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; Fujii, Akihiko; Ozaki, Masanori

doi:https://doi.org/10.1093/ietele/e91-c.10.1581

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

アクセス数:427件（2025-07-15 06:29 集計）

固定URL: https://hdl.handle.net/11094/75684

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タイトル	Fabrication of micro-grating structures by direct laser writing based on two photon process and their liquid crystal alignment abilities
著者	著者名 Lee, Chee Heng
	NRID 1000080550045 1000080550045 researchmap permalink hiroyukiyoshida hiroyukiyoshida Scopus Author ID 55628543086 55628543086 著者名 Yoshida, Hiroyuki
	著者名 Miura, Yusuke
	NRID 1000080304020 1000080304020 ORCID 0000-0003-3142-1193 0000-0003-3142-1193 researchmap permalink read0054804 read0054804 Scopus Author ID 35413649300 35413649300 著者名 Fujii, Akihiko
	NRID 1000050204186 1000050204186 ORCID 0000-0002-9556-4225 0000-0002-9556-4225 researchmap permalink read0014092 read0014092 Scopus Author ID 55490143900 55490143900 著者名 Ozaki, Masanori
キーワード等	photo-fabrication
	liquid crystal alignment
	two photon excitation
	grating
抄録	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.
出版者	電子情報通信学会
出版者	The Institute of Electronics, Information and Communication Engineers
収録物名	IEICE Transactions on Electronics
巻(号)	E91-C(10)
ページ	1581-1586
刊行年月	2008-10-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/75684
PISSN	09168524
eISSN	17451353
NCID	AA10826283
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1093/ietele/e91-c.10.1581
アクセス権	open access
権利情報	copyright©2008 IEICE
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	IEICE Transactions on Electronics. 2008, E91-C(10), p. 1581-1586
DC.title	Fabrication of micro-grating structures by direct laser writing based on two photon process and their liquid crystal alignment abilities
DC.creator	Lee, Chee Heng
	Yoshida, Hiroyuki
	Miura, Yusuke
	Fujii, Akihiko
	Ozaki, Masanori
DC.publisher	電子情報通信学会
DC.publisher	The Institute of Electronics, Information and Communication Engineers
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2008-10-01
DC.identifier	https://doi.org/10.1093/ietele/e91-c.10.1581
DC.subject	photo-fabrication
	liquid crystal alignment
	two photon excitation
	grating
DCTERMS.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.
DC.rights	copyright©2008 IEICE
DC.format	75684
citation_title	Fabrication of micro-grating structures by direct laser writing based on two photon process and their liquid crystal alignment abilities
citation_author	Lee, Chee Heng
	Yoshida, Hiroyuki
	Miura, Yusuke
	Fujii, Akihiko
	Ozaki, Masanori
citation_publisher	電子情報通信学会
citation_language	英語
citation_date	2008-10-01
citation_journal_title	IEICE Transactions on Electronics
citation_volume	E91-C
citation_issue	10
citation_firstpage	1581
citation_lastpage	1586
citation_doi	https://doi.org/10.1093/ietele/e91-c.10.1581
citation_public_url	https://hdl.handle.net/11094/75684

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

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