Nematodynamics modelling under extreme mechanical and electric stresses

3rd International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Amoddeo, Antonino^1

Department of Civil, Environmental and Materials Engineering, Università Mediterranea di Reggio Calabria, Via Graziella 1, Feo di Vito, Reggio Calabria, Energy

I-89122, Italy^1

关键词: Electric stress;    Mechanical stress;    Moving mesh finite element methods;    Nematic molecules;    Nematic textures;    Order reconstruction;    Surface characteristics;    Switching properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/574/1/012102/pdf
DOI  :  10.1088/1742-6596/574/1/012102

来源: IOP

【 摘 要 】

Nematic liquid crystals confined in asymmetric π-cells and subjected to intense electrical and mechanical stresses undergo strong distortions which can be relaxed by means of the order reconstruction, a fast switching mechanism connecting topologically different textures, assuming bulk and/or surface characteristics depending on both amplitude of the applied electric fields and anchoring angles of the nematic molecules on the confining surfaces. In the frame of the Landau-de Gennes order tensor theory, we provide a numerical model implemented with a moving mesh finite element method appropriate to describe the nematic order dynamics, allowing to map the switching properties of the nematic texture.