Acoustic radiation torque on a particle in a fluid: an angular spectrum based compact expression

Abstract

In this work, we derive a set of compact analytical formulas expressing the three-dimensional acoustic radiation torque (ART) exerted on a particle of arbitrary shape embedded in a fluid and insonified by an arbitrary acoustic field. This formulation enables direct computation of the ART from the angular spectrum based beam shape coefficients introduced by Sapozhnikov and Bailey [J. Acoust. Soc. Am. 133, 661 (2013)] and the partial wave coefficients. It is particularly well suited to determine the ART exerted on a particle when the acoustic field is known in a source plane.

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Cited by in corpus (5)

• Equivalence between angular spectrum-based and multipole expansion-based formulas of the acoustic radiation force and torque
• 3D trapping and dynamic axial manipulation with frequency-tuned spiraling acoustical tweezers
• Mean-acoustic fields exerted on a subwavelength axisymmetric particle
• Soundiation: A multi-functional GUI-based software in evaluation of the acoustophoresis by the acoustic radiation force and torque on arbitrary axisymmetric objects
• Self radiation force on a moving monopolar source