Contactless pick-and-place of millimetric objects using inverted near-field acoustic levitation

Autor(es)

Andrade, Marco A. B. ^[1] ; Ramos, Tiago S. ^[2] ; Adamowski, Julio C. ^[3] ; Marzo, Asier ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Massachusetts, Phys Dept, Amherst, MA 01003 - USA

^[3] Univ Sao Paulo, Escola Politecn, BR-05508030 Sao Paulo - Brazil

^[4] Univ Publ Navarra, UpnaLab, Navarra 31006 - Spain

• Tipo de documento: Artigo Científico
• Fonte: Applied Physics Letters; v. 116, n. 5 FEB 3 2020.
• Citações Web of Science: 0

Resumo

We model and realize an ultrasonic contactless pick-and-place device capable of picking, self-centering, self-orienting, translating, and releasing flat millimetric objects. The device is an ultrasonic Langevin transducer operating at 21 kHz that radiates into air through a tapered tip. Objects are trapped few micrometers below the tip due to the near-field acoustic levitation phenomenon. We first investigate the conditions to achieve an attractive force on the object depending on its size and the device operating frequency. Second, we use a 3D acoustic model that describes the converging forces and torque that provide the self-centering and self-orienting capabilities. Third, a more advanced Computational Fluid Dynamics model based on the Navier-Stokes equations explains the small gap between the tip and the trapped object. The contactless manipulation capabilities of the device are demonstrated by picking, transporting, and releasing a Surface Mount Device in air. The presented manipulation concept can be an interesting alternative for manipulating delicate objects such as microelectromechanical devices, silicon dies, or micro-optical devices. (AU)

• Processo FAPESP: 17/27078-0 - Desenvolvimento de sistemas de levitação acústica
• Beneficiário: Marco Aurélio Brizzotti Andrade
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/04101-0 - Desenvolvimento de novos dispositivos ultrassônicos para levitação de objetos em ar
• Beneficiário: Marco Aurélio Brizzotti Andrade
• Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Internacional