Quasi-planar stepped lenses (QSL’s) based on phasing have proven to perform closely to conventional refractive lenses for the generation of both focused and limited diffraction beams. However, since QSLs are passive and made from solid materials, each must be designed with a specific frequency and beam type in mind. In this paper, we report on a tunable lens with a planar aperture that employs liquid channels to perform phase-based beamforming. The desired phase patterns are produced using specific speed-of-sound profiles and can be flexibly configured for a range of frequencies and beam types without modification. In this study, the beam data exhibits a robust focus and limited diffraction consistent with the chosen phasing pattern. The results demonstrate the efficacy of the liquid-based lens in generating beams consistent with the design parameters despite utilizing only four phase shifting channels.
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13 May 2024
186th Meeting of the Acoustical Society of America and the Canadian Acoustical Association
13–17 May 2024
Ottawa, Ontario, Canada
Biomedical Acoustics: Paper 2pBAb3
October 08 2024
Tunable lenses with liquid-based phasing for ultrasonic beamforming
Sina Rostami;
Sina Rostami
1
Department of Physics and Astronomy, The University of Mississippi
, University, MS, 38677, USA
; srostami@go.olemiss.edu
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Joel Mobley
Joel Mobley
2
Department of Physics and Astronomy, The University of Mississippi
, University, MS, 38677, USA
; jmobley@olemiss.edu
Search for other works by this author on:
Proc. Mtgs. Acoust. 54, 020001 (2024)
Article history
Received:
June 19 2024
Accepted:
August 21 2024
Connected Content
This is a companion to:
Tunable liquid-based lenses for ultrasonic beamforming
Citation
Sina Rostami, Joel Mobley; Tunable lenses with liquid-based phasing for ultrasonic beamforming. Proc. Mtgs. Acoust. 13 May 2024; 54 (1): 020001. https://doi.org/10.1121/2.0001944
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