Related Experiment Video
Updated: Jun 13, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Polarization converters based on axially symmetric twisted nematic liquid crystal
Shih-Wei Ko1, Chi-Lun Ting, Andy Y-G Fuh
1Institute of Electro-optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701, China.
Abstract:
An axially symmetric twisted nematic liquid crystal (ASTNLC) device, based on axially symmetric photoalignment, was demonstrated. Such an ASTNLC device can convert axial (azimuthal) to azimuthal (axial) polarization. The optical properties of the ASTNLC device are analyzed and found to agree with simulation results. The ASTNLC device with a specific device can be adopted as an arbitrary axial symmetric polarization converter or waveplate for axially, azimuthally or vertically polarized light. A design for converting linear polarized light to axially symmetric circular polarized light is also demonstrated.
Related Concept Videos
Dielectric Polarization in a Capacitor
Group Polarization
Biasing of P-N Junction
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)

