Physical Review Letters
Critical Behavior, Smectic A1, Polymorphism
The experimental observation of a phase transition between two uniaxial nematic liquid-crystalline phases is reported. High-resolution x-ray scattering and ac calorimetric studies on binary mixtures of octyl- and decyloxyphenyl-nitrobenzoyloxy benzoates show evidence of a first-order transition between two nematic phases with different types of short-range smectic order. This transition is observed in the vicinity of the termination of the smectic-Ad-smectic-A1 phase boundary, in accordance with theoretical predictions.
Nounesis, G.; Kumar, Satyendra; Pfeiffer, S.; Shashidhar, R.; and Garland, C. W. (1994). Experimental-Observation of a Transition Between 2 Uniaxial Nematic Liquid-Crystal Phases. Physical Review Letters 73(4), 565-568. doi: 10.1103/PhysRevLett.73.565 Retrieved from http://digitalcommons.kent.edu/phypubs/75