𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The influence of nonextensivity on orientational ordering in liquid crystal systems with variable molecular shape

✍ Scribed by Ozhan Kayacan

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
247 KB
Volume
354
Category
Article
ISSN
0378-4371

No coin nor oath required. For personal study only.

✦ Synopsis

A generalized model taking into account the photoisomerization influence on the nematic ordering is presented. This generalized theory is used to investigate the effect of the nonextensivity on the concentration dependence of the long-range order parameter. The qdependent variation of the concentration of cis-trans isomers and of the order parameter with the time of exposure to the illumination is investigated within nonextensivity. It is also shown that for sufficiently long exposition of the mesophase to the illumination the nematic phase cannot disappear for some value of the entropic index, coming from Tsallis statistics. Moreover it is shown that long range interactions or the fractal structure in the liquid crystalline system might affect the characteristics of the phase transition in the physical system. We think therefore that this conclusion might shed light on the interaction potential energy terms in the similar system in future possible experiments, even to be performed on new objects with different symmetries.

📜 SIMILAR VOLUMES

The rα-structure of partially oriented 1
The rα-structure of partially oriented 1,2,3,5-tetrachlorobenzene determined from its 1H NMR spectra with natural-abundance 13C-satellites. A Demonstration of the Combined Use of Spectra Obtained from Molecules Dissolved in Several Different Liquid Crystals as Solvents for Spin Systems not having enough Dipolar Coupling Constants to Determine the Molecular Structure
✍ G. Dombi; J. Amrein; P. Diehl 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 322 KB

## Abstract It is demonstrated that in a case where neither the proton nor the natural‐abundance ^13^C‐satellite spectra of a partially oriented molecule carry enough structural information, one can determine the entire molecular geometry by the combined use of several liquid crystals as solvents.