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Fast spatial scanning of 3D ultrasound fields via thermography




We propose and demonstrate a thermographic method that allows rapid scanning of ultrasound fields in a volume to yield 3D maps of the sound intensity. A thin sound-absorbing membrane is continuously translated through a volume of interest while a thermal camera records the evolution of its surface temperature. The temperature rise is a function of the absorbed sound intensity, such that the thermal image sequence can be combined to reveal the sound intensity distribution in the traversed volume. We demonstrate the mapping of ultrasound fields, which is several orders of magnitude faster than scanning with a hydrophone. Our results are in very good agreement with theoretical simulations.

Author(s): Melde, K. and Qiu, T. and Fischer, P.
Journal: Applied Physics Letters
Volume: 113
Number (issue): 13
Pages: 133503
Year: 2018
Month: September
Day: 26

Department(s): Micro, Nano, and Molecular Systems
Research Project(s): Most sophisticated ultrasound fields to date and one shot additive manufacturing
Bibtex Type: Article (article)

DOI: 10.1063/1.5046834
Eprint: https://doi.org/10.1063/1.5046834
State: Published
URL: https://doi.org/10.1063/1.5046834


  title = {Fast spatial scanning of 3D ultrasound fields via thermography},
  author = {Melde, K. and Qiu, T. and Fischer, P.},
  journal = {Applied Physics Letters},
  volume = {113},
  number = {13},
  pages = {133503},
  month = sep,
  year = {2018},
  eprint = {  https://doi.org/10.1063/1.5046834 },
  url = {  https://doi.org/10.1063/1.5046834 },
  month_numeric = {9}