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Paper Abstract and Keywords
Presentation 2020-01-31 13:50
Comparative Study of THz sensors with InSb elements
Jun Nakano, Jun Shibayama, Junji Yamauchi, Hisamatsu Nakano (Hosei Univ.) EST2019-97
Abstract (in Japanese) (See Japanese page) 
(in English) We investigate and compare terahertz (THz) sensors with indium antimonide (InSb) elements. THz sensors with cross-dipole, disk and sphere elements made of InSb are analyzed using the finite-difference time-domain method. The full width at half maximum (or half minimum), sensitivity, and figure of merit (FoM) are used to quantitatively evaluate the sensor performance. First, we investigate the transmittance of the sensors with respect to changes in the refractive index of the analyte. As the refractive index is increased, the peak frequency shifts to the low frequency side. This peak frequency shift leads to a possibility to detect the value of the refractive index. Next, it is shown that the FoM can be improved by adjusting the length of each element. Finally, we compare the performance of the three sensors. It is shown that the cross-dipole sensor provides a high FoM compared to the disk and sphere sensors.
Keyword (in Japanese) (See Japanese page) 
(in English) Periodic boundary condition (PBC) / Indium antimonide (InSb) / Terahertz (THz) wave / Finite-difference time-domain (FDTD) method / Figure of merit (FoM) / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 407, EST2019-97, pp. 91-96, Jan. 2020.
Paper # EST2019-97 
Date of Issue 2020-01-23 (EST) 
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 EST2019-97

Conference Information
Committee EST  
Conference Date 2020-01-30 - 2020-01-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Beppu International Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Simulation Technique, etc. 
Paper Information
Registration To EST 
Conference Code 2020-01-EST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparative Study of THz sensors with InSb elements 
Sub Title (in English)  
Keyword(1) Periodic boundary condition (PBC)  
Keyword(2) Indium antimonide (InSb)  
Keyword(3) Terahertz (THz) wave  
Keyword(4) Finite-difference time-domain (FDTD) method  
Keyword(5) Figure of merit (FoM)  
1st Author's Name Jun Nakano  
1st Author's Affiliation Hosei University (Hosei Univ.)
2nd Author's Name Jun Shibayama  
2nd Author's Affiliation Hosei University (Hosei Univ.)
3rd Author's Name Junji Yamauchi  
3rd Author's Affiliation Hosei University (Hosei Univ.)
4th Author's Name Hisamatsu Nakano  
4th Author's Affiliation Hosei University (Hosei Univ.)
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Date Time 2020-01-31 13:50:00 
Presentation Time 25 
Registration for EST 
Paper # IEICE-EST2019-97 
Volume (vol) IEICE-119 
Number (no) no.407 
Page pp.91-96 
#Pages IEICE-6 
Date of Issue IEICE-EST-2020-01-23 

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