Time-dependent electro-structural-hydrodynamic model of a single chamber peristaltic micropump.
Published: 2006
Language: eng
Number of pages: 117
ISBN-13: 9780494212899
Description: An innovative micropump capable of delivering small flow rates for applications in drug delivery and DNA transport is presented. The device consists of one pump chamber with multiple electrodes for peristaltic motion, and two passive valves to further direct the flow. A two-dimensional fluid-structural analytical model is developed. A fully coupled Finite Element Model is also presented. A passive valve geometry is optimized for low Reynolds number flow with periodic driving pressure. Various micropump configurations are analyzed. The results show a reduction of resonance frequency due to fluid damping. For a 300 mum long micropump with 12 mum microchannel depth and 4 mum thick silicon membrane, the structural resonance is &sim;340 kHz and the reduced fluid-structural resonance is &sim;24 kHz. With an improved Heaviside square wave excitation signal at 300 V, a maximum average flow rate of 3.98 muL/min and a pressure of 120 kPa is seen for the two-electrode model.
Notes: Source: Masters Abstracts International, Volume: 45-03, page: 1559.

Thesis (M.A.Sc.)--University of Toronto, 2006.

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