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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.)

Contactless Acoustic Manipulation and Sorting of Particles by Dynamic Acoustic Fields

Texto completo
Autor(es):
Andrade, Marco A. B. ; Skotis, Georgios Drosos ; Ritchie, Scott ; Cumming, David R. S. ; Riehle, Mathis O. ; Bernassau, Anne L.
Número total de Autores: 6
Tipo de documento: Artigo Científico
Fonte: IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL; v. 63, n. 10, SI, p. 1593-1600, OCT 2016.
Citações Web of Science: 5
Resumo

This paper presents a contactless, acoustic technique to manipulate and sort particles of varying size in both liquid and air media. An acoustic standing wave is generated by the superposition of counterpropagating waves emitted by two opposing emitters. The acoustic radiation force traps the smallest particles at the pressure nodes of the acoustic standing wave. The position of the particles can be manipulated by dynamically changing the phase difference between the two emitters. By applying a dynamic acoustic field (DAF), it is demonstrated that particles can be manipulated spatially and sorted according to size. The discrimination (sorting dynamic range) capability is initially demonstrated in liquid media by separating three different sets of polystyrene particles, ranging in size from 5 to 45 mu m in diameter. The separation between particles was performed up to a ratio of 5/6 in diameter (20% diameter difference). Finally, the scalability of the DAF method is demonstrated by sorting expanded polystyrene particles of 2 and 5 mm diameter in air. (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