Electroclinic effect in a chiral smectic C siloxane material

摘要

The authors have proposed that the electroclinic effect can explain the mechanism of layer rotation in the chiral smectic C phase. In this work, they investigate the soft mode in the chiral smectic C phase with three different experiments: dielectric permittivity measurements, light transmission measurements, and direct tilt angle measurements. They could clearly identify the electroclinic effect in the chiral smectic C phase in the experiments, which was very small compared to that of the SmA~* phase.