Study of de Vries behaviour of the smectic A*–smectic C* phase transition

Homologue series exhibiting the SmA* and SmC* phases have been studied and the tendency to de Vries behaviour has been described for compounds with decreasing length of non-chiral chain. Dielectric spectroscopy has been performed with the aim to characterize dielectric properties and compare different homologue compounds exhibiting de Vries properties with those showing classical behaviour.

[1]  N. Kapernaum,et al.  First photoresponsive liquid-crystalline materials with small layer shrinkage at the transition to the ferroelectric phase , 2009 .

[2]  N. Kapernaum,et al.  Effect of lateral methoxy substitution on mesomorphic and structural properties of ferroelectric liquid crystals , 2008 .

[3]  M. Krueger,et al.  Nature of smectic A*-C* phase transitions in a series of ferroelectric liquid crystals with little smectic layer shrinkage. , 2007, The Journal of chemical physics.

[4]  M. Osipov,et al.  Molecular model for de Vries type smectic- A -smectic- C phase transition in liquid crystals. , 2007, Physical review. E, Statistical, nonlinear, and soft matter physics.

[5]  J. Toner,et al.  Disordering to order: de Vries behavior from a Landau theory for smectic phases. , 2006, Physical review letters.

[6]  O. Panarina,et al.  Investigation of de Vries SmA* mesophases in low molecular weight organosiloxane compounds , 2006 .

[7]  J. Lagerwall,et al.  Current topics in smectic liquid crystal research. , 2006, Chemphyschem : a European journal of chemical physics and physical chemistry.

[8]  M. Krueger,et al.  Dielectric spectroscopy of de Vries-type smectic-A* -smectic-C* transitions. , 2005, Physical review. E, Statistical, nonlinear, and soft matter physics.

[9]  M. Glogarová,et al.  New ferroelectric liquid crystalline materials with an azo group in the molecular core , 2004 .

[10]  S. T. Wang,et al.  Experimental investigations of one liquid-crystal compound exhibiting the no-layer-shrinkage effect near the Sm-A-Sm- C(*) transition. , 2004, Physical review. E, Statistical, nonlinear, and soft matter physics.

[11]  H. Dürr,et al.  Photochromism : molecules and systems , 2003 .

[12]  J. Lagerwall,et al.  Optical and x-ray evidence of the "de Vries" Sm-A*-Sm-C* transition in a non-layer-shrinkage ferroelectric liquid crystal with very weak interlayer tilt correlation. , 2002, Physical review. E, Statistical, nonlinear, and soft matter physics.

[13]  F. Giesselmann,et al.  Thermodynamics of the photoferroelectric effect in smectic-C* liquid crystals , 2002 .

[14]  F. Giesselmann,et al.  Kinetics of the photoferroelectric effect in chiral smectic-C liquid crystals studied by time-resolved measurements of spontaneous electric polarization and director tilt angle. , 2002, Chemphyschem : a European journal of chemical physics and physical chemistry.

[15]  S. Lagerwall,et al.  Smectic-A*-smectic-C* transition in a ferroelectric liquid crystal without smectic layer shrinkage. , 1999, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[16]  F. Gouda.  Dielectric relaxation spectroscopy of chiral smectic liquid crystals , 1992 .

[17]  M. Glogarová,et al.  The effect of biasing electric field on the soft mode in the vicinity of the ferroelectric phase transition in liquid crystals , 1989 .

[18]  W. David.  Ferroelastic phase transition in BiVO4: IV. Relationships between spontaneous strain and acoustic properties , 1983 .

[19]  Ian G. Wood,et al.  Ferroelastic phase transition in BiVO4 I. Birefringence measurements using the rotating-analyser method , 1980 .

[20]  A. D. Vries.  Experimental Evidence Concerning Two Different Kinds of Smectic C to Smectic A Transitions , 1977 .