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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Acoustic levitation of a large solid sphere

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Autor(es):
Andrade, Marco A. B. ; Bernassau, Anne L. ; Adamowski, Julio C.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: Applied Physics Letters; v. 109, n. 4 JUL 25 2016.
Citações Web of Science: 25
Resumo

We demonstrate that acoustic levitation can levitate spherical objects much larger than the acoustic wavelength in air. The acoustic levitation of an expanded polystyrene sphere of 50mm in diameter, corresponding to 3.6 times the wavelength, is achieved by using three 25 kHz ultrasonic transducers arranged in a tripod fashion. In this configuration, a standing wave is created between the transducers and the sphere. The axial acoustic radiation force generated by each transducer on the sphere was modeled numerically as a function of the distance between the sphere and the transducer. The theoretical acoustic radiation force was verified experimentally in a setup consisting of an electronic scale and an ultrasonic transducer mounted on a motorized linear stage. The comparison between the numerical and experimental acoustic radiation forces presents a good agreement. Published by AIP Publishing. (AU)

Processo FAPESP: 14/24159-1 - Manipulação sem contato de partículas utilizando ultrassom
Beneficiário:Marco Aurélio Brizzotti Andrade
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/50408-1 - Anne Bernassau | Heriot Watt University - Escócia
Beneficiário:Marco Aurélio Brizzotti Andrade
Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional