Abstract:Ultrasound techniques are applied in various fields such as washing, fine particle manipulation and solid-liquid separation. In the fine particle manipulation, ultrasonic ranging in MHz band is usually employed. Fine particles with μm order in diameter are treated because of limitations of the wavelength. In contrast, we discovered phenomena that mm-order particles dispersed in water are flocculated spherically by irradiating 20-kHz-band-ultrasound. In order to clarify the mechanism of this flocculation, we in… Show more
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