Hi Seyed, I am sorry. I haven't tried such thin PDMS membranes. However, you may try to increase the spin speed and time to see if you can achieve that. Note that you should pour PDMS equally everywhere on the substrate to enhance the membrane thickness's uniformity. Greetings, Nam Le Ritsumeikan University, Japan On Sat, Aug 23, 2008 at 1:12 AM,wrote: > Hi, > Wonderful, I am trying to spin aroud 10 micrometer of Sylgard 184 on 1 to 2 > inch > glass wafers. Could you please tell me the spin parameters required to do > such a thin layer of PDMS. > I appreciate yoy comments. > Thank you > > Seyed