Microparticle Separation with an Acoustic-gravity Field Controlled by Phase-shift Operation

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Abstract

The elution of particles from a coupled acoustic-gravity channel has been controlled by a phase-shift operation. Two ultrasound transducers pasted onto the top and bottom walls of a separation channel were driven at the same frequency, but with different phases. Changing the phases of the ultrasounds has allowed the formation of a node near the channel wall, and particles are retained in the channel. Two types of particles are separated under an appropriate condition.

Journal

  • Analytical Sciences

    Analytical Sciences 23 (4), 385-387, 2007

    The Japan Society for Analytical Chemistry

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