Physical Review E
banana-shaped compounds, achiral molecules, field, transition
The dielectric fluctuations in the uniaxial nematic phase of a bent-core liquid crystal have been studied by dynamic light scattering. Polarization selection of the scattering cross-section reveals one mode due to ordinary director fluctuations and, in the lower part of the nematic phase, a second mode attributable to fluctuations of the biaxial order parameter. The director fluctuations are similar to100 times slower than observed in typical nematics based on straight-core molecules, suggesting that the bent core nematogenic units may be microscopic smectic domains ("cybotactic" clusters).
Stojadinovic, S.; Adorjan, A.; Sprunt, Samuel N.; Sawade, Hans; and Jakli, Antal (2002). Dynamics of the Nematic Phase of a Bent-Core Liquid Crystal. Physical Review E 66(6). doi: 10.1103/PhysRevE.66.060701 Retrieved from http://digitalcommons.kent.edu/cpippubs/167