Micro-moulded randomised piezocomposites for high frequency ultrasound imaging

Y. Jiang, C. E. M. Demore, C. Meggs, C. Dunare, T. Stevenson, J. Bamber, S. Cochran, T.W. Button

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    8 Citations (Scopus)


    1-3 piezocomposites that can operate at over 30 MHz are in demand to improve spatial resolution on a sub-millimetre level for biomedical ultrasound imaging applications. However, the fabrication of such materials remains a challenge as ultrafine dimensions are required in conventional composite designs. We have previously reported the design of randomised composites to eliminate coupling to lateral modes and to relax overall dimensional constraints. In this work, practical fabrication of composites based on these designs has been realised by using a novel micro-moulding approach combining gel casting with soft lithography. Impedance spectra of randomised composites confirm their advantage for suppressing spurious modes. Pulse-echo responses of two completed transducers operating at 30 and 70 MHz have demonstrated their functional performance.
    Original languageEnglish
    Title of host publication2012 IEEE International Ultrasonics Symposium
    Number of pages4
    ISBN (Print)9781467345613
    Publication statusPublished - 2012
    Event2012 IEEE International Ultrasonics Symposium (IUS) - Dresden, Germany
    Duration: 7 Oct 201210 Oct 2012


    Conference2012 IEEE International Ultrasonics Symposium (IUS)
    Abbreviated title2012 IEEE IUS
    Internet address


    • pulse-echo responses
    • Impedance
    • ultrafine dimensions
    • gel casting
    • Resonant frequency
    • submillimetre level
    • conventional composite designs
    • Educational institutions
    • microfabrication
    • biomedical ultrasonics
    • overall dimensional constraints
    • ultrasonic imaging
    • frequency 70 MHz
    • moulding
    • spatial resolution
    • electrochemical impedance spectroscopy
    • biomedical ultrasound imaging
    • casting
    • transducers
    • piezoelectric transducers
    • frequency 30 MHz
    • lateral modes
    • micromoulded randomised piezocomposites
    • novel micromoulding approach
    • practical fabrication
    • high frequency ultrasound imaging
    • soft lithography
    • micro-moulding
    • composite materials
    • Transducers
    • high-frequency ultrasound
    • Acoustics
    • suppressing spurious modes
    • piezoelectricity
    • 1–3 composite
    • high-frequency effects
    • biomedical transducers
    • Ceramics
    • randomised composites
    • impedance spectra
    • ultrasonic transducers
    • Fabrication

    ASJC Scopus subject areas

    • Acoustics and Ultrasonics
    • Ceramics and Composites


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