We prepared cyclodextrin (CyD)-capped silica (CyD-SiO 2 ) nanoparticles and poly(cyclodextrin) (PCyD)-capped silica (PCyD-SiO 2 ) nanoparticles. The average diameter of SiO 2 nanoparticles capped by aCyD, bCyD, gCyD and PgCyD are 9.4, 8.4, 10.6, and 6.4 nm, respectively. The nanoparticles were dispersed in liquid crystal; 4 0 -pentyl-4-cyanobiphenyl to construct novel twisted nematic liquid crystal device (TN-LCD). The response time of this TN-LCD in the presence of PgCyD-SiO 2 nanoparticles was faster than that in the absence.

We prepared 4 -pentylbiphenyl-4-carbonitrile (5CB)-stabilized rhodium (5CB-Rh) nanoparticles and poly(cyclodextrin) (PCyD)-stabilized rhodium (PCyD-Rh) nanoparticles. The average diameter of Rh nanoparticles stabilized by 5CB, P CyD, P CyD, and P CyD are 1.2, 5.4, 6.8, and 5.2 nm, respectively. The nanoparticles were dispersed in liquid crystal 5CB to construct novel twisted nematic liquid crystal device (TN-LCD). Voltage holding ratio was measured for TN-LCD fabricated by doping P CyD-Rh nanoparticles. The decrement of the voltage was very much reduced for that doped with P CyD-Rh. The response time of this TN-LCD in the presence of P CyD-Rh nanoparticles was faster than that in the absence.