Hello, We tried to work on 25mmX35mm small size glass plate to PDMS bonding, bonding result is very good at wide range of O2 plasma process. Now we have to bond 66mmX34mm glass chip with microchannel to PDMS, but always got unsatisfied result by using same process as small size, somewhere bonding very well, you can't completely remove PDMS by a blade, but somewhere you cne strip PDMS by your hand. If you have the same experience, please guide us to right way. Thank you very much! Yun