Influence of Piezoelectric Bilinear and Biquadratic Coupling in Smectic C* Phase of Ferroelectric Liquid Crystal

1997 ◽  
Vol 11 (29) ◽  
pp. 3491-3502 ◽  
Author(s):  
Susanta Sinha Roy ◽  
Subir Kumar Roy ◽  
Prabir K. Mukherjee
Keyword(s):  
Phase Transition ◽  
Free Energy ◽  
Liquid Crystal ◽  
Transition Temperature ◽  
Order Parameter ◽  
Ferroelectric Liquid Crystal ◽  
Coupling Constant ◽  
Theoretical Relation ◽  
Smectic C ◽  
Quadrupolar Order

A theoretical relation has been developed from the Landau free energy expansion between SmC–SmA phase transition temperature of chiral smectic compound and that of its nonchiral analogue. The bilinear and biquadratic coupling constant and the quadrupolar order parameter have been determined from the extended microscopic model in the chiral smectic-C (Sm-C*) phase of four ferroelectric liquid crystal (FLC) materials and results have been discussed.

X-ray microdiffraction study of the half-V-shaped switching liquid crystal

2004 ◽  
Vol 19 (1) ◽  
pp. 53-55 ◽  
Author(s):  
Kazuhiro Takada ◽  
Takashi Noma ◽  
Takeshi Togano ◽  
Taihei Mukaide ◽  
Atsuo Iida
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Formation Process ◽  
Ferroelectric Liquid Crystal ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transient Layer ◽  
Smectic C ◽  
Layer Structures ◽  
Temperature Controlled

Local layer structures and their formation process in a half-V-shaped switching ferroelectric liquid crystal (HV-FLC) were investigated by means of synchrotron X-ray microdiffraction. The HV-FLC is a FLC that has a cholesteric–chiral smectic C (Ch–SmC*) phase transition sequences. X-ray microdiffraction measurements revealed that the SmC* phase in the HV-FLC was composed of asymmetric chevron and inclined-bookshelf structures. In addition, temperature-controlled X-ray diffraction measurements showed that the transient layer structures appeared during the Ch to SmC* phase transition.

Local Layer Structures in Ferroelectric Liquid Crystal Cells Filled with a Material Which Exhibits Cholesteric-Chiral Smectic C Phase Transition

2003 ◽  
Vol 42 (Part 1, No. 7A) ◽  
pp. 4431-4437 ◽  
Author(s):  
Kazuhiro Takada ◽  
Takashi Noma ◽  
Takeshi Togano ◽  
Taihei Mukaide ◽  
Atsuo Iida
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Ferroelectric Liquid Crystal ◽  
Smectic C ◽  
Layer Structures ◽  
Crystal Cells

Total-Reflection Switch Using High-Tilt-Angle Cholesteric-Smectic C*Phase Transition Ferroelectric Liquid Crystal

1991 ◽  
Vol 30 (Part 1, No. 10) ◽  
pp. 2535-2539 ◽  
Author(s):  
Ashok Manikrao Biradar ◽  
Sukhwant Singh Bawa ◽  
Chhatra Pal Sharma ◽  
Subhas Chandra
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Tilt Angle ◽  
Total Reflection ◽  
Ferroelectric Liquid Crystal ◽  
Smectic C
Sign in / Sign up

Export Citation Format

Share Document