scholarly journals First ferrocene-containing low molar mass organosiloxane liquid-crystalline materials

1999 ◽  
Vol 9 (5) ◽  
pp. 1085-1090 ◽  
Author(s):  
Harry J. Coles ◽  
Sebastien Meyer ◽  
Petra Lehmann ◽  
Robert Deschenaux ◽  
Isabelle Jauslin
Keyword(s):  
Liquid Crystalline ◽  
Molar Mass ◽  
Crystalline Materials ◽  
Liquid Crystalline Materials

Novel Vitrified Liquid Crystals and Potential Applications

1996 ◽  
Vol 425 ◽  
Author(s):  
S. H. Chen ◽  
H. Shi ◽  
B. M. Conger ◽  
D. Katsis ◽  
J. C. Mastrangelo
Keyword(s):  
Thin Films ◽  
Preliminary Data ◽  
Liquid Crystalline ◽  
Molar Mass ◽  
Defect Formation ◽  
Crystalline Materials ◽  
Polarization Control ◽  
Potential Applications ◽  
Control Devices ◽  
Liquid Crystalline Materials

AbstractAn overview is presented for a generic approach to low molar mass liquid crystalline materials capable of vitrification into morphologically stable, optically anisotropic thin films. Potential applications as polarization control devices, optical notch filters, and luminescent elements will be explored. Preliminary data for defect formation and annihilation will also be presented to illustrate an advantage of low molar mass materials over polymer analogs.

On resolving fine periodic microstructures in the optical microscope

1989 ◽  
Vol 47 ◽  
pp. 364-365
Author(s):  
W.S. Putnam ◽  
C. Viney
Keyword(s):  
Liquid Crystalline ◽  
Numerical Aperture ◽  
Polarized Light ◽  
Normal Incidence ◽  
Optical Microscope ◽  
Angle Of Incidence ◽  
Resolution Limit ◽  
Crystalline Materials ◽  
Periodic Microstructures ◽  
Liquid Crystalline Materials

Many sheared liquid crystalline materials (fibers, films and moldings) exhibit a fine banded microstructure when observed in the polarized light microscope. In some cases, for example Kevlar® fiber, the periodicity is close to the resolution limit of even the highest numerical aperture objectives. The periodic microstructure reflects a non-uniform alignment of the constituent molecules, and consequently is an indication that the mechanical properties will be less than optimal. Thus it is necessary to obtain quality micrographs for characterization, which in turn requires that fine detail should contribute significantly to image formation.It is textbook knowledge that the resolution achievable with a given microscope objective (numerical aperture NA) and a given wavelength of light (λ) increases as the angle of incidence of light at the specimen surface is increased. Stated in terms of the Abbe resolution criterion, resolution improves from λ/NA to λ/2NA with increasing departure from normal incidence.

Designing Chemically Selective Liquid Crystalline Materials that Respond to Oxidizing Gases

2021 ◽  
Author(s):  
Nanqi Bao ◽  
Jake Gold ◽  
Tibor Szilvasi ◽  
Huaizhe Yu ◽  
Robert Twieg ◽  
...  
Keyword(s):  
Computational Methods ◽  
First Principles ◽  
Liquid Crystalline ◽  
Soft Materials ◽  
Crystalline Materials ◽  
Liquid Crystalline Materials ◽  
Chemically Selective ◽  
Kinetics Of

Computational methods can provide first-principles insights into the thermochemistry and kinetics of reactions at interfaces, but this capability has not been widely leveraged to design soft materials that respond selectively...

Orthoconic antiferroelectric liquid crystalline materials

2005 ◽  
Vol 72 (9) ◽  
pp. 655
Author(s):  
K. Czuprynski ◽  
J. Gasowska ◽  
M. Tykarska ◽  
P. Kula ◽  
E. Sokól ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Crystalline Materials ◽  
Liquid Crystalline Materials
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