A blue phase observed for a novel chiral compound possessing molecular biaxiality

2005 ◽  
Vol 15 (32) ◽  
pp. 3285 ◽  
Author(s):  
Atsushi Yoshizawa ◽  
Masatada Sato ◽  
Juri Rokunohe
Keyword(s):  
Chiral Compound ◽  
Blue Phase

Phase Behavior Studies on ZnS Nanoparticles Doped Liquid Crystal Mixture

2016 ◽  
Vol 230 (10) ◽  
Author(s):  
Marimuthu Santhosh ◽  
Thangaiyan Chitravel ◽  
Ramasamy Jayaprakasam ◽  
Vellalapalayam Nallagounder Vijayakumar
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Optical Microscope ◽  
Stability Factor ◽  
Zns Nanoparticles ◽  
Chiral Compound ◽  
Cholesteric Phase ◽  
Blue Phase ◽  
Crystal Phases ◽  
Span Width

AbstractThe Liquid Crystalline (LC) mixture is prepared from chiral compound of cholesteryl nonanoate and non-chiral compound of biphenylpyrimidine. The phase change with temperature and corresponding textures of the LC mixtures are analyzed by Polarizing Optical Microscope (POM). LC mixture at its isotropic state is doped with 1% of ZnS nanoparticles and its influence on mesophases is discussed. Normally blue phase is identified within narrow thermal width. The note worthy observation is that the blue phase and cholesteric phase with extended thermal span width in the ZnS doped LC mixture. Also the thermal stability factor of the different liquid crystal phases is discussed.

Blue phase mixtures exhibiting low fractions of a chiral compound experimental observation of some unusual properties

1990 ◽  
Vol 8 (3) ◽  
pp. 407-418 ◽  
Author(s):  
G. Heppke ◽  
H.-S. Kitzerow ◽  
D. Lötzsch ◽  
Ch. Papenfuß
Keyword(s):  
Experimental Observation ◽  
Chiral Compound ◽  
Blue Phase

Dynamic response of a blue phase to an applied field

1992 ◽  
Vol 2 (10) ◽  
pp. 1803-1809
Author(s):  
V. K. Dolganov ◽  
G. Heppke ◽  
H.-S. Kitzerow
Keyword(s):  
Dynamic Response ◽  
Applied Field ◽  
Blue Phase

Biological Production of (S)-acetoin: A State-of-the-Art Review

2019 ◽  
Vol 19 (25) ◽  
pp. 2348-2356 ◽  
Author(s):  
Neng-Zhong Xie ◽  
Jian-Xiu Li ◽  
Ri-Bo Huang
Keyword(s):  
Side Effects ◽  
Chemical Synthesis ◽  
State Of The Art ◽  
Optically Active ◽  
Considerable Progress ◽  
Future Prospects ◽  
Chiral Compound ◽  
Biological Production ◽  
Acetoin Production ◽  
Made In

Acetoin is an important four-carbon compound that has many applications in foods, chemical synthesis, cosmetics, cigarettes, soaps, and detergents. Its stereoisomer (S)-acetoin, a high-value chiral compound, can also be used to synthesize optically active drugs, which could enhance targeting properties and reduce side effects. Recently, considerable progress has been made in the development of biotechnological routes for (S)-acetoin production. In this review, various strategies for biological (S)- acetoin production are summarized, and their constraints and possible solutions are described. Furthermore, future prospects of biological production of (S)-acetoin are discussed.

scholarly journals Diffusionless transformation of soft cubic superstructure from amorphous to simple cubic and body-centered cubic phases

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jie Liu ◽  
Wenzhe Liu ◽  
Bo Guan ◽  
Bo Wang ◽  
Lei Shi ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
X Ray Diffraction ◽  
Photonic Materials ◽  
Simple Cubic ◽  
Cubic Phases ◽  
Transmission Electron ◽  
Phase Liquid ◽  
Blue Phase ◽  
Blue Phases ◽  
Temperature Window

AbstractIn a narrow temperature window in going from the isotropic to highly chiral orders, cholesteric liquid crystals exhibit so-called blue phases, consisting of different morphologies of long, space-filling double twisted cylinders. Those of cubic spatial symmetry have attracted considerable attention in recent years as templates for soft photonic materials. The latter often requires the creation of monodomains of predefined orientation and size, but their engineering is complicated by a lack of comprehensive understanding of how blue phases nucleate and transform into each other at a submicrometer length scale. In this work, we accomplish this by intercepting nucleation processes at intermediate stages with fast cross-linking of a stabilizing polymer matrix. We reveal using transmission electron microscopy, synchrotron small-angle X-ray diffraction, and angle-resolved microspectroscopy that the grid of double-twisted cylinders undergoes highly coordinated, diffusionless transformations. In light of our findings, the implementation of several applications is discussed, such as temperature-switchable QR codes, micro-area lasing, and fabrication of blue phase liquid crystals with large domain sizes.

scholarly journals Shear-enhanced elasticity in the cubic blue phase I

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Shuji Fujii ◽  
Oliver Henrich
Keyword(s):  
Phase I ◽  
Blue Phase

Phase transition sequence in the chiral compound 10FHBBBM7* studied by Raman scattering

1999 ◽  
Vol 26 (12) ◽  
pp. 1805-1811 ◽  
Author(s):  
Yu. I. Yuzyuk ◽  
S. Sarmento ◽  
P. Simeao Carvalho ◽  
A. Almeida ◽  
Filipa Pinto ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Scattering ◽  
Chiral Compound ◽  
Transition Sequence

scholarly journals Low voltage and high contrast blue phase liquid crystal with red-shifted Bragg reflection

2013 ◽  
Vol 102 (1) ◽  
pp. 011113 ◽  
Author(s):  
Jin Yan ◽  
Zhenyue Luo ◽  
Shin-Tson Wu ◽  
Jyh-Wen Shiu ◽  
Yu-Cheng Lai ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Low Voltage ◽  
Bragg Reflection ◽  
High Contrast ◽  
Phase Liquid ◽  
Blue Phase

Amorphous Blue Phase III Exhibiting Submillisecond Response and Hysteresis-Free Switching at Room Temperature

2011 ◽  
Vol 4 (10) ◽  
pp. 101701 ◽  
Author(s):  
Atsushi Yoshizawa ◽  
Michi Kamiyama ◽  
Tetsu Hirose
Keyword(s):  
Room Temperature ◽  
Phase Iii ◽  
Blue Phase
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