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Madou, Mark
BIO-MEMS Lab
Research Interests
  • Medical Diagnostics

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Micromixing and flow manipulation with polymer microactuators

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Title
Micromixing and flow manipulation with polymer microactuators
Author
Casadevall i Solvas, XavierLambert, Ruth A.Kulinsky, LawrenceRangel, Roger H.Madou, Mark
Keywords
Ag/AgCl; Artificial cilia; Bi-layer; Chaotic advection; Flow manipulation; Flowthrough; High-velocity flows; Higher frequencies; Micro devices; Micro-mixing; Microdomain; Microfabricated; Micromixers; Particle tracking; Polymer actuators; Thick gold layer
Issue Date
201110
Publisher
SPRINGER HEIDELBERG
Citation
MICROFLUIDICS AND NANOFLUIDICS, v.11, no.4, pp.405 - 416
Abstract
Polymer actuators based on Gold/PolyPyrrole bilayers were microfabricated and their properties tested for flow promoting in the microdomain. When implemented in microchannels these actuators behaved as efficient micromixers for both, flow-through and stagnant conditions. Particle tracking experiments and numerical simulations of cross-sectional domains verified the capacity of these devices to promote complex, high velocity flows with chaotic advection properties in microscopic environments. Thinner devices could be actuated at higher frequencies than thicker devices, up to 10 Hz for 10 nm thick Gold layers with voltages not over 0.6 V (vs. Ag/AgCl), which led to enhanced flow generation properties. The results herein demonstrate that these actuators are practical candidates for fluid manipulation in the microdomain (for applications such as micromixing and pumping, and possibly even for propelling of swimming microdevices).
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DOI
http://dx.doi.org/10.1007/s10404-011-0806-5
ISSN
1613-4982
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