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Paper Abstract and Keywords
Presentation 2023-05-18 13:25
Analysis of acoustic streaming driving force on electronic chip parts levitated in aerial ultrasonic standing waves
Yuji Wada, Kentaro Nakamura (Tokyo Tech) US2023-4
Abstract (in Japanese) (See Japanese page) 
(in English) In the ultrasonic levitation technology of small chip parts, some parts are difficult to be levitated at frequencies below 40 kHz, but can be levitated at frequencies above 70 kHz. According to the theory of acoustic radiation force, the ratio of holding force to gravity does not decrease as the volume of the object to be levitated decreases, but the acoustic streaming may inhibit levitation. An viscoacoustic analysis was conducted considering the viscous boundary layer, and the fluid pressure of the acoustic flow was calculated by simulating the acoustic streaming via the acoustic flow driving force theory. As a result, the disturbing force due to the acoustic streaming exceeded the holding force as the volume of the floating object decreased. When the dimension of levitated object is less than 20 times the boundary layer thickness, it cannot be lifted regardless of the input sound pressure amplitude.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasonic levitation / acoustic radiation force / acoustic streaming / standing wave / finite element method / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 36, US2023-4, pp. 18-23, May 2023.
Paper # US2023-4 
Date of Issue 2023-05-11 (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 US2023-4

Conference Information
Committee US  
Conference Date 2023-05-18 - 2023-05-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Surugadai Campus, Nihon University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear acoustics, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2023-05-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis of acoustic streaming driving force on electronic chip parts levitated in aerial ultrasonic standing waves 
Sub Title (in English)  
Keyword(1) ultrasonic levitation  
Keyword(2) acoustic radiation force  
Keyword(3) acoustic streaming  
Keyword(4) standing wave  
Keyword(5) finite element method  
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1st Author's Name Yuji Wada  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Kentaro Nakamura  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2023-05-18 13:25:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2023-4 
Volume (vol) vol.123 
Number (no) no.36 
Page pp.18-23 
#Pages 6 
Date of Issue 2023-05-11 (US) 

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