Particle Manipulation in a Microfluidic Channel with an Electronically Controlled Linear Piezoelectric Array

Wang, H., Qiu, Y. , Demore, C., Cochran, S. , Glynne-Jones, P. and Hill, M. (2012) Particle Manipulation in a Microfluidic Channel with an Electronically Controlled Linear Piezoelectric Array. In: 2012 IEEE International Ultrasonics Symposium (IUS), Dresden, Germany, 7-10 Oct 2012, ISBN 9781467345613 (doi: 10.1109/ULTSYM.2012.0500)

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Abstract

Ultrasonic standing wave manipulation has been proved to be a simple, robust technology to be integrated in microfluidic systems for a range of applications such as particle filtration and concentration, particle trapping and washing, and sensor enhancement. Here we report recent progress in the design, fabrication and experimental demonstration of an electronically controlled ultrasonic array device used for 1-D manipulation of particles along a microfluidic channel. In a previous paper [1], the particle manipulation feasibility has been demonstrated by a 12 element, 500 μm pitch array device. In this paper, an improved 30-element, 200 μm pitch array device made from PZ26 piezoelectric composite has been fabricated and connected to control electronics. The control system comprises a Xilinx Spartan 3a FPGA development board and bespoke analogue driving circuitry, designed for signal multiplexing for array element excitation. A rectangular capillary forming a half wavelength resonance microfluidic chamber was coupled to the array to make a multilayer planar resonator. Manipulation under electronic control was demonstrated with 10 μm fluorescent microspheres suspended in water.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Qiu, Dr Yongqiang and Cochran, Professor Sandy and Demore, Dr Christine
Authors: Wang, H., Qiu, Y., Demore, C., Cochran, S., Glynne-Jones, P., and Hill, M.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
ISSN:1051-0117
ISBN:9781467345613
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