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Paper Abstract and Keywords
Presentation 2018-01-24 10:55
Measurement of dynamic interfacial tension by shape analysis of flying droplets
Natsuki Yamaoka, Ryohsuke Yokota, Ryo Asai, Taichi Hirano, Shujiro Mitani, Keiji Sakai (UTokyo) US2017-104
Abstract (in Japanese) (See Japanese page) 
(in English) We developed a method for simultaneous measurement of dynamic surface and interfacial tension in the time range from hundreds of microseconds to a few milliseconds. When two immiscible liquid droplets collide in midair, the equilibrium droplet shape after collision is determined by the balance of surface and interfacial tension and the volume of each droplet before collision. In particular, two droplets showing incomplete wetting will make an anisotropic shape, Daruma-shape, in which one droplet with higher surface tension covers the other droplet. In our method, microdroplets emitted by continuous inkjet system are obliquely collided, and by shape analysis of incompletely-wetting Daruma-shape flying droplets, the surface and interfacial tension which changes temporally as progress of surfactant adsorption can be observed. In this work, the measurements of dynamic surface and interfacial tension of surfactant (SDS, Tween 20, SDBS) aqueous solutions and hexadecane were successfully carried out.
Keyword (in Japanese) (See Japanese page) 
(in English) Dynamic Interfacial Tension / Dynamic Surface Tension / Inkjet / Surfactant / Hexadecane / Shape Analysis / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 398, US2017-104, pp. 119-123, Jan. 2018.
Paper # US2017-104 
Date of Issue 2018-01-16 (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)
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Conference Information
Committee US EA  
Conference Date 2018-01-23 - 2018-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To US 
Conference Code 2018-01-US-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement of dynamic interfacial tension by shape analysis of flying droplets 
Sub Title (in English)  
Keyword(1) Dynamic Interfacial Tension  
Keyword(2) Dynamic Surface Tension  
Keyword(3) Inkjet  
Keyword(4) Surfactant  
Keyword(5) Hexadecane  
Keyword(6) Shape Analysis  
Keyword(7)  
Keyword(8)  
1st Author's Name Natsuki Yamaoka  
1st Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
2nd Author's Name Ryohsuke Yokota  
2nd Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
3rd Author's Name Ryo Asai  
3rd Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
4th Author's Name Taichi Hirano  
4th Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
5th Author's Name Shujiro Mitani  
5th Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
6th Author's Name Keiji Sakai  
6th Author's Affiliation Institute of Industrial Science, The University of Tokyo (UTokyo)
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Speaker Author-1 
Date Time 2018-01-24 10:55:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2017-104 
Volume (vol) vol.117 
Number (no) no.398 
Page pp.119-123 
#Pages 5 
Date of Issue 2018-01-16 (US) 

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