Scaling properties of a low-actuation pressure microfluidic valve
Using basic physical arguments, we present a design and method for the fabrication of microfluidic valves using multilayer soft lithography. These on-off valves have extremely low actuation pressures and can be used to fabricate active functions, such as pumps and mixers in integrated microfluidic chips. We characterized the performance of the valves by measuring both the actuation pressure and flow resistance over a wide range of design parameters, and compared them to both finite element simulations and alternative valve geometries.
© 2004 American Institute of Physics. Received 16 June 2003; accepted 7 October 2003.
Published - STUjap04.pdf