BROWSE

Related Scientist

cinap's photo.

cinap
나노구조물리연구단
more info

ITEM VIEW & DOWNLOAD

Dynamic electro-optic response of graphene/graphitic flakes in nematic liquid crystals

DC Field Value Language
dc.contributor.authorWeiwei Tie-
dc.contributor.authorBhattacharyya S.S.-
dc.contributor.authorLim Y.J.-
dc.contributor.authorSang Won Lee-
dc.contributor.authorTae Hoon Lee-
dc.contributor.authorLee , Young Hee-
dc.contributor.authorSeung Hee Lee-
dc.date.available2015-04-20T06:48:18Z-
dc.date.created2014-08-11-
dc.date.issued2013-08-
dc.identifier.issn1094-4087-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/1276-
dc.description.abstractElectric field induced dynamic reorientation phenomenon of graphene/graphitic flakes in homogeneously aligned nematic liquid crystal (NLC) medium has been demonstrated by optical microscopy. The flakes reorient from parallel to perpendicular configuration with respect to boundary plates of confining cells for an applied field strength of as low as tens of millivolt per micrometer. After field removal the reoriented flakes recover to their initial state with the help of relaxation of NLC. Considering flake reorientation phenomenon both in positive and negative dielectric anisotropy NLCs, the reorientation process depends on interfacial Maxwell-Wagner polarization and NLC director reorientation. We propose a phenomenological model based on electric field induced potential energy of graphitic flakes and coupling contribution of positive NLC to generate the rotational kinetic energy for flake reorientation. The model successfully explains the dependence of flake reorientation time over flake shape anisotropy, electric-field strength, and flake area. Using present operating scheme it is possible to generate dark field-off state and bright field-on state, having application potential for electro-optic light modulation devices. ©2013 Optical Society of America.-
dc.language영어-
dc.publisherOPTICAL SOC AMER-
dc.subjectDirector reorientation-
dc.subjectElectric field induced-
dc.subjectElectro-optic response-
dc.subjectMaxwell-Wagner polarization-
dc.subjectNegative dielectric anisotropy-
dc.subjectNematic liquid crystals (NLC)-
dc.subjectPhenomenological modeling-
dc.subjectRotational kinetic energy-
dc.subjectElectric fields-
dc.subjectKinetics-
dc.subjectNematic liquid crystals-
dc.titleDynamic electro-optic response of graphene/graphitic flakes in nematic liquid crystals-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000323830500042-
dc.identifier.scopusid2-s2.0-84883211147-
dc.identifier.rimsid468ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorSang Won Lee-
dc.contributor.affiliatedAuthorTae Hoon Lee-
dc.contributor.affiliatedAuthorLee , Young Hee-
dc.identifier.doi10.1364/OE.21.019867-
dc.identifier.bibliographicCitationOPTICS EXPRESS, v.21, no.17, pp.19867 - 19879-
dc.relation.isPartOfOPTICS EXPRESS-
dc.citation.titleOPTICS EXPRESS-
dc.citation.volume21-
dc.citation.number17-
dc.citation.startPage19867-
dc.citation.endPage19879-
dc.date.scptcdate2018-10-01-
dc.description.wostc14-
dc.description.scptc15-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
314_oe-21-17-19867.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse