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Paper Abstract and Keywords
Presentation 2019-01-22 14:00
[Poster Presentation] Effect of liquid crystal materials on ultrasound optical lenses
Marina Fukui, Yuki Harada, Daisuke Koyama, Akira Emoto (Doshisha Univ.), Kentaro Nakamura (Tokyo Tech.), Mami Matsukawa (Doshisha Univ.) US2018-99
Abstract (in Japanese) (See Japanese page) 
(in English) Nematic liquid crystals have high liquidity and are widely used in optical devices such as liquid crystal displays since their molecular orientations can be controlled easily by electric field.
In this report, we investigated a technique to control the molecular orientation of nematic liquid crystals using ultrasound and the application to
a variable focus lens. The ultrasound optical lens consists of a liquid crystal layer with the thickness of 50 μm and a PZT ring transducer. The optical lens changed the focal length and acted as a convex lens under ultrasound
excitation. The effects of material properties of liquid crystals (birefringence, viscosity, and dielectric anisotropy) on the optical characteristics of the lens were investigated. The lens using a liquid crystal with low viscosity can change the focal point with low frequency.
Keyword (in Japanese) (See Japanese page) 
(in English) Nematic liquid crystal / ultrasound / acoustic radiation force / variable-focus lens / / / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 409, US2018-99, pp. 99-102, Jan. 2019.
Paper # US2018-99 
Date of Issue 2019-01-15 (US) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 US2018-99

Conference Information
Committee EA US  
Conference Date 2019-01-22 - 2019-01-23 
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, Ultrasonics, and Related Topics 
Paper Information
Registration To US 
Conference Code 2019-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effect of liquid crystal materials on ultrasound optical lenses 
Sub Title (in English)  
Keyword(1) Nematic liquid crystal  
Keyword(2) ultrasound  
Keyword(3) acoustic radiation force  
Keyword(4) variable-focus lens  
1st Author's Name Marina Fukui  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Yuki Harada  
2nd Author's Affiliation Doshisha University (Doshisha Univ.)
3rd Author's Name Daisuke Koyama  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
4th Author's Name Akira Emoto  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
5th Author's Name Kentaro Nakamura  
5th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
6th Author's Name Mami Matsukawa  
6th Author's Affiliation Doshisha University (Doshisha Univ.)
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Date Time 2019-01-22 14:00:00 
Presentation Time 120 
Registration for US 
Paper # IEICE-US2018-99 
Volume (vol) IEICE-118 
Number (no) no.409 
Page pp.99-102 
#Pages IEICE-4 
Date of Issue IEICE-US-2019-01-15 

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