Effect of Boundary Conditions on the Pitch and Helical Twisting Power of Chiral Solutes in Nematic Liquid Crystals

1994 ◽  
Vol 239 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Wen Shang ◽  
M. M. Labes
Keyword(s):  
Liquid Crystals ◽  
Boundary Conditions ◽  
Nematic Liquid Crystals ◽  
Helical Twisting Power

On the Parity in Helical Twisting Power of Ru(III) 1,3-Diketonates ofC2Symmetry in Nematic Liquid Crystals

2005 ◽  
Vol 127 (23) ◽  
pp. 8453-8456 ◽  
Author(s):  
Jun Yoshida ◽  
Hisako Sato ◽  
Akihiko Yamagishi ◽  
Naomi Hoshino
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Helical Twisting Power

Precisely Tuning Helical Twisting Power via Photoisomerization Kinetics of Dopants in Chiral Nematic Liquid Crystals

Langmuir ◽  
2018 ◽  
Vol 34 (2) ◽  
pp. 700-708 ◽  
Author(s):  
Dongxu Zhao ◽  
Yuan Qiu ◽  
Weinan Cheng ◽  
Shuguang Bi ◽  
Hong Wang ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic ◽  
Kinetics Of ◽  
Helical Twisting Power

scholarly journals STABILITY FOR NEMATIC LIQUID CRYSTALS WITH STRETCHING TERMS

2010 ◽  
Vol 20 (09) ◽  
pp. 2937-2942 ◽  
Author(s):  
B. CLIMENT-EZQUERRA ◽  
F. GUILLÉN-GONZÁLEZ ◽  
M. A. RODRÍGUEZ-BELLIDO
Keyword(s):  
Liquid Crystals ◽  
Asymptotic Stability ◽  
Boundary Conditions ◽  
Present Article ◽  
Periodic Boundary ◽  
Nematic Liquid Crystals ◽  
Periodic Boundary Conditions ◽  
Stability Properties ◽  
Crystal Model ◽  
Different Shapes

We study a nematic crystal model that appeared in [Liu et al., 2007], modeling stretching effects depending on the different shapes of the microscopic molecules of the material, under periodic boundary conditions. The aim of the present article is two-fold: to extend the results given in [Sun & Liu, 2009], to a model with more complete stretching terms and to obtain some stability and asymptotic stability properties for this model.

Synthesis of New Chiral Disubstituted Binaphthol Derivatives and their use as the Chiral Dopants

1996 ◽  
Vol 425 ◽  
Author(s):  
H.-J. Deussen ◽  
P. V. Shibaev ◽  
R. A. Vinokur ◽  
K. Schaumburg ◽  
T. Bjornholm ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Temperature Dependence ◽  
Liquid Crystalline ◽  
Molecular Conformation ◽  
Molecular Model ◽  
Nematic Liquid Crystals ◽  
Spatially Extended ◽  
Chiral Dopants ◽  
Helical Twisting Power

AbstractA number of new chiral binaphthol (BN) derivatives with different substituents in the 6,6'-positions in open and bridged forms have been synthesized. Their possible liquid crystalline properties and their helical twisting power (B) of three different nematic liquid crystals (LCs) were investigated. Derivatives with spatially extended substituents in the 6,6'-positions (e.g. styryl or vinil) show unusual high helical twisting power (up to 120 μm–1). A direct correlation between the magnitude of β and the length of the substituents was found.From the different temperature dependence of β of the open and bridged BNs, a molecular model was developed relating the molecular conformation and twisting power

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