DL11: Microflow Control using Thermally Responsive Triblock Copolymers


Dilute aqueous solutions of poly(ethylene oxide)x-poly(propylene oxide)y-poly(ethylene oxide)x triblock copolymers undergo reversible gel formation at elevated temperatures. This effect can be effectively used for active and passive flow control in microfluidic devices, where the gel phase can block the flow channel partially or entirely. Heat transfer occurs fast through the typically small width of a microchannel resulting in a fast valve response time. A novel micromixing concept has been developed based on active microvalves.

Project end date: 08/31/05

Publication date: 
February 1, 2005
Publication type: 
BSAC Project Materials (Final/Archive)
PREPUBLICATION DATA - ©University of California 2005

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