Experimental investigations of one liquid-crystal compound exhibiting the no-layer-shrinkage effect near the Sm-A-Sm- C(*) transition.
Three experimental probes have been employed to investigate the nature of the smectic- A -smectic- C ( Sm-A-Sm- C(*) ) phase transition of one liquid-crystal compound showing almost no layer-shrinkage effect through the transition. Results from both x-ray diffraction and optical studies indicate that the compound exhibits a crossover behavior of different molecular packing arrangements within the bulk Sm-A phase window. The calorimetry results show a significant critical anomaly near the Sm-A-Sm- C(*) transition, although it was found to be weakly first order.
Huang
C C
CC
School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA.
Wang
S T
ST
Han
X F
XF
Cady
A
A
Pindak
R
R
Caliebe
W
W
Ema
K
K
Takekoshi
K
K
Yao
H
H