Microparticle separation with an acoustic-gravity field controlled by phase-shift operation.
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.
Masudo
Takashi
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Department of Chemistry, Tokyo Institute of Technology, Tokyo, Japan.
Okada
Tetsuo
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