Fast Electro-Optic Switching of Twisted Nematic LCD Doped with Cyclodextrin Capped Silica Nanoparticles



We prepared cyclodextrin (CyD)-capped silica (CyD-SiO2) nanoparticles and poly(cyclodextrin) (PCyD)-capped silica (PCyD-SiO2) nanoparticles. The average diameter of SiO2 nanoparticles capped by αCyD, βCyD, γCyD and PγCyD are 9.4, 8.4, 10.6, and 6.4 nm, respectively. The nanoparticles were dispersed in liquid crystal; 4′-pentyl-4-cyanobiphenyl to construct novel twisted nematic liquid crystal device (TN-LCD). The response time of this TN-LCD in the presence of PγCyD-SiO2 nanoparticles was faster than that in the absence.