Molecular Polarizability Studies on Some Cyano-Biphenyl Series Liquid Crystals by Theoretical and Experimental Approach

Authors

  • Rihana Banu Department of Physics, Govt. First Grade College, Davangere 577004, Karnataka
  • C. M. Subhan Department of Physics, Shri Shirdi Sai Institute of Science & Engineering, Vadiyampeta, Anantapur
  • K. Fakruddin Department of Physics, Ghousia College of Engineering, Ramanagram 562159, Karnataka

DOI:

https://doi.org/10.26713/jamcnp.v6i1.1234

Keywords:

Liquid crystals, Phase transition temperatures, Density, Refractive index and molecular polarizability

Abstract

The transition temperatures of Cyano-biphenyl liquid crystalline compounds, (12.CB, 7O.CB and 5O.CB) are recorded by using Differential scanning calorimeter. The transition temperatures are used to estimate molecular polarizability by theoretical approaches, i.e., by Lippincott-delta function technique and molecular vibration technique. The density and refractive indices are measured by using specially designed Pyknometer and indigenously developed spectrometer coupled with small angled prism. The molecular polarizabilities are assessed by Vuks and Neugebauer methods using experimentally obtained refractive indices and density data. The results obtained by the current techniques and their limitations are discussed.

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References

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Published

2019-05-25
CITATION

How to Cite

Banu, R., Subhan, C. M., & Fakruddin, K. (2019). Molecular Polarizability Studies on Some Cyano-Biphenyl Series Liquid Crystals by Theoretical and Experimental Approach. Journal of Atomic, Molecular, Condensed Matter and Nano Physics, 6(1), 21–32. https://doi.org/10.26713/jamcnp.v6i1.1234

Issue

Vol. 6 No. 1 (2019)

Section

Research Article

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