Influence of the Phase Separation Mechanism on Polymer Dispersed Liquid Crystalline Materials

1994 ◽  
Vol 243 (1) ◽  
pp. 185-199 ◽  
Author(s):  
A. Golemme ◽  
G. Arabia ◽  
G. Chidichimo
Keyword(s):  
Phase Separation ◽  
Liquid Crystalline ◽  
Separation Mechanism ◽  
Crystalline Materials ◽  
Polymer Dispersed ◽  
Liquid Crystalline Materials ◽  
Phase Separation Mechanism

scholarly journals Recent trends in studies on polymer — dispersed liquid crystal composites

2019 ◽  
Vol 68 (2) ◽  
pp. 15-21
Author(s):  
Stanisław J. Kłosowicz
Keyword(s):  
Material Science ◽  
Liquid Crystalline ◽  
Crystalline Materials ◽  
Polymer Dispersed Liquid Crystal ◽  
Polymer Dispersed Liquid Crystals ◽  
Polymer Dispersed ◽  
Recent Trends ◽  
Materials Used ◽  
Organic Dopants ◽  
Liquid Crystalline Materials

The paper presents a review of results of studies in the field of PDLC material science and physics obtained during last few years and shows the main fields of interest in that subject. It covers an application of new polymers and liquid crystalline materials used to prepare those composites, modification of their properties by different inorganic and organic dopants as well as new optical properties. The evolution of scientific interest regarding PDLC composites in recent years is shown. Keywords: material science, composites, polymer-dispersed liquid crystals, optics, electrooptics.

scholarly journals Liquid-crystalline composites for point temperature measurements

2017 ◽  
Vol 66 (2) ◽  
pp. 13-24
Author(s):  
Edyta Prusińska-Kurstak ◽  
Katarzyna Garbat ◽  
Aleksandra Kołakowska ◽  
Stanisław J. Kłosowicz
Keyword(s):  
High Performance ◽  
Liquid Crystalline ◽  
Cholesteric Liquid Crystal ◽  
Medical Diagnostics ◽  
Poly Vinyl Alcohol ◽  
Crystalline Materials ◽  
Point Temperature ◽  
Polymer Dispersed ◽  
Limited Precision ◽  
Liquid Crystalline Materials

The application of cholesteric liquid crystals and composites containing them for visualization of thermal field and temperature measurement is very well known. Despite all disadvantages as limited precision and adhesion to the studied surface, this method is still of interest. In this work, we present the results of preliminary studies on polymer-dispersed cholesteric liquid crystal (PDCLC) composites designed for visualization and measurement of point temperature changes which can be used in medical diagnostics. Basing on the results of former studies, the perspective PDCLC preparation method as well as high-performance liquid-crystalline chiral nematics were obtained and applied. The microencapsulation in poly(vinyl, alcohol) has been chosen as the method of PDCLC preparation while as liquid-crystalline materials the chiral nematics were adopted. Keywords: material science, liquid-crystalline composites, medical thermography

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...

Degradable ultrathin high-performance photocatalytic hydrogen generator from porous electrospun composite fiber membrane with enhanced light absorption ability

2021 ◽  
Author(s):  
Qian-Yu Wang ◽  
Zheng-Min Zhang ◽  
Lin Liu ◽  
Lu Bai ◽  
Rui-Ying Bao ◽  
...  
Keyword(s):  
Phase Separation ◽  
Light Absorption ◽  
High Performance ◽  
Composite Fiber ◽  
Channel Structure ◽  
Separation Mechanism ◽  
Hydrogen Generator ◽  
Fiber Membrane ◽  
Breath Figure ◽  
Phase Separation Mechanism

Poly(L-lactide) (PLA)/TiO2/Pt composite fiber membrane with internal porous channel structure is fabricated by skillfully tuning the breath figure mechanism and vapor induced phase separation mechanism with solute and solvent matching...

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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