Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy

In the Lehmann-type effect of rotation of small single crystals of chiral substances during their dissolution at the top of a nematic droplet the angular velocity of rotation of the chiral dopant crystals is experimentally shown to be dependent on the crystal dimensions, helical twisting power of th...

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Datum:2007
Hauptverfasser: Gvozdovskyy, I.A., Lisetski, L.N.
Format: Artikel
Sprache:English
Veröffentlicht: НТК «Інститут монокристалів» НАН України 2007
Schriftenreihe:Functional Materials
Online Zugang:https://nasplib.isofts.kiev.ua/handle/123456789/136540
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Zitieren:Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy / I.A. Gvozdovskyy, L.N. Lisetski // Functional Materials. — 2007. — Т. 14, № 3. — С. 332-337. — Бібліогр.: 17 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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spelling nasplib_isofts_kiev_ua-123456789-1365402025-02-09T21:33:52Z Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy Обертання монокристалів хіральних домішок на нематичній краплині: гідродинамічна агалогія Gvozdovskyy, I.A. Lisetski, L.N. In the Lehmann-type effect of rotation of small single crystals of chiral substances during their dissolution at the top of a nematic droplet the angular velocity of rotation of the chiral dopant crystals is experimentally shown to be dependent on the crystal dimensions, helical twisting power of the dopant (determined in independent measurements) and viscosity of the nematic solvent, whereas no rotation was observed for non-chiral dopants or in isotropic solvents under the same conditions. For systematic series of dopants (e.g., cholesterol esters), linear dependencies between the angular velocity and helical twisting power were found. It is argued that the obtained results (a) suggest a novel method for evaluation of helical twisting power, especially useful for dopants of weak chirality, and (b) are a direct evidence of transformation of the energy of chiral interactions into the energy of molecular movement. 2007 Article Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy / I.A. Gvozdovskyy, L.N. Lisetski // Functional Materials. — 2007. — Т. 14, № 3. — С. 332-337. — Бібліогр.: 17 назв. — англ. 1027-5495 https://nasplib.isofts.kiev.ua/handle/123456789/136540 en Functional Materials application/pdf НТК «Інститут монокристалів» НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description In the Lehmann-type effect of rotation of small single crystals of chiral substances during their dissolution at the top of a nematic droplet the angular velocity of rotation of the chiral dopant crystals is experimentally shown to be dependent on the crystal dimensions, helical twisting power of the dopant (determined in independent measurements) and viscosity of the nematic solvent, whereas no rotation was observed for non-chiral dopants or in isotropic solvents under the same conditions. For systematic series of dopants (e.g., cholesterol esters), linear dependencies between the angular velocity and helical twisting power were found. It is argued that the obtained results (a) suggest a novel method for evaluation of helical twisting power, especially useful for dopants of weak chirality, and (b) are a direct evidence of transformation of the energy of chiral interactions into the energy of molecular movement.
format Article
author Gvozdovskyy, I.A.
Lisetski, L.N.
spellingShingle Gvozdovskyy, I.A.
Lisetski, L.N.
Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
Functional Materials
author_facet Gvozdovskyy, I.A.
Lisetski, L.N.
author_sort Gvozdovskyy, I.A.
title Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
title_short Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
title_full Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
title_fullStr Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
title_full_unstemmed Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
title_sort rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy
publisher НТК «Інститут монокристалів» НАН України
publishDate 2007
url https://nasplib.isofts.kiev.ua/handle/123456789/136540
citation_txt Rotation of single crystals of chiral dopants at the top of namatic droplet: a hydrodynamical analogy / I.A. Gvozdovskyy, L.N. Lisetski // Functional Materials. — 2007. — Т. 14, № 3. — С. 332-337. — Бібліогр.: 17 назв. — англ.
series Functional Materials
work_keys_str_mv AT gvozdovskyyia rotationofsinglecrystalsofchiraldopantsatthetopofnamaticdropletahydrodynamicalanalogy
AT lisetskiln rotationofsinglecrystalsofchiraldopantsatthetopofnamaticdropletahydrodynamicalanalogy
AT gvozdovskyyia obertannâmonokristalívhíralʹnihdomíšoknanematičníikraplinígídrodinamíčnaagalogíâ
AT lisetskiln obertannâmonokristalívhíralʹnihdomíšoknanematičníikraplinígídrodinamíčnaagalogíâ
first_indexed 2025-12-01T01:16:56Z
last_indexed 2025-12-01T01:16:56Z
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