X-ray and SEM Observations of Smectic A Phase and Dried Gel Fibers Formed in a Fine Capillary

2005 ◽  
Vol 34 (12) ◽  
pp. 1650-1651 ◽  
Author(s):  
Yuki Morita ◽  
Kosuke Kawabe ◽  
Fusheng Zhang ◽  
Hiroaki Okamoto ◽  
Shunsuke Takenaka ◽  
...  
Keyword(s):  
X Ray ◽  
Smectic A ◽  
Smectic A Phase ◽  
Fine Capillary

Structure and Thermal Behaviour of a Thermotropic Liquid Crystalline Polyimide (PI-LC)

1998 ◽  
Vol 10 (1) ◽  
pp. 147-153 ◽  
Author(s):  
M Tanaka ◽  
M Konda ◽  
M Miyamoto ◽  
Y Kimura ◽  
A Yamaguchi
Keyword(s):  
Phase Transition ◽  
Thermal Analysis ◽  
Nematic Phase ◽  
Liquid Crystalline ◽  
Polarized Light ◽  
Isotropic Phase ◽  
X Ray ◽  
Smectic A ◽  
Smectic C ◽  
Smectic A Phase

Anomalous solid structures formed by a thermotropic liquid crystalline polyimide (PI-LC) were investigated by thermal analysis, polarized light microscopy and x-ray analysis. It was revealed that PI-LC should undergo a phase transition from the crystalline to the isotropic phase through the smectic or nematic phase in the temperature range 277–300 °C. The PI-LC filament extruded at 280 °C, at which temperature the polymer was in liquid crystalline phase, was formed to have a structure similar to the smectic C phase, while that extruded and melt-drawn at 310 °C, at which temperature the polymer was in the isotropic phase, had a structure similar to the smectic A phase.

X-ray critical scattering study of nematic-smectic A phase transition in a 8DBT/120CB mixture

1988 ◽  
Vol 105 (2) ◽  
pp. K107-K110 ◽  
Author(s):  
B. Pura ◽  
J. Przedmojski ◽  
K. Wentowska ◽  
R. D??browski ◽  
K. Czupryński
Keyword(s):  
Phase Transition ◽  
X Ray ◽  
Smectic A ◽  
Smectic A Phase ◽  
Scattering Study

X-Ray Study of Modulated Smectic A Phase

1990 ◽  
Vol 192 (1) ◽  
pp. 19-24 ◽  
Author(s):  
B. I. Ostrovskii ◽  
M. A. Saidachmetov
Keyword(s):  
X Ray ◽  
Smectic A ◽  
Smectic A Phase

X-Ray Diffraction Study on the Reentrant Smectic A Phase in a Binary Liquid Crystal System

1987 ◽  
Vol 149 (1) ◽  
pp. 49-60 ◽  
Author(s):  
Hirofumi Sakashita ◽  
Shigeki Komori ◽  
Kazuya Kazuya Kamon ◽  
Hikaru Terauchi ◽  
Yo Shimizu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystal System ◽  
Binary Liquid ◽  
Smectic A ◽  
Liquid Crystal System ◽  
Smectic A Phase

scholarly journals Orthoconic antiferroelectric liquid crystals containing biphenyl, terphenyl, or naphthyl mesogenic unit

2007 ◽  
Vol 15 (1) ◽  
Author(s):  
R. Dąbrowski ◽  
W. Drzewiński ◽  
J. Dziaduszek ◽  
J. Gąsowska ◽  
P. Henderson ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Polarized Light ◽  
New Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Smectic A ◽  
Smectic C ◽  
Antiferroelectric Liquid Crystals ◽  
Mesogenic Unit ◽  
Smectic A Phase

AbstractThree homologous series of orthoconic (45 degree tilt) antiferroelectric liquid crystals containing either naphthyl or terphenyl groups as mesogenic unit have been synthesized and their mesomorphic behaviour investigated by DSC and polarized light microscopy, and their properties discussed. X-ray diffraction studies have shown the presence of a de Vries-type smectic A phase which does not exhibit a layer shrinkage on transition to the ferroelectric smectic C phase. Mixtures of the new materials have been formulated and their electro-optical properties investigated for their use in surface stabilized orthoconic antiferroelectric liquid crystal (SSOAFLC) devices

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