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Title: Acoustic non-diffracting Airy beam

The acoustic non-diffracting Airy beam as its optical counterpart has unique features of self-bending and self-healing. The complexity of most current designs handicaps its applications. A simple design of an acoustic source capable of generating multi-frequency and broad-band acoustic Airy beam has been theoretically demonstrated by numerical simulations. In the design, a piston transducer is corrugated to induce spatial phase variation for transducing the Airy function. The piston's surface is grooved in a pattern that the width of each groove corresponds to the half wavelength of Airy function. The resulted frequency characteristics and its dependence on the size of the piston source are also discussed. This simple design may promote the wide applications of acoustic Airy beam particularly in the field of medical ultrasound.
Authors:
; ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [2]
  1. Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, School of Physics, Nanjing University, Nanjing 210093 (China)
  2. (China)
  3. Department of Physics, University of Vermont, Burlington, Vermont 05405 (United States)
Publication Date:
OSTI Identifier:
22399261
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 10; 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; ACOUSTICS; AIRY FUNCTIONS; BENDING; COMPUTERIZED SIMULATION; DESIGN; HEALING; PISTONS; SOUND WAVES; SURFACES; TRANSDUCERS; VARIATIONS