Concurrence of bulk and surface order reconstruction to the relaxation of frustrated nematics

5th International Conference on Mathematical Modeling in Physical Sciences

物理学;数学

Amoddeo, Antonino^1

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

I-89122, Italy^1

关键词: Electric pulse;    Moving mesh finite element methods;    Nematic textures;    Nematics;    Order reconstruction;    Surface ordering;    Time duration;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/738/1/012089/pdf
DOI  :  10.1088/1742-6596/738/1/012089

来源: IOP

【 摘 要 】

Applying appropriate electric pulses to a nematic liquid crystal confined between plates, the bulk order reconstruction can occur, a mechanism allowing the switching between topologically different nematic textures without any director rotation. Using a moving mesh finite element method we describe the order tensor dynamics for a nematic inside an asymmetric n-cell, putting in evidence as textural distortions induced by strong asymmetries can be relaxed via both bulk and surface order reconstruction, occurring close to a confining plate with different time duration.