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Paper Abstract and Keywords
Presentation 2022-07-29 13:55
Relationship between the acoustic field and the rotation speed of a small object on noncontact rotation using ultrasound
Eimei Yamamoto, Natsumi Nakakoka, Daisuke Koyama (Doshisha Univ.) US2022-23
Abstract (in Japanese) (See Japanese page) 
(in English) Small objects can be trapped and manipulated by an ultrasound standing wave, and this technique is expected to be applied to noncontact transportation and measurements of physical properties of liquids. In this report, the relationship between the ambient acoustic field and the rotation speed of a small object in noncontact high-speed rotation was investigated. The experimental system consists of a vibrating disc with four bolt-clamped Langevin-type transducers and a reflector, and an acoustic standing wave is generated between them. The effects of the tilt angle of the reflector with respect to the vibrator on the rotation speed of the object were investigated. When the tilt angle of the reflector was 0° to 1.2°, the object was trapped in the air by the standing-wave component in the vertical direction and rotated by the traveling-wave component propagating in the horizontal direction. The maximum sound pressure amplitude and the rotation speed of the object were changed with the tilt angle of the reflector, and a larger sound pressure amplitude gave a larger rotation speed.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasound / noncontact manipulation / levitating / rotation / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 141, US2022-23, pp. 17-21, July 2022.
Paper # US2022-23 
Date of Issue 2022-07-22 (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 US2022-23

Conference Information
Committee US  
Conference Date 2022-07-29 - 2022-07-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Univ. (Chikushi Campus) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Material characterization, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2022-07-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Relationship between the acoustic field and the rotation speed of a small object on noncontact rotation using ultrasound 
Sub Title (in English)  
Keyword(1) Ultrasound  
Keyword(2) noncontact manipulation  
Keyword(3) levitating  
Keyword(4) rotation  
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1st Author's Name Eimei Yamamoto  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Natsumi Nakakoka  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Daisuke Koyama  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2022-07-29 13:55:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2022-23 
Volume (vol) vol.122 
Number (no) no.141 
Page pp.17-21 
#Pages 5 
Date of Issue 2022-07-22 (US) 

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