Abstract
We describe an inexpensive alternative to conventional hydrophones for measuring ultrasonic fields. The hydrophone, composed of common laboratory supplies, depends on the acoustoelectric (AE) effect, a well-known interaction between electrical current and pressure. Beam patterns of a 540 kHz annular transducer captured using a bowtie-graphite hydrophone were consistent with patterns obtained using conventional, more expensive hydrophones. The AE signal was proportional to both the applied bias current (1.83 μV/mA) and pressure (13.3 μV/MPa) with sensitivity better than 50 kPa. Disposable AE hydrophones may be an attractive alternative for clinical applications that require close monitoring of high intensity acoustic fields.
Original language | English (US) |
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Article number | 054701 |
Journal | Journal of Applied Physics |
Volume | 104 |
Issue number | 5 |
DOIs | |
State | Published - 2008 |
ASJC Scopus subject areas
- General Physics and Astronomy