Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7703023 | Ultrasonics Sonochemistry | 2018 | 10 Pages |
Abstract
We describe the design, construction and characterisation of a broadband passive cavitation detector, with the specific aim of detecting low frequency components of periodic shock waves, with high sensitivity. A finite element model is used to guide selection of matching and backing layers for the shock wave passive cavitation detector (swPCD), and the performance is evaluated against a commercially available device. Validation of the model, and characterisation of the swPCD is achieved through experimental detection of laser-plasma bubble collapse shock waves. The final swPCD design is 20â¯dB more sensitive to the subharmonic component, from acoustic cavitation driven at 220â¯kHz, than the comparable commercial device. This work may be significant for monitoring cavitation in medical applications, where sensitive detection is critical, and higher frequencies are more readily absorbed by tissue.
Related Topics
Physical Sciences and Engineering
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Authors
Kristoffer Johansen, Jae Hee Song, Paul Prentice,