| Title: | Finite-size effects on order reconstruction around nematic defects |
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| Authors: | ID Kralj, Samo (Author)
ID Rosso, Riccardo (Author)
ID Virga, Epifanio Giovanni (Author) |
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| Files: |  http://dx.doi.org/10.1103/PhysRevE.81.021702
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| Language: | English |
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| Work type: | Unknown |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FNM - Faculty of Natural Sciences and Mathematics
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| Abstract: | By use of the Landau-de Gennes phenomenological theory, we study the texture of a nematic liquid crystal confined within a hybrid cell. Precisely, we consider cylindrically symmetric solutions containing topological defects dictated by appropriate boundary conditions. We focus our attention on cells whose dimensions are comparable with the biaxial correlation length ▫$xi_b$▫. For such severe confinements the order reconstruction (OR) configuration could be stable. Its structural details reflect the balance among boundary-enforced frustration, elastic penalties, and finite-size effects. In particular, we analyze the interplay between finite-size effects and topological defects. We show that defects are always pinned to the negatively (planar) uniaxial sheet of the OR structure. The presence of a ring defect can dramatically increase the critical threshold below which the OR structure is stable. |
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| Keywords: | physics, liquid crystals, nematic crystals, nematic defects, structural transitions |
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| Year of publishing: | 2010 |
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| PID: | 20.500.12556/DKUM-35451  |
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| UDC: | 532.783 |
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| ISSN on article: | 1539-3755 |
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| COBISS.SI-ID: | 17429000 |
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| NUK URN: | URN:SI:UM:DK:QINXF5SZ |
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| Publication date in DKUM: | 07.06.2012 |
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| Views: | 2658 |
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| Downloads: | 99 |
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| Metadata: |    |
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| Categories: | Misc.
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