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@ARTICLE{Vieweg:9012,
author = {Vieweg, N. and Jansen, C. and Shakfa, M.K. and Scheller, M.
and Krumbholz, N. and Wilk, R. and Mikulics, M. and Koch,
M.},
title = {{M}olecular properties of liquid crystals in the terahertz
frequency range},
journal = {Optics express},
volume = {18},
issn = {1094-4087},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PreJuSER-9012},
pages = {6097 - 6107},
year = {2010},
note = {Record converted from VDB: 12.11.2012},
abstract = {We report on a first experimental study of the molecular
properties of nematic liquid crystals in the terahertz
range. In the beginning, we extract the frequency and
temperature dependent refractive index and absorption
coefficient of the cyanobiphenyls 5CB, 6CB and 7CB from
terahertz time domain spectroscopy measurements and
investigate the impact of the alkyl chain length on the
macroscopic liquid crystal characteristics, focusing
especially on the pronounced odd and even effect. Next, we
deduce the principle polarizabilities and the order
parameter S by applying Vuks' approximation and Haller's
approach. On this basis, we calculate the main
polarizabilities along the longitudinal and transverse axis
and link the observed terahertz properties to the molecular
structure of the liquid crystals.},
keywords = {Computer Simulation / Light / Liquid Crystals: chemistry /
Models, Chemical / Refractometry / Scattering, Radiation /
Terahertz Radiation / J (WoSType)},
cin = {IBN-1 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)VDB799 / $I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Optics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:20389631},
UT = {WOS:000276002500081},
doi = {10.1364/OE.18.006097},
url = {https://juser.fz-juelich.de/record/9012},
}