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Paper Abstract and Keywords
Presentation 2016-01-28 14:25
Investigation of the ultrasonic irradiation for microcapsules to understand the disruption mechanism of algae
Masaki Kurokawa, Yoshinori Ike, Takashi ikeno, Ken Yamamoto (Kansai Univ.) US2015-86
Abstract (in Japanese) (See Japanese page) 
(in English) Algae can be disrupted by ultrasonication; however, the mechanism of disruption is still unclear. Previously, the frequency dependence of disruption has been investigated using suspensions of the algae Chaetoceros gracilis, C. calcitrans, and Nannochloropsis sp. at 20 kHz, 400 kHz, 1.0 MHz, 2.2 MHz, 3.3 MHz, and 4.3 MHz, and the frequency depended on the species of algae. Because the disruption depends on the physical properties of the algae, we focused on the mechanical resonance of the algae. In this study, we performed the same disruption experiment on microcapsules, which have a simpler structure than algae and have physical properties, such as elastic modulus and size, that can be altered. The resonance frequency of the microcapsules was simultaneously estimated and compared with the results. The microcapsule disruption was frequency dependent and followed the same trend as the estimated resonance frequency. Therefore, the ultrasonic disruption of microcapsules and algae is caused by their mechanical resonance.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic cavitation / Algae / Microcapsule / Mechanical resonance / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 423, US2015-86, pp. 17-20, Jan. 2016.
Paper # US2015-86 
Date of Issue 2016-01-21 (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 US2015-86

Conference Information
Committee US EA  
Conference Date 2016-01-28 - 2016-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai University, Centenary Memorial Hall 
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 2016-01-US-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Investigation of the ultrasonic irradiation for microcapsules to understand the disruption mechanism of algae 
Sub Title (in English)  
Keyword(1) Ultrasonic cavitation  
Keyword(2) Algae  
Keyword(3) Microcapsule  
Keyword(4) Mechanical resonance  
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1st Author's Name Masaki Kurokawa  
1st Author's Affiliation Kansai University (Kansai Univ.)
2nd Author's Name Yoshinori Ike  
2nd Author's Affiliation Kansai University (Kansai Univ.)
3rd Author's Name Takashi ikeno  
3rd Author's Affiliation Kansai University (Kansai Univ.)
4th Author's Name Ken Yamamoto  
4th Author's Affiliation Kansai University (Kansai Univ.)
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Speaker Author-1 
Date Time 2016-01-28 14:25:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2015-86 
Volume (vol) vol.115 
Number (no) no.423 
Page pp.17-20 
#Pages 4 
Date of Issue 2016-01-21 (US) 

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