Vibroacoustic handling and levitation of microparticles in air

Abstract

Abstract. The levitation and controlled movement of substances in the air has many potential applications, from materials handling to biochemistry and pharmacy. In this work, the handling of microparticles by sound field in vibrating cylinder was investigated by simulation and experimental measurement. A standing wave field created between the piezotransducer and the reflector created the conditions for levitating microparticles, which were concentrated at nodes of the vibrating cylinder surface. The acoustic wave and the cylinder walls were excited by the same disk-shaped piezotransducer fixed to the bottom of the cylinder

Maximization of Acoustic Levitating Force for a Single-Axis Acoustic Levitation System Using the Finite Element Method

“…[8] Marston [9] provided an improved approximation to calculate the radiation force applied to a sphere in acoustic levitation. A study on handling the microparticles using a sound field has been performed [10] and an acoustic levitation transportation system has been developed to move the particles in a linear direction. [11] The parameters of the single-axis acoustic levitator play an important role in determining the radiation force.…”