Stressed states and persistent defects in confined nematic elastica
| Autor: | Michael H. Köpf, Len M. Pismen |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Condensed matter physics
Antisymmetric relation Applied Mathematics General Physics and Astronomy Statistical and Nonlinear Physics Field analysis Lower energy Condensed Matter::Soft Condensed Matter Bifurcation theory Liquid crystal Phase (matter) Stressed state Mathematical Physics Bifurcation Mathematics |
| Zdroj: | Nonlinearity. 28:3957-3971 |
| ISSN: | 1361-6544 0951-7715 |
| DOI: | 10.1088/0951-7715/28/11/3957 |
| Popis: | We analyse the variety of solutions, both defect-free and containing defects in a confined nematic elastomer, arising as a result of competition between nematic ordering and elastic stresses. Phase field analysis predicts bifurcation of solutions with symmetric and antisymmetric distribution of nematic alignment from a perfectly aligned stressed state. The antisymmetric branch always has a lower energy, as confirmed by numerical computations away from the bifurcation point. At still higher deviations, states containing persistent defect pairs become preferable but defect-free states and states with defects coexist in a wide parametric range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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