Electro-Optical Properties of LCD Doped with Nanoparticles and with Optical Compensators: Ways for Fast Response

Shear-Thinning Characteristics of Nematic Liquid Crystals Doped with Nanoparticles

“…The surfaces of the as-received R-812 and RX-50 were covered with thin hydrophobic overcoats of hexamethyldisilazane to prevent aggregation. Previously, decreases in threshold voltage have been confirmed when using NTN-02 with R-812 [3], and we propose that this occurs because the bulk order parameter is decreased by the addition of the nanoparticles. This means that the threshold voltage and rotational viscosity are also reduced.…”

“…Hakobyan et al have reported that the change in the bulk order parameter can be estimated in the case that the host NLC is achiral [11]. Kobayashi's paper also stresses that the use of chiral dopants in NLCs plays an important role in the dispersion of the nanoparticles [3]. In our work, the NTN-02 and NTN-03 both contained small amounts of a chiral dopant, with a nominal chiral pitch of 12 µm at 25 • C. In the case of cholesteric liquid crystals (or chiral-doped NLCs) it is virtually impossible to evaluate the bulk order parameter and elastic constant directly so long as the NLC mixture contains a chiral dopant.…”

“…A simple means of improving the response speed of an LCD is to reduce the viscosity of the LC compound on which it is based [2], so several LC homologues have been made for this purpose. Recently, Kobayashi's group proposed another method of increasing the response speed based on the addition of nanoparticles [3]. Doping with nanoparticles in this manner is thought to improve response speeds by reducing the order parameter of nematic LCs (NLCs) [4].…”

54‐1: Laser Speckle Reduction using Nanoparticle‐Embedded Liquid Crystals

“…In this work, a nanoparticle-embedded liquid crystal with the ability of laser speckle reduction with zero-power consumption is demonstrated. This approach is reported to have fast response and wide viewing angle when it is used as a light shutter [14,15]. The nanoparticle-embedded liquid crystal devices has the tuning flexibility of choice of particle size and effective refractive index of the surrounding medium.…”

P‐222:Late‐News‐Poster:Mechanically‐Static Laser Speckle Reduction Solution

“…In the isotropic phase, the order parameter of LC is 0. At room temperature, a NP-doped LC sample has a lower order parameter than a pure LC sample [28]. As the temperature increases, the change in order parameter is more significant in the pure LC sample than in the NP-doped LC sample.…”