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Paper Abstract and Keywords
Presentation 2017-01-25 10:30
[Poster Presentation] Mechanical resonances of microorganism by ultrasonic cavitation
Yoshinori Ike, Atsushi Yabunaka, Ken Yamamoto (Kansai Univ.) US2016-77
Abstract (in Japanese) (See Japanese page) 
(in English) We report details of cavitation bubble-induced cell oscillation. In the study, we evaluated inactivation of specific microorganisms (including fungi, bacteria, and algae) by ultrasound at different frequencies. The fungus Saccharomyces cerevisiae, the bacteria Escherichia coli, and three kinds of algae were tested. S. cerevisiae and the algae showed frequency dependence of inactivation. In contrast, activation of E. coli did not depend on frequency. The resonances frequencies and area deformations of the cells were analyzed by shell oscillation. The resonance frequencies were each on the order of several megahertz, consistent with the experimental results. Cells that showed constant deactivation at all frequencies showed a larger change in cell surface area compared with other microorganisms. Such cells are assumed to have been inactivated by bubble-induced mechanical oscillation of the cell wall.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic cavitation / microorganism / mechanical resonance / cells oscillations / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 419, US2016-77, pp. 29-33, Jan. 2017.
Paper # US2016-77 
Date of Issue 2017-01-18 (US) 
ISSN Print edition: ISSN 0913-5685    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 US2016-77

Conference Information
Committee EA US  
Conference Date 2017-01-25 - 2017-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Doshisha Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics, and Related Topics 
Paper Information
Registration To US 
Conference Code 2017-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Mechanical resonances of microorganism by ultrasonic cavitation 
Sub Title (in English)  
Keyword(1) Ultrasonic cavitation  
Keyword(2) microorganism  
Keyword(3) mechanical resonance  
Keyword(4) cells oscillations  
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1st Author's Name Yoshinori Ike  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Atsushi Yabunaka  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Ken Yamamoto  
3rd Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2017-01-25 10:30:00 
Presentation Time 90 minutes 
Registration for US 
Paper # US2016-77 
Volume (vol) vol.116 
Number (no) no.419 
Page pp.29-33 
#Pages 5 
Date of Issue 2017-01-18 (US) 

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