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Published December 1, 2009 | Published
Journal Article Open

Elastomeric microfluidic diode and rectifier work with Newtonian fluids


We report on two microfluidic elastomeric autoregulatory devices—a diode and a rectifier. They exhibit physically interesting and complex nonlinear behaviors (saturation, bias-dependent resistance, and rectification) with a Newtonian fluid. Due to their autoregulatory properties, they operate without active external control. As a result, they enable increased microfluidic device density and overall system miniaturization. The demonstrated diode and rectifier would also be useful components in future microfluidic logic circuitry.

Additional Information

© 2009 American Institute of Physics. Received 9 June 2009; accepted 3 November 2009; published 7 December. The authors thank Christina Morales and Ali Ghaffari from the Caltech Microfluidic Foundry for their help with device fabrication, and Professor Tom Tombrello and Dr. Joyce Wong for fruitful discussions. This work was financed by the Caltech SURF Program, the NIH Grant No. R01-HG002644, the ARMY/DARPA Grant No. W911NF-07-1-0277, the DARPA Grant No. HR0011-04-1-0032, and the NIH Grant Nos. 1K99007151 and 4R00EB007151-03.

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Published - Liu2009p6702J_Appl_Phys.pdf


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