Soliton-like defects in nematic liquid crystal thin layers
| Autor: | A. N. Chuvyrov, Yu. I. Timirov, Alexei Krekhov, Yu. A. Lebedev |
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| Rok vydání: | 2016 |
| Předmět: |
Thin layers
Materials science Annihilation Condensed matter physics Solid-state physics Drop (liquid) General Physics and Astronomy Anchoring 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Surface energy 0104 chemical sciences Condensed Matter::Soft Condensed Matter Classical mechanics Liquid crystal Electric field Physics::Accelerator Physics 0210 nano-technology |
| Zdroj: | Journal of Experimental and Theoretical Physics. 123:899-907 |
| ISSN: | 1090-6509 1063-7761 |
| DOI: | 10.1134/s1063776116110054 |
| Popis: | The nonsingular soliton-like defects in plane nematic liquid crystal (NLC) layers and spherical NLC drops are experimentally detected and studied when the interaction of NLC molecules with a bounding surface is varied. The dynamics and the annihilation of nonsingular defects of opposite signs on a plane surface are investigated. Periodic transformations of the soliton-like defects in NLC drops in an electric field are detected. The theory of elasticity is used to show that the surface energy taken into account in the total free energy of NLC in the case of weak anchoring leads to the possibility of nonsingular solutions of a director equilibrium equation. The calculated pictures of director distribution in a plane NLC layer and in a spherical NLC drop characterized by weak surface anchoring agree well with the results of polarized light optical observations. |
| Databáze: | OpenAIRE |
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