Dynamical Aspects of Switching between Surface Stabilized States in Smectic C*Ferroelectric Liquid Crystal

1985 ◽  
Vol 24 (S2) ◽  
pp. 899 ◽  
Author(s):  
Yukio Ouchi ◽  
Ken Ishikawa ◽  
Hideo Takezoe ◽  
Atsuo Fukuda ◽  
Katsumi Kondo ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Ferroelectric Liquid Crystal ◽  
Smectic C

Linear defects forming the ground state of polar free standing smectic-C* films

Soft Matter ◽  
2018 ◽  
Vol 14 (35) ◽  
pp. 7174-7179 ◽  
Author(s):  
Pavel V. Dolganov ◽  
Efim I. Kats ◽  
Vladimir K. Dolganov ◽  
Philippe Cluzeau
Keyword(s):  
Liquid Crystal ◽  
Ground State ◽  
Ferroelectric Liquid Crystal ◽  
Free Standing ◽  
Smectic C ◽  
Linear Defects

A striped labyrinth-like structure can form in free-standing films of a calamitic ferroelectric liquid crystal near the temperatures of thinning transitions.

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.

Vibrational Studies on the Dynamics of Switching between the Surface-Stabilized States of a Ferroelectric Liquid Crystal by Asynchronous Time-Resolved Fourier Transform Infrared Spectroscopy

1993 ◽  
Vol 47 (9) ◽  
pp. 1370-1375 ◽  
Author(s):  
Koji Masutani ◽  
Akira Yokota ◽  
Yukio Furukawa ◽  
Mitsuo Tasumi ◽  
Atsushi Yoshizawa
Keyword(s):  
Liquid Crystal ◽  
Time Behavior ◽  
Ferroelectric Liquid Crystal ◽  
Slow Process ◽  
Fast Process ◽  
Time Resolved ◽  
Smectic C ◽  
Rigid Molecule ◽  
Vibrational Studies

Time-resolved polarized infrared spectra have been observed from a ferroelectric liquid crystal (chiral smectic C phase) consisting of a chiral dopant and a nonchiral smectic base during the course of switching between the surface-stabilized states. A primary fast process and the subsequent slow process have been observed for all infrared bands. The chiral dopant and smectic base molecules move simultaneously. The observed time behavior of the infrared bands can be mostly explained by the reorientation of a rigid molecule whose rotational motion around the molecular long axis is almost free. The static intensities and the time behavior of the ester and keto C=O stretching bands do not seem to be consistent with the simple view on the role of these groups.

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