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Issue 11, 2014
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Simple, low cost MHz-order acoustomicrofluidics using aluminium foil electrodes

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Abstract

It is now possible to circumvent costly and complex cleanroom fabrication procedures to produce MHz-order acoustically-driven microfluidic platforms through the use of electrode strips cut simply from kitchen aluminium foil and pressed against piezoelectric substrates. Cleanroom deposition, lithographic patterning, and etching are entirely avoided in favor of this cut-and-place technique, which enables the generation of acoustic Lamb waves of sufficient amplitude to demonstrate rapid and efficient microfluidic transport and manipulation, microcentrifugation, and even nebulization of both sessile drops and paper-based substrates. Elimination of microfabrication processes typical of acoustic microfluidics brings us a significant step closer towards commercially-viable consumer diagnostic devices, especially for use in the developing world.

Graphical abstract: Simple, low cost MHz-order acoustomicrofluidics using aluminium foil electrodes

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Article information


Submitted
12 Feb 2014
Accepted
13 Mar 2014
First published
28 Apr 2014

Lab Chip, 2014,14, 1802-1805
Article type
Communication
Author version available

Simple, low cost MHz-order acoustomicrofluidics using aluminium foil electrodes

A. R. Rezk, J. R. Friend and L. Y. Yeo, Lab Chip, 2014, 14, 1802
DOI: 10.1039/C4LC00182F

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