Dear Basar, Do you cure the resist before the deposition? If not, the bubbles may be formed due to the outgassing of the resist during the depostion. Regards, Kagan basar bolukbas wrote: > Hello, > > I am trying to deposite Ni-Au metal layers (500A-3500A) to PMMA-950K-A6 resist but > after every deposition, i observed some resist/metal peeling problem. > This bubble like structures trigger the removing of the metal layers. > Do you have any suggestion or solution about this problem? > > Thank you for your answers.