| Issue |
MATEC Web Conf.
Volume 328, 2020
XXII. International Scientific Conference – The Application of Experimental and Numerical Methods in Fluid Mechanics and Energy 2020 (AEaNMiFMaE-2020)
|
|
|---|---|---|
| Article Number | 05003 | |
| Number of page(s) | 7 | |
| Section | Visualization of Flow | |
| DOI | https://doi.org/10.1051/matecconf/202032805003 | |
| Published online | 18 November 2020 | |
Sterilization of Biofilm in Foam Using a Single Cavitation Bubble
1 Department of Physical Measurement, Technical University of Liberec, Institute for Nanomaterials, Advanced Technology and Innovation, Studentska 1402/2, Liberec 1, 461 17, Czech Republic
2 Department of Environmental Technology, Technical University of Liberec, Institute for Nanoma-terials, Advanced Technology and Innovation, Studentska 1402/2, Liberec 1, 461 17, Czech Republic
3 Faculty of Mechatronics Informatics and Interdisciplinary Studies, Technical University of Liberec, Studentska 1402/2, Liberec 1, 461 17, Czech Republic
* Corresponding author: petr.schovanec@tul.cz
This article presents the sterilization of bacteria using cavitation bubbles. Cavitation generated by ultrasound creates a cavitation cloud. Therefore is more advantageous to generate the cavitation bubbles by laser-induced breakdown, because it is possible to generate individual bubbles for the purpose of study single impact and physical mechanism of acting. The cavitation bubble is generated by a Nd: YAG 532nm laser beam, a short 10ns pulse. Here, we used optics to focus the laser beam and a high-speed camera to visualize characteristics the bubble. We used the method of long-distance microscopy and shadowgraph lightening for the visualization. We used the particle image velocimetry (PIV) method to determine the interaction of the bubble with the surrounding liquid and solid surface. The main goal of the research is to use cavitation to sterilize bacteria and biofilm in impact of single bubble collapse on living cells.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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