The Domain Mode in a Single Component Ferroelectric Liquid Crystal - Dielectrical and Electrooptical Investigations

作者: S. Hiller , L. A. Beresnev , S. Wrobel , W. Haase

DOI: 10.1002/BBPC.19930971011

关键词:

摘要: In this paper we present the dielectric and electrooptic investigations on single component ferroelectric liquid crystal 3-Octyloxy-6-[2-fluoro-4-(2-fluoro-octyloxy)phenyl]-pyridine (FFP), synthesized by E. Merck Company. The were performed in an ITO-cell with thickness of 900 nm. sample was aligned planarly. Under polarization microscope a Domain structure observed. threshold voltage for helix unwinding SmC* phase determined. The complex permittivity e* measured frequency range from 10 Hz up to MHz. Beside Goldstone mode, mode relaxation found spectra substance. Due small cell only one process, namely surface could be detected. BIAS field temperature dependent measurements process performed. order obtain characteristic strengths dispersion frequencies observed processes Havriliak-Negami equation fitted data obtained.

参考文章(14)
E. F. Carr, R. D. Spence, Influence of a Magnetic Field on the Microwave Dielectric Constant of a Liquid Crystal The Journal of Chemical Physics. ,vol. 22, pp. 1481- 1485 ,(1954) , 10.1063/1.1740443
Noel A. Clark, Sven T. Lagerwall, Submicrosecond bistable electro‐optic switching in liquid crystals Applied Physics Letters. ,vol. 36, pp. 899- 901 ,(1980) , 10.1063/1.91359
W. Haase, S. Hiller, M. Pfeiffer, L. A. Beresnev, The domain mode in ferroelectric liquid crystals; electrooptical and dielectric investigations Ferroelectrics. ,vol. 140, pp. 37- 44 ,(1993) , 10.1080/00150199308008261
C. B. Sawyer, C. H. Tower, Rochelle Salt as a Dielectric Physical Review. ,vol. 35, pp. 269- 273 ,(1930) , 10.1103/PHYSREV.35.269
G. Andersson, K. Flatischler, L. Komitov, S. T. Lagerwall, K. Skarp, B. Stebler, Smectic layer switching using a field-induced N*-C* phase transition Ferroelectrics. ,vol. 113, pp. 361- 367 ,(1991) , 10.1080/00150199108014074
M. Pfeiffer, S. Wrobel, L. A. Beresnev, W. Haase, Goldstone Mode Relaxation in the Ferroelectric Phases of 8OSI Molecular Crystals and Liquid Crystals. ,vol. 202, pp. 193- 206 ,(1991) , 10.1080/00268949108035670