Hi Yitian, Why don't you spin a thin layer of PDMS on top of the heating element? Then you can seal the PDMS channel to the thin PDMS layer by using an oxygen plasma, or you could also seal the two layers by using different ratios of cross-linker. If you decide to use different ratios, I would recommend using a ratio of 5:1 base:cross-linker for the channel layer and a ratio of 20:1 for the thin layer. Cure the two layers separately until the thin layer is just slightly tacky, then seal them together and bake at 65 C for at least half an hour. Josh On Wed, Jul 30, 2008 at 2:44 PM, tutuwrote: > Dear Everyone, > I try to bond the PDMS channel and glass with heater.I wanna one thin > protective layer to protect the heater from the channel solution. > Is there some kind of material can spin on the heater and have good bonding > properties with PDMS?? > Please help me /? > Thanks > Yitian > Joshua Tice Graduate Research Assistant Kenis Research Group Dept. of Chemical & Biomolecular Engineering University of Illinois, Urbana-Champaign Roger Adams Laboratory, Room 216A, Box C3 600 South Mathews Avenue Urbana, IL 61801 217-333-2442 (office) 217-244-8068 (fax)