Hello, I'm having difficulty taking SEM for PDMS. I coat a thin layer of gold about 150A on PDMS. However the SEM resolution is so low for some reason. I took the SEM for the master, which is photoresist. I can see 0.25um feature. However for PDMS, the image is blur even for 10um feature. I am just wondering if I miss something. Or it just hard to see PDMS. Thanks, Jason