Comparative x-ray and dielectric measurements of smectic A–smectic-[formula presented] transition in bulk and confined geometries

Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

Volumn 66, Issue 3, 2002, Pages

  Sandhya, K L ^a   Prasad, S Krishna ^a   Rao, D S Shankar ^a   Bahr, Ch ^b  

^a CENTRE FOR NANO AND SOFT MATTER SCIENCES   (India)

^b PHILIPPS UNIVERSITY MARBURG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTALLINE MATERIALS; DIELECTRIC MATERIALS; ELECTROOPTICAL DEVICES; FERROELECTRIC MATERIALS; MOLECULAR DYNAMICS; MOLECULAR STRUCTURE; SOLVENTS; X RAY DIFFRACTION ANALYSIS;

DIPOLE-DIPOLE INTERACTIONS; LIQUID CRYSTAL MOLECULES; NANOPHASE SEGREGATION; THERMOTROPIC MESOPHASES;

SMECTIC LIQUID CRYSTALS;

ARTICLE;

EID: 41349084943     PISSN: 1063651X     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevE.66.031710     Document Type: Article

References (22)

1. For an excellent collection of review articles in this field, see Liquid Crystals in Complex Geometries, edited by G. P. Crawford and S. Zumer (Taylor & Francis, London, 1996).
2. M. Kuzma, and M.M. Labes, Mol. Cryst. Liq. Cryst. 100, 103 (1983).
3. G.P. Crawford, R. Stannarius, and J.W. Doane, Phys. Rev. A 44, 2558 (1991).
4. G.S. Iannacchione and D. Finotello, Phys. Rev. Lett. 69, 2094 (1992).
5. M.D. Dadmun and M. Muthukumar, J. Chem. Phys. 98, 4850 (1993).
6. G.P. Sinha and F.M. Aliev, Phys. Rev. E 58, 2001 (1998).
7. G.S Iannacchione, J.T. Mang, S. Kumar, and D. Finotello, Phys. Rev. Lett. 73, 2708 (1994).
8. T. Bellini, N.A. Clark, and D.W. Schaefer, Phys. Rev. Lett. 74, 2740 (1995).
9. F.M. Aliev, in Liquid Crystals in Complex Geometries, edited by G.P. Crawford and S. Zumer (Taylor & Francis, London, 1996), p. 345.
10. M. Skarabot, S. Kralj, R. Blinc, and I. Musevic, Liq. Cryst. 26, 723 (1999).
11. S.A. Rozanski, R. Strannarius, F. Krenes, and S. Diele, Liq. Cryst. 28, 1071 (2001).
12. J. Werner, K. Otto, D. Enke, G. Pelzl, F. Janowski, and H. Kresse, Liq. Cryst. 27, 1295 (2000).
13. K.L. Sandhya, Geetha G. Nair, S. Krishna Prasad, and Anjuli Khandelwal, Liq. Cryst. 28, 1847 (2001).
14. Ch. Bahr and G. Heppke, Mol. Cryst. Liq. Cryst. 148, 29 (1987).
15. Geetha G. Nair, S. Krishna Prasad, R. Shashidhar, B. R. Ratna, Ch. Bahr, and G. Heppke, Abstracts of the 13th International Liquid Crystal Conference, PHA-24, Vancouver, Canada, 1990 (unpublished).
16. H.Y. Liu, C.C. Huang, Ch. Bahr, and G. Heppke, Phys. Rev. Lett. 61, 345 (1998).
17. C.C. Huang and J.M. Viner, Phys. Rev. A 25, 3385 (1982).
18. The application of an electric field perpendicular to the layer normal direction in the chiral (Formula presented) phase leads to the appearance of an induced tilt. Thus, the two phases across the transition (which are (Formula presented) and (Formula presented) in the absence of the field) become isosymmetric. This situation is similar to that of a system with a gas-liquid transition. Consequently, there can only be a first-order transition between the two phases. In the (Formula presented) case, application of an electric field of certain strength results in a critical point, above which the two phases are indistinguishable and evolve continuously from one to another. For further details, see Ch. Bahr and G. Heppke, Phys. Rev. A 41, 4335 (1990).
19. S. Havriliak and S. Negami, J. Polym. Sci., Part C: Polym. Symp. 14, 99 (1966).
20. F. Gouda, K. Skarp, and S.T. Lagerwall, Ferroelectrics 113, 169 (1991);
21. S.U. Vallerien, F. Kramer, H. Kapitza, R. Zentel, and W. Frank, Phys. Lett. A 138, 219 (1989);
22. S. Krishna Prasad, S.M. Khened, V.N. Raja, S. Chandrasekhar, and B. Shivakumar, Ferroelectrics 138, 37 (1993).