Particle manipulation by a non-resonant acoustic levitator

We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wa...

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Veröffentlicht in:Applied physics letters 2015-01, Vol.106 (1)
Hauptverfasser: Andrade, Marco A. B., Pérez, Nicolás, Adamowski, Julio C.
Format: Artikel
Sprache:eng
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Zusammenfassung:We present the analysis of a non-resonant acoustic levitator, formed by an ultrasonic transducer and a concave reflector. In contrast to traditional levitators, the geometry presented herein does not require the separation distance between the transducer and the reflector to be a multiple of half wavelength. The levitator behavior is numerically predicted by applying a numerical model to calculate the acoustic pressure distribution and the Gor'kov theory to obtain the potential of the acoustic radiation force that acts on a levitated particle. We also demonstrate that levitating particles can be manipulated by controlling the reflector position while maintaining the transducer in a fixed position.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4905130