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Title: Characterization of the acoustic field generated by a horn shaped ultrasonic transducer

A horn shaped Langevin ultrasonic transducer used in a single axis levitator was characterized to better understand the role of the acoustic profile in establishing stable traps. The method of characterization included acoustic beam profiling performed by raster scanning an ultrasonic microphone as well as finite element analysis of the horn and its interface with the surrounding air volume. The results of the model are in good agreement with measurements and demonstrate the validity of the approach for both near and far field analysis. Our results show that this style of transducer produces a strong acoustic beam with a total divergence angle of 10 degrees, a nearfield point close to the transducer surface and a virtual sound source. These are desirable characteristics for a sound source used for acoustic trapping experiments.
Authors:
 [1] ; ORCiD logo [2] ;  [3] ; ORCiD logo [4] ;  [5] ;  [2] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS). X-ray Science Div.
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS). Engineering Support Div.
  3. Georgia Inst. of Technology, Atlanta, GA (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS). X-ray Science Div.; Materials Development Inc., Arlington Heights, IL (United States)
  5. Materials Development Inc., Arlington Heights, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 111; Journal Issue: 10; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1393538
Alternate Identifier(s):
OSTI ID: 1379997