A possible large quadrupole moment driving torque in a smectic liquid crystal

Akihiro Mochizuki

doi:10.1117/12.2676028

29 September 2023 A possible large quadrupole moment driving torque in a smectic liquid crystal

Akihiro Mochizuki

Proceedings Volume 12658, Liquid Crystals XXVII; 1265807 (2023) https://doi.org/10.1117/12.2676028
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Abstract

A possible large quadrupole moment driving torque is discussed in terms of phenomenological observation of specific smectic liquid crystal cases. Some smectic liquid crystal molecules showing their molecular directors tilting from the smectic layer normal are forced to stay the directors perpendicular to the smectic layer normal by strong azimuthal anchoring at the surface of the liquid crystal panel. This specific configuration is called as SSD or Smectic Single Domain drive mode. An SSD liquid crystal drive mode has been found of its molecular director switching keeps perpendicular to the applied electric field during its whole the switching process. Although it is still not a direct proof, this empirical observation is one of the possible pieces of evidence of quadrupole moment driving torque. So far, all the empirical observations indicate quadrupole moment driving torque in an SSD liquid crystal panel.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Akihiro Mochizuki "A possible large quadrupole moment driving torque in a smectic liquid crystal", Proc. SPIE 12658, Liquid Crystals XXVII, 1265807 (29 September 2023); https://doi.org/10.1117/12.2676028

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