Could temperature be a knob for you. I see curves that show surface tension of water at 95 C at 60 dynes/cm and 72 dynes/cm at 20 C. Regards, Scott ----- Original Message ----- From: "Lin Yu"To: "General MEMS discussion" Sent: Wednesday, August 23, 2006 12:51 PM Subject: Re: [MEMS-talk] how to make water more polar > Thank you so much, guys. Sorry, I asked the wrong question. > > This is what I'm doing: I prepared two samples with complementary gold > patterns on top. Then self-assembly monolayers were > formed on the gold patterns to make certain regions hydrophilic and the > other regions hydrophobic. After water is dropped on the > hydrophilic regions, one sample is placed on top of the other one. We kind > of hope self alignment can happen due to the capillary force of water. But > it didn't. So we are looking for some other liquid can do this better than > water. >