Abstract
Most HIFU-induced cavitation applications use low frequencies (< 5 MHz), limiting the spatial precision of material erosion. Here, high-frequency (12 MHz) HIFU-induced cavitation was used to locally remove material from aluminium and thin film samples. Control over pit volume and surface area (pits with 20 - 200 µm diameter) was demonstrated by varying sonication parameters. Pit surface areas and volumes were quantified with a scanning acoustic microscope. Increasing the number of bursts increased the eroded volume but also caused a greater variation in pit area, owing to the stochasticity of inertial cavitation. Increasing the sonication amplitude increased the erosion area, as a larger area of the beam exceeded the local cavitation threshold. These results will be used to find suitable sonication parameters for localized HIFU surface-sampling.
Original language | English |
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Title of host publication | 2022 IEEE International Ultrasonics Symposium (IUS) |
Publisher | IEEE |
Publication date | 1 Dec 2022 |
Pages | 1-4 |
ISBN (Print) | 978-1-6654-7813-7 |
ISBN (Electronic) | 978-1-6654-6657-8 |
DOIs | |
Publication status | Published - 1 Dec 2022 |
MoE publication type | A4 Article in conference proceedings |
Event | 2022 IEEE International Ultrasonics Symposium (IUS) - Venice, Italy Duration: 10 Oct 2022 → 13 Oct 2022 |
Publication series
Name | |
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ISSN (Print) | 1948-5719 |
ISSN (Electronic) | 1948-5727 |
Fields of Science
- 114 Physical sciences
- Ultrasound
- HIFU
- Material removal