Molecular dynamics in low-molar and polymeric ferroelectric liquid crystals

Broadband dielectric spectroscopy covering the frequency range from 10−1 Hz to 109 Hz was employed to study the molecular dynamics in low-molar and polymeric ferrroelectric liquid crystals. At frequencies below 106 Hz the ferroelectric modes, soft and Goldstone mode are observed. In the frequency regime from 106 Hz to 109 Hz a fast relaxation process is found, which is assigned to the hindered rotation of the mesogens around their long molecular axis. It turns out that the molecular dynamics is not principally different between low-molar and polymeric systems.

Molecular dynamics in ferroelectric liquid crystals: From low molar to polymeric and elastomeric systems

Ferroelectric liquid crystalline polysiloxanes with high spontaneous polarization and possible applications in nonlinear optics