Particle manipulation in a microfluidic channel with an electronically controlled linear piezoelectric array

Han Wang, Yongqiang Qiu, Christine Demore, Sandy Cochran, Peter Glynne-Jones, Martyn Hill

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

    4 Citations (Scopus)


    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.
    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


    • array element excitation
    • size 200 mum
    • electronically controlled ultrasonic array device
    • rectangular capillary
    • microfluidics
    • size 500 mum
    • particle filtration and concentration
    • fluorescent microspheres
    • sensor enhancement
    • Arrays
    • particle trapping and washing
    • Microfluidics
    • microfluidic chamber
    • ultrasonic standing wave manipulation
    • microfluidic channel
    • multilayer planar resonator
    • 2-2 composite
    • Transducers
    • Acoustics
    • control system
    • planar resonator
    • signal multiplexing
    • electronic control
    • particle manipulation
    • Fluids
    • Field programmable gate arrays
    • PZ26 piezoelectric
    • FPGA
    • size 10 mum
    • microfluidic systems
    • bespoke analogue driving circuitry
    • piezoelectric devices
    • control electronics
    • Xilinx Spartan 3a FPGA development board
    • linear piezoelectric array
    • Array

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Acoustics and Ultrasonics


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