Modulation of smectic liquid crystals superstructures under multiple external fields
Making full use of the self-assembly and stimulus-response properties of liquid crystals(LCs)to achieve flexible construction,dynamic manipulation and multi-functional applications of smectic LC hierachical superstructures has great significance for stimulating more cutting-edge innovative devices and pushing the practical application of LC superstructures.This research focuses on preparation and self-assembly of smectic LC superstructures,modulation of defect structures by multiple external stimuli,and dynamic regulation laws.First,the shape and size modulation of smectic LC topological superstructures by photopatterning and spin-coating parameters were explored.Then,the microlensing function of the focal conic domain arrays was verified.Through optimization of composite material and proposing the polymer-stabilized strategy,dynamic regulation of the square focal cone domain array under electric field at 35℃(i.e.,nematic phase)was demonstrated.Finally,this paper also studied multi-dimensional control of smectic LC topological superstructures by introducing chirality,light field and thermal field.This study combines multiple external field stimuli,such as photoalignment,film thickness,polymer network,electric field,chirality,and light field to achieve multi-dimensional control of the hierachical superstructure of smectic LCs.
万方数据
维普
