Polymer-stabilized liquid crystal blue phases

  title={Polymer-stabilized liquid crystal blue phases},
  author={Hirotsugu Kikuchi and Masayuki Yokota and Yoshiaki Hisakado and Huai Yang and Tisato Kajiyama},
  journal={Nature Materials},
Blue phases are types of liquid crystal phases that appear in a temperature range between a chiral nematic phase and an isotropic liquid phase. Because blue phases have a three-dimensional cubic structure with lattice periods of several hundred nanometres, they exhibit selective Bragg reflections in the range of visible light corresponding to the cubic lattice. From the viewpoint of applications, although blue phases are of interest for fast light modulators or tunable photonic crystals, the… 
Liquid Crystalline Soft Materials with 3-Dimensional Periodic Structure
The blue phases (BPs) are kinds of liquid crystal (LC) phases that appear in a temperature range between a chiral nematic phase and an isotropic liquid phase. Since BPs have a three-dimensional cubic
Liquid Crystalline Blue Phases
Blue phases are known to appear in chiral liquid crystals in a small temperature range between the chiral nematic phase and the isotropic one. They are optically active, non-birefringent, and they
Liquid Crystal Oligomers Exhibiting a Blue Phase
Liquid crystal blue phases have a fluid lattice whose structure is stabilized by cubic defects. Blue phases, which are classified as BPIII, BPII and BPI observed on cooling, exist over a small
Liquid crystal ‘blue phases’ with a wide temperature range
It is proposed that the unusual behaviour of these blue phase materials is due to their dimeric molecular structure and their very high flexoelectric coefficients, which sets out new theoretical challenges and potentially opens up new photonic applications.
Quantum Dot-Driven Stabilization of Liquid-Crystalline Blue Phases
Liquid crystals hosting nanoparticles comprise a fascinating research field, ranging from fundamental aspects of phase transitions to applications in optics and photonics. Liquid-crystalline phases
Stable Amorphous Blue Phase of Bent-Core Nematic Liquid Crystals Doped with a Chiral Material
We report an induction of the blue phase III (BPIII) at a relatively low and wide (over 20 °C) temperature range in nematogenic achiral bent-core liquid crystals doped with a high twisting power
Polymer Stabilization of Liquid-Crystal Blue Phase II toward Photonic Crystals.
This work fabricates a polymer-stabilized BPII over a temperature range of 50 °C including room temperature and demonstrates the possibility of practical application of the polymer- stabilization BPII to photonic crystals.
Directed self-assembly of liquid crystalline blue-phases into ideal single-crystals
A strategy that relies on nano-patterned substrates for preparation of stable, macroscopic single-crystal blue-phase materials and provides a potential avenue to fully exploit the electro-optical properties of blue phases, which have been hindered by the existence of grain boundaries.
Electro-Optic Potential of Room and High Temperature Polymer Stabilised Blue Phase Liquid Crystal
In the field of liquid crystals, blue phases (BPs) are one of the most unique and interesting sub-phases. Blue-phase liquid crystal holds the potential to become next-generation display and photonics
Blue Phase: Shining Star of Liquid Crystals
In this study, general information about the physical properties, photonics and optical applications of the blue phase liquid crystals is given. The blue phase is a liquid crystal phase between the


Theory of the Blue Phases of Chiral Nematic Liquid Crystals
In the condensed matter physics community there has been much recent interest in materials with competing interactions. Because these materials are frustrated (the different terms in the free energy
Electric Field Induced Phase Transitions and Colour Switching in the Blue Phases of Chiral Nematic Liquid Crystals
Abstract The phase behavior and electro-optic phenomena observed in a new system of blue phase mixtures have been determined. The mixtures, which include both cyanobiphenyl and chiral ester
Defects in liquid crystals
The most striking feature of liquid crystals is the wide variety of visual patterns they display. These patterns, such as those shown in figure 1 and on the cover, are due almost entirely to the
Chirality in liquid crystals
Chirality has become arguably the most important and complex topic of research in liquid crystals today. The reduced symmetry in these organized phases leads to a variety of novel phase structures,
Polymer dispersed nematic liquid crystal for large area displays and light valves
A new electro‐optical material based on nematic liquid crystal dispersed in a polymer matrix has recently been introduced by Fergason. This technology (termed NCAP, for nematic curvilinear aligned
Aggregation States and Electro-optical Properties Based on Light Scattering of Polymer/(Liquid Crystal) Composite Films
Electro-optical properties based on light scattering controlled by a.c. electric field were investigated for polymer/(liquid crystal) composite films. Scanning electron microscopic observation for
The physics of liquid crystals
Part 1 Liquid crystals - main types and properties: introduction - what is a liquid crystal? the building blocks nematics and cholesterics smectics columnar phases more on long-, quasi-long and
Electro-optic effects in blue phases
Abstract A theory of electro-optic and elasto-optic effects in the blue phases of cholesteric liquid crystals is developed. The case of small structure deformations and a weak field is considered:
Observation of blue phases in chiral networks
Abstract We report the first observation of cholesteric blue phases in chiral anisotropic polymer networks. In two-component mixtures of a chiral and a non-chiral diacrylate, we observed typical
Field controlled light scattering from nematic microdroplets
The light scattering and electro‐optic response of new material with display potential are investigated. The materials consist of microdroplets of nematic liquid crystals which are spontaneously