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Details of Grant 

EPSRC Reference: GR/N36424/01
Title: POLYMER MEMBRANE CAPACITIVE TRANSDUCER ARRAYS FOR ULTRASONIC IMAGING
Principal Investigator: Billson, Dr DR
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Sch of Engineering
Organisation: University of Warwick
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 2000 Ends: 30 April 2002 Value (£): 61,776
EPSRC Research Topic Classifications:
Instrumentation Eng. & Dev.
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
The objective of this research proposal is to use ultrasonic transducers made up of arrays of capacitance transducer elements to image objects in air and in water.Conventional ultrasonic transducer arrays use piezoelectric elements, however the use of capacitance arrays is desirable for two reasons. Firstly, piezoelectric elements are inherently difficult to match to air, making uniform arrays difficult to produce. Moreover piezoelectric transducers in air inherently have a much greater bandwidth than capacitance transducers. Making capacitance transducers the preferred option for high resolution imaging.The second reason for investigating capacitance arrays is that of imaging in immersion. New applications (for example in the medical field) require increasingly higher resolution images from 1-d, and (in the near future), 2-D arrays. This requires increasing numbers of elements. It is difficult to manufacture piezoelectric arrays with more than 64 linear elements (because of connectivity problems). Capacitive arrays overcome some of these problems and may be the way ahead for immersion array technology.
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Organisation Website: http://www.warwick.ac.uk