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    Orientational structures in cholesteric droplets with homeotropic surface anchoring / M. N. Krakhalev [et al.] // Soft Matter. - 2019. - Vol. 15, Is. 28. - P. 5554-5561, DOI 10.1039/c9sm00384c. - Cited References: 67. - This work was supported by the Russian Foundation for Basic Research Project No. 19-53-52011 MNT_a. The research is carried out using the equipment of the shared research facilities of HPC computing resources at Lomonosov Moscow State University supported by the project RFMEFI62117X0011. . - ISSN 1744-683X. - ISSN 1744-6848
Рубрики:
LIQUID-CRYSTAL DROPLETS
   TOPOLOGICAL DEFECTS
   NEMATIC DROPLETS
Аннотация: The dependency of orientational structures in cholesteric droplets with homeotropic surface anchoring on the helicity parameter has been studied by experiment and simulations. We have observed a sequence of structures, in which the director configurations and topological defects were identified by comparison of polarized microscopy pictures with simulated textures. A toron-like and low-symmetry intermediate layer-like structures have been revealed and studied in detail. The ranges of stability of the observed structures have been summarized in a general diagram and explained by the helicity parameter dependence of the free energy terms.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Kirensky Inst Phys,Fed Res Ctr, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Lomonosov Moscow State Univ, Fac Phys, Moscow 119991, Russia.
Natl Cheng Kung Univ, Tainan 70101, Taiwan.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Rudyak, Vladimir Yu.; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Gardymova, Anna P.; Emelyanenko, Alexander V.; Liu, Jui-Hsiang; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Foundation for Basic Research Project [19-53-52011 MNT_a, RFMEFI62117X0011]
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Gardymova, Anna P..
Optical textures and orientational structures in cholesteric droplets with conical boundary conditions / A. P. Gardymova, M. N. Krakhalev, V. Y. Zyryanov // Molecules. - 2020. - Vol. 25, Is. 7. - Ст. 1740, DOI 10.3390/molecules25071740. - Cited References: 53. - The authors are grateful for the financial support by the Russian Science Foundation (grant No. 18-72-10036). . - ISSN 1420-3049

РУБ Biochemistry & Molecular Biology + Chemistry, Multidisciplinary
Рубрики:
DISPERSED LIQUID-CRYSTALS
CHIRAL NEMATIC DROPLETS
IONIC MODIFICATION
Кл.слова (ненормированные):
cholesteric liquid crystal -- droplet -- optical texture -- orientational structure -- conical surface anchoring -- topological defect
Аннотация: Cholesteric droplets dispersed in polymer with conical boundary conditions have been studied. The director configurations are identified by the polarising microscopy technique. The axisymmetric twisted axial-bipolar configuration with the surface circular defect at the droplet’s equator is formed at the relative chirality parameter N0≤2.9 . The intermediate director configuration with the deformed circular defect is realised at 2.9
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Держатели документа:
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Russian Science FoundationRussian Science Foundation (RSF) [18-72-10036]
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