Physical Review E
Smectic A Phase, Liquid Crystals, Model, Order
The nematic (N) to lamellar (Lα) phase transition in binary mixtures of cesium-perfluoro-octanoate (CsPFO) and water has been studied by high-resolution synchrotron x-ray scattering at 46.6 weight % CsPFO. The longitudinal correlation length ξ∥ and the susceptibility σ associated with the lamellar phase fluctuations in the N phase, measured over three decades of reduced temperature, diverge with critical exponents ν∥=0.86±0.04 and γ=1.37±0.11, respectively. These results show that the N to Lα phase transition is quantitatively similar to the N to smectic-A phase transition of thermotropic liquid crystals with a wider nematic range.
Shin, S. T.; Brock, J. D.; Sutton, Mark; Lister, J. D.; and Kumar, Satyendra (1998). Critical Behavior at the Nematic To Lamellar Phase Transitions: A Synchrotron X-Ray Scattering Study. Physical Review E 57(4), R3711-R3714. doi: 10.1103/PhysRevE.57.R3711 Retrieved from http://digitalcommons.kent.edu/phypubs/14