Giant light deflection via electro-mechanical modulation of liquid crystals

Imamura, Koki; Yoshida, Hiroyuki; Ozaki, Masanori

Applied Physics Letters, 2019, 114(6), 061901-061901

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Identifier to cite or link to this item: https://hdl.handle.net/11094/75687

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Title
Giant light deflection via electro-mechanical modulation of liquid crystals
Creator
CreatorName
Imamura, Koki
NRID
1000080550045 1000080550045
researchmap permalink
hiroyukiyoshida hiroyukiyoshida
Scopus Author ID
55628543086 55628543086
CreatorName
Yoshida, Hiroyuki
NRID
1000050204186 1000050204186
ORCID
0000-0002-9556-4225 0000-0002-9556-4225
researchmap permalink
read0014092 read0014092
Scopus Author ID
55490143900 55490143900
CreatorName
Ozaki, Masanori
Description
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Koki Imamura, Hiroyuki Yoshida, and Masanori Ozaki, Appl. Phys. Lett. 114, 061901 (2019) and may be found at https://doi.org/10.1063/1.5083980
Abstract
Liquid crystals (LCs) are matter with fluidity and anisotropy and have been used in various electro-optic devices for their capabilityto modulate the refractive index by voltage. Here, we show that LCs are capable of electro-mechanically modulating light tocause giant light deflection at low voltages (exceeding 64° at 1.0 V). We use a composite material where polymerized cholestericLC particles that show optical Bragg reflection float in a nematic LC medium. The polymer-particles are elastically coupled withthe host director through their surface molecular anchoring and rotate from a face-on to side-on configuration at the Frederiktransition. Rigid-body rotation of the reflection plane causes light deflection, which is well reproducible and can be modelled theoretically.Our findings demonstrate the capability of LCs as a micro-electrical-mechanical system platform, which are potentiallyuseful for large-area light-controlling applications. This study was supported by a Grant-in-Aid for JSPS Fellows (18J10027), JSPS KAKENHI (17H02766), and JST PRESTO (JPMJPR151D). The authors thank Merck Performance Materials for providing the chiral dopant.
Publisher
AIP Publishing
Source Title
Applied Physics Letters
Volume (Issue)
114(6)
Page
061901-061901
Date of Issued
2019-02-11
Language
English
Handle URL
https://hdl.handle.net/11094/75687
PISSN
00036951
eISSN
10773118
NCID
AA00543431
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1063/1.5083980
Access Rights
open access
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article