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Paper Abstract and Keywords
Presentation 2020-01-30 10:35
A numerical study of structural coloration by a slanted grating
Hideaki Wakabayashi (Okayama Pref. Univ.), Masamitsu Asai (Kindai Univ.), Jiro Yamakita (Okayama Pref. Univ.) PN2019-46 EMT2019-86 MWP2019-60
Abstract (in Japanese) (See Japanese page) 
(in English) The stripe of a tropical freshwater fish ``neon tetra'' consists of many iridophores, in which slanted reflecting platelets are periodically arranged. The neon tetra has structural coloration and changes the color of a stripe by changing the slanted angle and the interval of the platelets in response to the surrounding conditions. We consider a slanted subwavelength grating modeled on the iridophore of a neon tetra. This paper reformulates the matrix eigenvalues method for an analytical method of the three-dimensional scattering problem of a dielectric grating with a slanted grating vector. Calculating the reflection spectrum, the tristimulus values of standard RGB (sRGB) and the xy chromaticity coordinates for slanted gratings, we numerically show that the color changes depending on the slanted angles.
Keyword (in Japanese) (See Japanese page) 
(in English) structural coloration / slanted dielectric grating / grating vector / matrix eigenvalues method, / sRGB / xy chromaticity coordinates / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 403, EMT2019-86, pp. 67-72, Jan. 2020.
Paper # EMT2019-86 
Date of Issue 2020-01-23 (PN, EMT, MWP) 
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 PN2019-46 EMT2019-86 MWP2019-60

Conference Information
Conference Date 2020-01-30 - 2020-01-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Dosisha Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMT 
Conference Code 2020-01-MWP-PN-EMT-PEM-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A numerical study of structural coloration by a slanted grating 
Sub Title (in English)  
Keyword(1) structural coloration  
Keyword(2) slanted dielectric grating  
Keyword(3) grating vector  
Keyword(4) matrix eigenvalues method,  
Keyword(5) sRGB  
Keyword(6) xy chromaticity coordinates  
1st Author's Name Hideaki Wakabayashi  
1st Author's Affiliation Okayama Prefectural University (Okayama Pref. Univ.)
2nd Author's Name Masamitsu Asai  
2nd Author's Affiliation Kindai University (Kindai Univ.)
3rd Author's Name Jiro Yamakita  
3rd Author's Affiliation Okayama Prefectural University (Okayama Pref. Univ.)
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Date Time 2020-01-30 10:35:00 
Presentation Time 25 
Registration for EMT 
Paper # IEICE-PN2019-46,IEICE-EMT2019-86,IEICE-MWP2019-60 
Volume (vol) IEICE-119 
Number (no) no.402(PN), no.403(EMT), no.404(MWP) 
Page pp.67-72 
#Pages IEICE-6 
Date of Issue IEICE-PN-2020-01-23,IEICE-EMT-2020-01-23,IEICE-MWP-2020-01-23 

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