Extension of Maier-Meier Model on Cholesteric Liquid Crystals

• Authors: J. Hoffmann
• Languages of publication: EN

Abstracts

EN

Based on the Maier-Meier theory, a model is proposed in which the electric permittivity values of the cholesteric liquid crystals can be linked to their molecular parameters (μ - dipole moment,α - polarizability). To accomplish this project there were defined the transformation principles from the liquid crystal structure frame to the molecular frame, and a method for rendering the single molecule parameters (μ, α) into a set of averaged quantities of the macroscopic ensemble was offered. This model was used to calculate a dipole moment and polarizability for two liquid crystalline materials from electric permittivity measurements. The results are compared with the data obtained from MP3 calculations.

Keywords

EN

61.30.Eb

Discipline

• 61.30.Eb: Experimental determinations of smectic, nematic, cholesteric, and other structures

• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 4
• Pages: 373-381

Dates

published

2004-04

received

2004-03-16

Contributors

author

J. Hoffmann

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

References

• 1. P.G. de Gennes, Physics of Liquid Crystals, Clarendon Press, Oxford 1974
• 2. W. Maier, G. Meier, Z. Naturforsch. A 16, 262 (1961)
• 3. L. Onsager, J. Am. Chem. Soc. 58, 1486 (1936)
• 4. M.F. Vuks, Opt. Spektrosk. 20, 361 (1966)
• 5. J. Jadżyn, S. Czerkas, G. Czechowski, A. Burczyk, R. Dąbrowski, Liq. Cryst. 26, 437 (1999)
• 6. J. Hoffmann, Acta Phys. Pol. A 103, 41 (2003)
• 7. W. Kuczyński, B. Żywucki, J. Małecki, Mol. Cryst. Liq. Cryst. 381, 1 (2002)
• 8. J. Małecki, unpublished results

Identifiers

DOI

10.12693/APhysPolA.105.373