Related Experiment Video
Updated: Aug 11, 2026

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Theory of nonlocal soliton interaction in nematic liquid crystals
Per Dalgaard Rasmussen1, Ole Bang, Wieslaw Królikowski
1COM.DTU Department of Communications, Optics & Materials, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
Abstract:
We investigate interactions between spatial nonlocal bright solitons in nematic liquid crystals using an analytical ("effective particle") approach as well as direct numerical simulations. The model predicts attraction of out-of-phase solitons and the existence of their stable bound state. This nontrivial property is solely due to the nonlocal nature of the nonlinear response of the liquid crystals. We further predict and verify numerically the critical outwards angle and degree of nonlocality which determine the transition between attraction and repulsion of out-of-phase solitons.
Related Concept Videos
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Theory of Strong Electrolytes
Theories of Dissolution: Diffusion Layer Model
This process starts with a thin layer, saturated with the drug, forming at the interface between the solid and liquid. The solute then diffuses from this layer into the main solution. The Noyes-Whitney equation suggests that the rate of dissolution relies on the diffusion...
The Colloidal State
Nonideal Two-Component Liquid Solutions
Intermolecular Forces

