Effects of CuInS_(2)nanoparticles on the alignment control of liquid crystals  

作　　者：Dongyu Zhao Yuanyuan Guo Weihua Bi Xin Li Ran Duan Lin Guo 

机构地区：[1]Beijing Advanced Innovation Center for Biomedical Engineering,School of Chemistry,Beihang University,Beijing 100191,China

出　　处：《Nano Research》2022年第8期7542-7548,共7页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(Nos.51973007 and 51673008);the Beijing Natural Science Foundation of China(No.2192030);the National Key R&D Program of China(No.2018YFB0703703).

摘　　要：Liquid crystal-nanoparticle composite systems have attracted particular attention for both academic interests and applications in inducing macroscopic alignment,altering electro-optic response of the liquid crystal hosts,and generating ordered,tunable soft metamaterials.Herein,the synthesis of two shapes of CuInS_(2)nanoparticles,tremelliform-like CuInS_(2)and frame-like CuInS_(2),and their utilization in producing uniform homeotropic alignment of liquid crystals are reported.Through exploring the mechanism in detail,the crystal structures of CuInS_(2)nanoparticles were found to rely heavily on the reaction solvents during the growth process,which in turn play a significant role on the anchor of liquid crystal molecules.The achieved homeotropic alignment shows high thermal stability,owing to the outstanding stability of the CuInS_(2)nanoparticles.In addition,combining this feasible method with parallel-aligning technique,variable pretilt angles in a range of~0.9°to~7.2°could be continuously achieved.

关 键 词：CuInS_(2)nanoparticles MORPHOLOGY liquid crystals ALIGNMENT pretilt angle 

分 类 号：TB383[一般工业技术—材料科学与工程]