Johansen, K., Song, J. H. and Prentice, P. (2018) Performance characterisation of a passive cavitation detector optimised for subharmonic periodic shock waves from acoustic cavitation in MHz and sub-MHz ultrasound. Ultrasonics Sonochemistry, 43, pp. 146-155. (doi: 10.1016/j.ultsonch.2018.01.007)
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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 20 dB more sensitive to the subharmonic component, from acoustic cavitation driven at 220 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.
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Johansen, Kristoffer and Prentice, Dr Paul and Song, Dr Jae Hee |
| Authors: | Johansen, K., Song, J. H., and Prentice, P. |
| College/School: | College of Science and Engineering > School of Engineering College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Ultrasonics Sonochemistry |
| Publisher: | Elsevier |
| ISSN: | 1350-4177 |
| ISSN (Online): | 1873-2828 |
| Published Online: | 10 January 2018 |
| Copyright Holders: | Copyright © 2018 Elsevier B.V. |
| First Published: | First published in Ultrasonics Sonochemistry 43:146-155 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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