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Title: Broadband acoustic trapping of a particle by a soft plate with a periodic deep grating

We investigated the acoustic radiation force (ARF) acting on a cylindrical brass particle near an acoustically soft plate patterned with a periodic deep grating. The existence of a negative ARF by which the particle can be pulled towards the sound source is confirmed. In addition, the bandwidth for negative ARF in this soft-plate system is found to be considerably broader than in the stiff-plate systems typically used in previous studies. It is further demonstrated by field distribution analysis that the negative ARF is caused by the gradient force induced by the gradient vortex velocity field near the surface, which stems from the collective resonance excitation of the antisymmetric coupling of Scholte surface waves in the thin plate. The effects of particle location and size on the ARF were also investigated in detail. The negative ARF has potential use in applications requiring particle manipulation using acoustic waves.
Authors:
; ; ; ;  [1]
  1. Department of Physics, Jishou University, Jishou, Hunan 416000 (China)
Publication Date:
OSTI Identifier:
22402943
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 16; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BRASS; COUPLING; CYLINDRICAL CONFIGURATION; EXCITATION; GRATINGS; PARTICLES; PERIODICITY; PLATES; RESONANCE; SOUND WAVES; SURFACES; TRAPPING; VELOCITY; VORTICES; WAVE PROPAGATION