Distorted grain boundary phase-A liquid crystal mixed material with wide temperature range and preparation method of grain boundary phase-A liquid crystal mixed material

A liquid crystal mixing and twisting crystal technology, applied in liquid crystal materials, chemical instruments and methods, etc., can solve the problems of weak temperature sensitivity and cumbersome operation, and achieve the effect of easy-to-obtain experimental materials and simple mixing

Active Publication Date: 2018-11-23
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

This new type of liquid crystalline mixture has two different states: one state that shows strong absorption at certain wavelengths while another state displays weak or no response for light waves near it's center frequency. By changing this property between these two states, researchers have been able to create experiments where they could study various properties such as refractive index changes caused when an electric field interacting with molecules within them.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the performance of liquid displays made up of different types of liquid substances called lyotropes. Layers consisting primarily of these substance allow for easy alignment and organization during processing while maintaining their desired shape and property.

Method used

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  • Distorted grain boundary phase-A liquid crystal mixed material with wide temperature range and preparation method of grain boundary phase-A liquid crystal mixed material
  • Distorted grain boundary phase-A liquid crystal mixed material with wide temperature range and preparation method of grain boundary phase-A liquid crystal mixed material
  • Distorted grain boundary phase-A liquid crystal mixed material with wide temperature range and preparation method of grain boundary phase-A liquid crystal mixed material

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Embodiment 1

[0037] This embodiment provides a method for preparing a phase A liquid crystal mixed material with twisted grain boundaries in a wide temperature range, the method comprising:

[0038] The twisted grain boundary A phase was obtained by mixing the smectic A (SmA) phase-cholesteric N* phase transition liquid crystal molecules (SCM), nematic small molecule liquid crystals and nematic-smectic liquid crystal molecules, and passed through the mixing process Control the mixing ratio of the three to obtain the wide temperature range twisted grain boundary A phase, that is, the wide temperature range TGBA phase;

[0039] A chiral additive is added to the TGBA phase after the ratio of the three is determined to adjust the initial reflection wave position of the liquid crystal mixed material in the TGBA phase.

[0040] In the process of mixing the smectic A phase-cholesteric N* phase transition liquid crystal molecules, nematic small molecule liquid crystals and nematic-smectic phase liqui

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Abstract

The invention belongs to the technical field of optical film materials, and relates to a preparation method of a distorted grain boundary phase-A liquid crystal mixed material with a wide temperaturerange. The method comprises the following steps: mixing phase-A-cholest-N*phase transformed liquid crystal molecules, nematic phase micromolecular liquid crystals and nematic phase-smectic phase liquid crystal molecules to obtain a distorted grain boundary phase A, obtaining a wide-temperature-range distorted grain boundary phase A by controlling a mixing ratio of the molecules in the mixing process, thus obtaining the wide-temperature-range TGBA phase; and adding chiral additives into the proportioned TGBA phase to adjust an initial reflection wave site when the liquid crystal mixed materialis in the TGBA phase. The liquid crystal mixed material provided by the invention has wider TGBA phase temperature range, the initial (cooling process) reflection wave site when the liquid crystal mixed material is in TGBA phase can be adjusted at the same time, and the experimental process is simple and easy to operate.

Description

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Claims

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Application Information

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Owner UNIV OF SCI & TECH BEIJING
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