1. Open Access Kent State
  2. High Resolution X-Ray Diffraction Study of Smectic Polymorphism and Fluctuations in a Mixture of Octyl- and Decyl-Oxyphenyl Nitrobenzoyloxy Benzoate
Author(s)
Abstract

Reentrant nematic phases and smectic antiphases occur as intermediate states between two one-dimensionally ordered frustrated smectic phases, characterized by two competing and, in general, incommensurate smectic density waves. Using high-resolution x-ray diffraction, we have examined the evolution of the two density waves as a function of temperature in all phases of a mixture of polar liquid crystals octyl- and decyl-oxyphenyl nitrobenzoyloxy benzoate (47.4 mol% DB8ONO2+52.6% DB10ONO2). This mixture exhibits at temperatures below 127 °C the liquid-crystal phase sequence: smectic-Ad, reentrant nematic phases Nd and N1, smectic-A1, tilted antiphase C̃, smectic-A2, and smectic-C2 phases. Detailed investigations of several order-disorder transitions and the evolution of fluctuation effects in this system are reported
Format
Article
Identifier(s)
10.1103/PhysRevE.56.5575
Publication Date
1997-11-01
Publication Title
Physical Review Letters
Volume
56
Issue
5
First Page
5575
Last Page
5584
Subject
Community
Department of Physics
Permalink https://oaks.kent.edu/article/high-resolution-x-ray-diffraction-study-smectic-polymorphism-and-fluctuations-mixture-octyl
Shi, Y., Nounesis, G., Garland, C., & Kumar, S. (1997). High Resolution X-Ray Diffraction Study of Smectic Polymorphism and Fluctuations in a Mixture of Octyl- and Decyl-Oxyphenyl Nitrobenzoyloxy Benzoate. Physical Review Letters. https://doi.org/10.1103/PhysRevE.56.5575
Shi, Yushan, George Nounesis, Carl Garland, and Satyendra Kumar. 1997. “High Resolution X-Ray Diffraction Study of Smectic Polymorphism and Fluctuations in a Mixture of Octyl- and Decyl-Oxyphenyl Nitrobenzoyloxy Benzoate”. Physical Review Letters. https://doi.org/10.1103/PhysRevE.56.5575.
Shi, Y., G. Nounesis, C. Garland, and S. Kumar. High Resolution X-Ray Diffraction Study of Smectic Polymorphism and Fluctuations in a Mixture of Octyl- and Decyl-Oxyphenyl Nitrobenzoyloxy Benzoate. Physical Review Letters, 1 Nov. 1997, doi:10.1103/PhysRevE.56.5575.