In recent years, demand for smart windows with dimming and other functions has been increasing, e.g., polymer dispersed liquid crystals. Liquid crystal (LC) gels also have the potential glass applications owing to their light-scattering properties. this study, LC were prepared by mixing nematic (E7) poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO) as a gelator. The gel formed dense PFO network conc...

An optical security device providing the function of a fingerprint for authentication along with a designed pattern storage function has been proposed. The proposed device uses the random fingerprint texture in the chiral nematic phase of an ultraviolet-curable liquid crystal. Using photopolymerization along with a mask of the designed pattern, a unique pattern can be fixed in the shape of the ...

We establish necessary conditions in order to design a phase-only wave front modulation system from a liquid crystal display. These conditions determine the dependence of the polarization state of the light emerging from the display on the addressing gray level. The analysis, which is carried out by means of the coherence-matrix formalism, includes the depolarization properties of the device. T...

An adaptive microlens structure is proposed using two polymer-stabilized blue-phase liquid-crystal layers whose Kerr constant is largely mismatched. This device exhibits several favorable features, such as polarization independence, simple structure, and good parabolic phase profile. Its applications for 2D/3D switchable displays and other photonic devices are emphasized.