Particle manipulation by a non-resonant acoustic levitator

Journal Article · Mon Jan 05 00:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4905130· OSTI ID:22395684

Andrade, Marco A. B., ^[1]; Pérez, Nicolás ^[2]; Adamowski, Julio C. ^[3]

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1. Institute of Physics, University of São Paulo, CP 66318, 05314-970 São Paulo (Brazil)
2. Centro Universitario de Paysandú, Universidad de la República, Ruta 3 km 363, 60000 Paysandú (Uruguay)
3. Department of Mechatronics and Mechanical Systems Engineering, Escola Politécnica, University of São Paulo, Av. Mello Moraes, 2231, 05508-030 São Paulo (Brazil)

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.

• OSTI ID: 22395684
• Journal Information: Applied Physics Letters, Vol. 106, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACOUSTICS
DISTANCE
LEVITATION
PARTICLES
POTENTIALS
TRANSDUCERS
ULTRASONIC WAVES