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| Content Provider | Springer Nature Link |
|---|---|
| Author | Pandolfi, Anna Napoli, Gaeta |
| Copyright Year | 2011 |
| Abstract | When subjected to magnetic or electric fields, nematic liquid crystals confined between two parallel glass plates and initially uniformly oriented may undergo homogeneous one-dimensional spatial distortions (Fréedericksz and Zolina, Trans. Faraday Soc. 29:919, 1933) or periodic distortions (Lonberg and Meyer, Phys. Rev. Lett. 55(7):718–721, 1985; and Srajer et al., Phys. Rev. Lett. 67(9):1102–1105, 1991). According to the experimental observations, periodic phases are stable configurations at intermediate intensity of the acting field, while homogeneous phases are stable at higher strengths.We present a fully nonlinear finite element approach able to describe homogeneous and periodic configurational phases in a cell of confined nematic liquid crystal with strong planar anchoring boundary conditions. Stationary configurations are obtained by setting to zero the first variation of the discretized total energy of the system. Unstable configurations are identified by evaluating the behavior of the solution under small numerical perturbations. Numerical calculations are able to describe the evolution of the configurational distortions as a function of the applied field and are able to capture the critical points between homogeneous and periodic phases. The proposed approach has been proved to be an excellent tool to predict the existence of unstable or metastable distortions, characterized by higher energy levels. |
| Ending Page | 809 |
| Page Count | 25 |
| Starting Page | 785 |
| File Format | |
| ISSN | 09388974 |
| e-ISSN | 14321467 |
| Journal | Journal of Nonlinear Science |
| Issue Number | 5 |
| Volume Number | 21 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-06-09 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Finite elements ApplicationMathematics/Computational Methods of Engineering Metastable configuration Theoretical, Mathematical and Computational Physics Liquid crystals Stable configuration Nematic liquid crystal Continuum models (systems of particles, etc.) Analysis Mechanics Economic Theory Finite elements, Rayleigh-Ritz and Galerkin methods, finite methods Phase transition |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Engineering Modeling and Simulation |
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