Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Acoustic radiation force and torque on spheroidal particles in an ideal cylindrical chamber

Abstract : We theoretically investigate how the acoustic radiation force and torque arise on a small spheroidal particle immersed in a nonviscous fluid inside an ideal cylindrical chamber. The ideal chamber comprises a hard top and bottom (rigid boundary condition), and a soft or hard lateral wall. By assuming the particle is much smaller than the acoustic wavelength, we present analytical expressions of the radiation force and torque caused by an acoustic wave of arbitrary shape. Unlike previous results, these expressions are given relative to a fixed laboratory frame. Our model is showcased for analyzing the behavior of an elongated metallic microspheroid (with a 10 : 1 aspect ratio) in a half-wavelength acoustofluidic chamber with a few millimeters diameter. The results show the radiation torque aligns the microspheroid along the nodal plane, and the radiation force causes a translational motion with a speed of up to one body length per second. At last, we discuss the implications of this study to propelled nanorods by ultrasound.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-03010946
Contributor : Jean-Luc Aider <>
Submitted on : Monday, January 4, 2021 - 4:38:45 PM
Last modification on : Wednesday, January 6, 2021 - 2:34:24 PM

File

2009.08808(1).pdf
Files produced by the author(s)

Identifiers

Citation

Jose P. Leao-Neto, Mauricio Hoyos, Jean-Luc Aider, Glauber T. Silva. Acoustic radiation force and torque on spheroidal particles in an ideal cylindrical chamber. 2020. ⟨hal-03010946⟩

Share

Metrics

Record views

57

Files downloads

10


Données de recherche

doi: web.