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Details of Grant 

EPSRC Reference: GR/R13333/01
Title: Micromachined Ultrasonic Filter With Thick-Filmed Piezoelectric Drive For Microfluidic Applications
Principal Investigator: White, Professor NM
Other Investigators:
Hill, Professor M Beeby, Professor SP Coakley, Professor W
Evans, Professor A
Researcher Co-Investigators:
Dr J Hawkes
Project Partners:
Defence Science & Tech Lab DSTL Fairey Microfiltrex Ltd
Department: Electronics and Computer Science
Organisation: University of Southampton
Scheme: Standard Research (Pre-FEC)
Starts: 29 May 2001 Ends: 28 November 2004 Value (£): 249,092
EPSRC Research Topic Classifications:
Microsystems
EPSRC Industrial Sector Classifications:
Healthcare Aerospace, Defence and Marine
Pharmaceuticals and Biotechnology Manufacturing
Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
Ultrasonic waves have been shown to provide a means of liquid/solid separation. When a standing wave is set up in a liquid, forces act on particles acting towards nodal planes within the liquid. The effect has been used in the past for cell separation in biology. The motivation for this proposal is for a flow-through separation technique (acoustic filter).Existing work at Southampton has demonstrated the feasibility of such an approach based on the concept of having a single flow inlet one side of an acoustically-driven rectangular cell and several outlets on the opposite face. The system holds its resonance condition via closed loop electronic control using an embedded microcontroller.The proposed programme of work will aim to produce a microfluidic version of the device capable of filtering solid particles (in the range 1-100 microns) from liquids with relatively low flow-rates. The fabrication will exploit the latest results of our research into combining thick-film processing with silicon micromachining methods. Finite element techniques will be used to model the system.
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Organisation Website: http://www.soton.ac.uk