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| Presentation | 2021-11-26 13:25 Effects of frequency and surfactant addition on ultrasonic pitting on fine particles Fumiya Sugino, Ken Yamamoto (Kansai Univ.)  US2021-41 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Cavitation bubbles generated by ultrasonic irradiation of liquid physically act on fine samples (e.g., bacteria, algae, microcapsules) via mechanical effects such as microjets, shear stress, mechanical resonance, and shock. Microjets form small indentations called pits on the surface of samples. In this study, the effects of frequency and surfactant addition were investigated to understand the dominant factors underlying pit formation on the surface of fine particles. A suspension of starch particles was irradiated with ultrasound, and the number of pits formed on the sample surface was evaluated by scanning electron microscopy. In addition, the bubble size at each ultrasound frequency was evaluated by laser diffraction particle size analysis, and the relationship between the number of pits and bubble size was considered along with the formation mechanism of pits. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonic cavitation / Ultrasonic pitting / Microjet / Surfactant / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 272, US2021-41, pp. 7-12, Nov. 2021. | |
| Paper # | US2021-41 | |
| Date of Issue | 2021-11-19 (US) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2021-41 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2021-11-26 - 2021-11-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ultrasonics, etc. |
| Paper Information | |
| Registration To | US |
| Conference Code | 2021-11-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of frequency and surfactant addition on ultrasonic pitting on fine particles |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic cavitation |
| Keyword(2) | Ultrasonic pitting |
| Keyword(3) | Microjet |
| Keyword(4) | Surfactant |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Fumiya Sugino |
| 1st Author's Affiliation | Kansai University (Kansai Univ.) |
| 2nd Author's Name | Ken Yamamoto |
| 2nd Author's Affiliation | Kansai University (Kansai Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-11-26 13:25:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2021-41 |
| Volume (vol) | vol.121 |
| Number (no) | no.272 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2021-11-19 (US) |
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