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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.

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Authors and Affiliations

  1. Department of Chemistry, Tokyo Institute of Technology, Meguro, Tokyo, 152-8551, Japan

    Takashi Masudo & Tetsuo Okada

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  1. Takashi Masudo
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  2. Tetsuo Okada
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Correspondence to Tetsuo Okada.

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Masudo, T., Okada, T. Microparticle Separation with an Acoustic-gravity Field Controlled by Phase-shift Operation. ANAL. SCI. 23, 385–387 (2007). https://doi.org/10.2116/analsci.23.385

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  • DOI: https://doi.org/10.2116/analsci.23.385

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