Fabrication of micro-grating structures by direct laser writing based on two photon process and their liquid crystal alignment abilities

Lee, Chee Heng; Yoshida, Hiroyuki; Miura, Yusuke et al.

IEICE Transactions on Electronics, 2008, E91-C(10), 1581-1586

Number of Access:438（2025-09-02 13:02 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/75684

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Title
Fabrication of micro-grating structures by direct laser writing based on two photon process and their liquid crystal alignment abilities
Creator
CreatorName
Lee, Chee Heng
NRID
1000080550045 1000080550045
researchmap permalink
hiroyukiyoshida hiroyukiyoshida
Scopus Author ID
55628543086 55628543086
CreatorName
Yoshida, Hiroyuki
CreatorName
Miura, Yusuke
NRID
1000080304020 1000080304020
ORCID
0000-0003-3142-1193 0000-0003-3142-1193
researchmap permalink
read0054804 read0054804
Scopus Author ID
35413649300 35413649300
CreatorName
Fujii, Akihiko
NRID
1000050204186 1000050204186
ORCID
0000-0002-9556-4225 0000-0002-9556-4225
researchmap permalink
read0014092 read0014092
Scopus Author ID
55490143900 55490143900
CreatorName
Ozaki, Masanori
Subject
photo-fabrication
liquid crystal alignment
two photon excitation
grating
Abstract
The authors have demonstrated the local alignment of nematic liquid crystal with local micro-grating structure fabricated by the curing of an ultraviolet curable material via a three dimensional micro-fabrication technique known as two photon excitation direct laser writing [1]. The molecular alignment of the nematic liquid crystals on the fabricated micro-grating structures was firstly investigated by the observations of a local twisted nematic region in a liquid crystal cell made of a substrate with locally fabricated micro-grating structure and a counter substrate with rubbed polyimide. The optical polarizing microscope observation of the micro-grating structures indicated that liquid crystals molecules have aligned parallel to the grooves of the micro-grating structure and that local alignment was successfully achieved. The alignment characteristics of the liquid crystals on these micro-gratings was also investigated and discussed quantitatively in details through the measurement of anchoring energy by the conventional torque balance method and the Berreman method. The azimuthal anchoring energy for the micro-grating was found to be in the order of 10-6 J/m2 and inversely proportional to the grating period.
Publisher
電子情報通信学会
The Institute of Electronics, Information and Communication Engineers
Source Title
IEICE Transactions on Electronics
Volume (Issue)
E91-C(10)
Page
1581-1586
Date of Issued
2008-10-01
Language
English
Handle URL
https://hdl.handle.net/11094/75684
PISSN
09168524
eISSN
17451353
NCID
AA10826283
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1093/ietele/e91-c.10.1581
Access Rights
open access
CopyRight
copyright©2008 IEICE
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article