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Breather-like director reorientations in a nematic liquid crystal with nonlocal nonlinearity |
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| Authors: | Kavitha L. Venkatesh M. Saravanan M. Dhamayanthi S. Gopi D. |
| Affiliation: | 1. Department of Physics, Periyar University, Salem- 636 011, Tamilnadu, India;2. The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy;3. Department of Chemistry, Periyar University, Salem- 636 011, Tamilnadu, India;4. Center for Nanoscience and Nanotechnology, Periyar University, Salem- 636 011, Tamilnadu, India |
| Abstract: | The nature of nonlinear molecular deformations in a homeotropically aligned nematic liquid crystal (NLC) is presented. We start from the basic dynamical equation for the director axis of a NLC with elastic deformations and adopt space curve mapping procedure to analyze the dynamics. The NLC is governed by an integro-differential perturbed nonlocal nonlinear Schrödinger equation and we solve the same using Jacobi elliptic function method aided with symbolic computation and construct an exact solitary wave solution. In order to better understand the effect of nonlocality on the director reorientations of nematic liquid crystal, we have constructed the component forms of director axis using Darboux vector transformation. This intriguing property as a result of the relation between the coherence of the breather-like solitary deformation and the nonlocality reveals a strong need for a deeper understanding in the theory of self-localization in NLC systems. |
| Keywords: | Nematic liquid crystal Orientational order liquid crystal Soliton Nonlinear Schrö dinger equation Director dynamics of NLC |
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