture. i am in great need of the solution. plz help. regards yogendra