| Texto completo | |
| Autor(es): |
Thomas, Gilles P. L.
;
Andrade, Marco A. B.
;
Adamowski, Julio Cezar
;
Nelli Silva, Emilio Carlos
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL; v. 64, n. 5, p. 839-846, MAY 2017. |
| Citações Web of Science: | 5 |
| Resumo | |
A linear acoustic levitation transportation system based on a ring-type vibrator is presented. The system is composed by two 21-kHz Langevin transducers connected to a ring-shaped structure formed by two semicircular sections and two flat plates. In this system, a flexural standing wave is generated along the ring structure, producing an acoustic standing wave between the vibrating ring and a plane reflector located at a distance of approximately a half wavelength from the ring. The acoustic standing wave in air has a series of pressure nodes, where small particles can be levitated and transported. The ring-type transportation system was designed and analyzed by using the finite element method. Additionally, a prototype was built and the acoustic levitation and transport of a small polystyrene particle was demonstrated. (AU) | |
| Processo FAPESP: | 14/24159-1 - Manipulação sem contato de partículas utilizando ultrassom |
| Beneficiário: | Marco Aurélio Brizzotti Andrade |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |