Development of an Acoustic Levitation Linear Transportation System Based on a Ring-Type Structure

作者：Thomas Gilles P L; Andrade Marco A B; Adamowski Julio Cezar; Nelli Silva Emilio Carlos

来源：IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2017, 64(5): 839-846.

DOI：10.1109/TUFFC.2017.2673244

• Acoustic radiation force
• levitation
• nonlinear acoustics
• particle manipulation
• standing wave

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.

• 出版日期2017-5