Magnetically-driven biomimetic micro pumping using vortices.

Javier Atencia; David J Beebe

doi:10.1039/b407710e

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Magnetically-driven biomimetic micro pumping using vortices.

Javier Atencia·David J Beebe

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Abstract

Planar micropumps utilizing vortices shed by an oscillating ferromagnetic bar are presented. The movement of the bar is induced by magnetic coupling with an external spinning magnet. Thus, energy transfer is achieved without physical contact or need of any on-chip power source. To create vortices inside the chip, the Reynolds number is locally increased with the oscillation of the bar. The utilization of the vortices as a tool for efficient transfer of energy is inspired by the behaviour of swimming animals and flying insects in nature. The pumps operate in two different scales (milli-scale and micro-scale) in order to take advantage of both. Experiments are presented characterizing the pumps and their flow patterns. The range of operation of the pumps is from 3 microl min(-1) to 600 microl min(-1), though smaller flow rates are also possible.

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Biomimetics Equipment Design Equipment Failure Analysis Magnetics Microfluidic Analytical Techniques Microfluidics Evaluation Study Journal Article Research Support, Non-U.S. Gov't

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Javier Atencia, David J Beebe. 2004-11-11. Magnetically-driven biomimetic micro pumping using vortices.. https://doi.org/10.1039/b407710e

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