Hi All,
I try to pattern my sample on the PMMA950K(500nm) and deposite Al2O3(300nm)
then do the lift-off. But after put in warm acetone for 30MIN, non-thing be
lift-off. Al2O3 is still all over my sample. Do anyone know how to lift-off
the Al2O3? Thanks.

Chien-Chih Huang(Jeff)