Hi, Until now I used Dimethyl(3,3,4,4,5,6,6,6-nonafluorohexyl)chlorosilane from Sigma Aldrich to funzionalize Silicon or glass wafers before creating PDMS stamps using softlithography techniques.A few days ago I found that Sigma Aldrich doesn't produce this product anymore.Can you suggest to me a supplier that sells this product or equivalent? Thanks in advance Noemi