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This article is cited in 12 scientific papers (total in 12 papers)
CONDENSED MATTER
Orientational structures in nematic droplets with conical boundary conditions
V. Yu. Rudyaka, M. N. Krakhalevbc, O. O. Prishchepacb, V. S. Sutorminc, A. V. Emelyanenkoa, V. Ya. Zyryanovc a Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
b Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk
c Kirensky Institute of Physics, Federal Research Center - Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russia
Abstract:
Oblate nematic droplets encapsulated in a polymer specifying conical boundary conditions have been considered. Calculations by the extended Frank elastic continuum approach show that a number of various structures can be formed in such droplets under the variation of their size. Polarizing optical microscopy studies of composite film samples confirm the results of calculation and demonstrate the formation of the following orientational structures in the considered system: (i) a radial-bipolar structure with a twisted hedgehog defect and two hyperbolic boojums, (ii) an axial-bipolar structure with a circular disclination and two radial boojums, and (iii) a structure with a hedgehog defect, a hyperbolic boojum, and a radial boojum. Such a diversity of possible topologies of droplets is due to a complex balance between the energies of elasticity of the director field, disclinations, and anchoring with the surface, which is ensured by conical boundary conditions.
Received: 24.07.2017 Revised: 24.08.2017
Citation:
V. Yu. Rudyak, M. N. Krakhalev, O. O. Prishchepa, V. S. Sutormin, A. V. Emelyanenko, V. Ya. Zyryanov, “Orientational structures in nematic droplets with conical boundary conditions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 106:6 (2017), 358–364; JETP Letters, 106:6 (2017), 384–389
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https://www.mathnet.ru/eng/jetpl5373 https://www.mathnet.ru/eng/jetpl/v106/i6/p358
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Abstract page: | 163 | Full-text PDF : | 26 | References: | 40 | First page: | 11 |
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