About: Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the present work the rheological characterization (steady state and oscillatory data) of a non-chiral low molecular weight liquid crystalline diol (denoted as HBP 6/6) exhibiting the nematic and smetic phases over a broad temperature range is presented. A non-newtonian flow behaviour was found. This result, together with the progressive increase of the viscosity observed near the nematic – isotropic transition, suggests that the material behaves like a polymer, due to hydrogen bonding. The effect of an electric field applied normal to the flow direction, on the steady state in the nematic phase has been also established. An electrorheological effect shows up, as an enhancement of the apparent viscosity, due to the positive dielectric anisotropy of this material. It has been found that the increase of the apparent viscosity scales linearly with the applied field strength. In the present work the rheological characterization (steady state and oscillatory data) of a non-chiral low molecular weight liquid crystalline diol (denoted as HBP 6/6) exhibiting the nematic and smetic phases over a broad temperature range is presented. A non-newtonian flow behaviour was found. This result, together with the progressive increase of the viscosity observed near the nematic – isotropic transition, suggests that the material behaves like a polymer, due to hydrogen bonding. The effect of an electric field applied normal to the flow direction, on the steady state in the nematic phase has been also established. An electrorheological effect shows up, as an enhancement of the apparent viscosity, due to the positive dielectric anisotropy of this material. It has been found that the increase of the apparent viscosity scales linearly with the applied field strength. (en)
Title	Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field (en)
skos:prefLabel	Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field (en)
skos:notation	RIV/68378271:_____/12:00377073!RIV13-GA0-68378271
http://linked.open...avai/predkladatel	Fyzikální ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0047), P(GAP204/11/0723), P(IAA100100911), Z(AV0Z10100520)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Bubnov, Alexej Kašpar, Miroslav Hamplová, Věra
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	165534
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/12:00377073
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	rheological characterization,; liquid crystalline diol; mesomorphic behaviour; electrorheological effect (en)
http://linked.open.../riv/klicoveSlovo	electrorheological effect liquid crystalline diol mesomorphic behaviour rheological characterization
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[8900785B1BB2]
http://linked.open...i/riv/nazevZdroje	Liquid Crystals
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Molecular structure and phases of new polar liquid crystals New functional materials with fluorinated chains and photosensitive groups in mesogenic molecules Multifunctional self-assembling materials on nano-level
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	39
http://linked.open...iv/tvurceVysledku	Bubnov, Alexej Hamplová, Věra Kašpar, Miroslav Casquilho, J. P. Cidade, M. T. Pereira, G.
http://linked.open...ain/vavai/riv/wos	000300394100006
http://linked.open...n/vavai/riv/zamer	Specific effects in condensed systems with reduced dimension and broken symmetry
issn	0267-8292
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1080/02678292.2011.628702
is http://linked.open...avai/riv/vysledek of	Rheological characterization of a liquid crystalline diol and its dependence with an applied electric field

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