Journal Press India^®

Author Details ( * ) denotes Corresponding author

The frequency and temperature dependence of the complex dielectric spectroscopy was measured near the semectic C* phase liquid crystal with a large spontaneous polarization. The dielectric strengths as well as the corresponding relaxation frequency were determined. Due to large polarization, we were able to resolve the contribution of different modes. The Significant contribution of conductance effect at lower frequency side in experimental data have to showed.

Keywords

Surfactants; Anaionic Surfactants; Cationic Surfactants; Biodegradability; Biodegradability Tests.

1. RB Meyer, L Liebert, L Strzelecki, P Keller, J de. Phys. (Paris) 36, L69, 1975.


2. LA Beresnev, LM Blinov, MA Osipov, SA Pikin, Mol. Cryst. Liq. Cryst., 158A, 1-150, 1988.


3. Peter J. Collings and Michael Hird, Inntroduction To Liquid Crystals, Taylor & Francis, London, 1997.


4. PG de Gennes, The Physics of Liquid Crystals, Clarendon Press, Oxford, 1974.


5. D.S. Parmar and Ph. Martinot – Lagerwal, Appl. Phys. Lett., 36, 899, 1980.


6. KK Raina, Mol. Cryst. LIq. Cryst., 151, 211, 1987.


7. NA Clark, ST Lagerwal, Appl. Phys. Lett., 36, 899, 1980.


8. J. Funfschilling and M. Schadt, Jpn. J. Appl. Phys., 30(4), 741, 1991.


9. A. Levstik, T. Carlsson, C. Fillipic, T. Levstik and B. Zeks, Phys. Rev. A, 35, 3527, 1987.


10. T. Carlsson and B. Zeks, Phys. Rev., 36, 1484, 1984.


11. S. Wrobel, W. Hasse, M. Pfeiffer and T. Geelhar, Mol. Cryst. Liq. Cryst., 212, 355, 1992.


12. S. Wrobel, C. Cohen, D. Davidov, and M. Pfeifer, Ferroelectrics, 166, 211, 1955.


13. A. M. Biradar, S. Wrobel, and W. Haase, Phys. Rev. A, 39, 2693, 1989.


14. S. Hiller, A.M. Biradar, S. Wrobel and W. Haase, Phys. Rev., E. 53, 1,1996.