Journal article
Frequency response of PVDF needle-type hydrophones
Ultrasound in medicine & biology, v 20(4), pp 361-366
1994
PMID: 8085292
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This paper examines the factors governing the frequency response of ultrasonic polyvinylidene flouride (PVDF) polymer needle-type hydrophones, in particular the sensitivity variations in the lower frequency range of 1–6 MHz. A theoretical model was used to analyze the influence of the hydrophone's diameter, the metal electrodes, thickness, PVDF material properties, the adhesive layer acoustical characteristics and the backing material, on the frequency response of the hydrophone. The results of the theoretical modelling differ by less than ± 0.5 dB from those obtained experimentally from the reciprocity calibration in the frequency range 1–20 MHz. It is shown that the needle hydrophone's diameter and backing material are the main reasons for the sensitivity variations observed in the frequency range below 6 MHz.
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Details
- Title
- Frequency response of PVDF needle-type hydrophones
- Creators
- B. Fay - Physikalisch-Technische BundesanstaltG. Ludwig - Physikalisch-Technische BundesanstaltC. Lankjaer - Force Institutes, DK-2605 Broendby, DenmarkP.A. Lewin - Drexel University
- Publication Details
- Ultrasound in medicine & biology, v 20(4), pp 361-366
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems
- Web of Science ID
- WOS:A1994NT64900004
- Scopus ID
- 2-s2.0-0028338317
- Other Identifier
- 991019173988504721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Acoustics
- Radiology, Nuclear Medicine & Medical Imaging