Liquid crystalline amorphous blue phase and its large electrooptical Kerr effect

@article{Le2011LiquidCA,
  title={Liquid crystalline amorphous blue phase and its large electrooptical Kerr effect},
  author={Khoa V. Le and Satoshi Aya and Yuji Sasaki and Hyunhee Choi and Fumito Araoka and Kenji Ema and J{\'o}zef Mieczkowski and Antal J{\'a}kli and Ken Ishikawa and Hideo Takezoe},
  journal={Journal of Materials Chemistry},
  year={2011},
  volume={21},
  pages={2855-2857}
}
  • K. Le, S. Aya, H. Takezoe
  • Published 14 February 2011
  • Physics, Materials Science
  • Journal of Materials Chemistry
An amorphous blue phase III with low and wide thermal range (∼20 °C) including room temperature is induced by doping a bent-core nematic with a strong chiral material. We confirm that the electrooptical response is due to the Kerr effect, with the Kerr constant being up to two orders of magnitude larger than conventional Kerr materials such as nitrobenzene. 
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Calorimetric measurements and optical observations have been performed to investigate the effect of chirality on a bent-core nematic (BCN) material which can exhibit an amorphous blue phase (BPIII)
Liquid-crystalline blue phase II system comprising a bent-core molecule with a wide stable temperature range.
TLDR
EO observations show that the BPII produced exhibited stable EO performance based on the EO Kerr effect, and this material demonstrated very fast, sub-millisecond-scale, response times, thus showing potential for use in high-speed EO devices.
Fast tunable reflection in amorphous blue phase III liquid crystal
The dynamic reflection spectra of amorphous blue phase III were investigated. When an electric field is applied to a blue phase III cell, the reflected wavelength does not shift obviously, but the
Unusual Electro-Optic Kerr Response in a Self-Stabilized Amorphous Blue Phase with Nanoscale Smectic Clusters.
  • K. Le, M. Hafuri, F. Araoka
  • Physics
    Chemphyschem : a European journal of chemical physics and physical chemistry
  • 2016
TLDR
The electro-optic response in the "foggy" amorphous blue phase (BPIII) as well as in the isotropic phase is investigated and the Kerr constant was measured and found to be ∼500 pm V(-2) , which is the largest among bent-core BP systems reported so far and comparable with that of polymer-stabilized BPs.
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Unusual electro-optical behavior in a wide-temperature BPIII cell.
TLDR
Because the phase transition from BPIII to chiral nematic phase does not happen, the device shows no hysteresis effect and no residual birefringence, exhibits fast response, and can be a candidate for fast photonic application.
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Electro-optical switching with low voltage, free hysteresis and fast response speed is achieved in a facile manner by dispersing a small amount of ferroelectric nanoparticles (NPs) into blue phase
Polymer-stabilized nanoparticle-enriched blue phase liquid crystals
Electro-optical switching with low voltage, no hysteresis and fast response speed is achieved in polymer-stabilized nanoparticle-enriched blue phase liquid crystals with a wide temperature range, and
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