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A method for preparing a liquid crystal cell with an array of metal nanoparticles

A metal nanoparticle and nanoparticle technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of inconvenience, complex process, high cost, and achieve the effect of firm connection, small particle gap, and guaranteed stability.

Inactive Publication Date: 2018-12-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

But its process is complex, costly and inconvenient to use

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  • A method for preparing a liquid crystal cell with an array of metal nanoparticles
  • A method for preparing a liquid crystal cell with an array of metal nanoparticles
  • A method for preparing a liquid crystal cell with an array of metal nanoparticles

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Embodiment Construction

[0036] A method for preparing a liquid crystal cell with a metal nanoparticle array, the process of which is as follows figure 1 shown, including the following steps:

[0037] Step 1. Preparation of colloidal solution of metal nanoparticles

[0038] A colloidal solution of metal nanoparticles with a diameter of 22nm was prepared by photochemical reduction;

[0039] Step 2. ITO conductive film is plated on the surface of the inverted positive four glass prism

[0040] Such as figure 2 As shown in (a), utilize the electron beam evaporation method to coat a dense ITO conductive film with a thickness of 70nm on the upper surface of the inverted positive tetragonal prism, wherein the material of the positive tetragonal prism is flint glass with high refractive index. The side length of the surface is 30mm, the height is 20mm, and the angle between the four sides and the upper surface is 50°;

[0041] Step 3. Laser evanescent standing wave focusing to deposit nanoparticles

[...

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Abstract

The invention provides a method for preparing a liquid crystal box with a metal nanoparticle array structure, which can manufacture novel liquid crystal displays and photoelectric sensors based on photoelectric control, and belongs to the field of photoelectric technology. Based on the principle of nanostructure polarization configuration, molecular configuration matching and localized surface plasmon resonance (LSPR) of metal nanoparticles, the present invention utilizes laser evanescent standing wave focusing deposition technology to prepare a polarization-fixed metal nanoparticle array, That is, the single-sided substrate of the liquid crystal cell. Using the single-sided substrate to make a liquid crystal cell can regulate the arrangement and orientation of liquid crystal molecules through the voltage between electrodes, thereby regulating the anisotropic LSPR of the metal nanoparticle array structure, and then regulating the spectral response and photoelectric characteristics of the liquid crystal cell. The preparation method of the nano-array structure liquid crystal cell helps to provide new principles and new methods for new photoelectric display technology, nanometer characterization technology and sensor technology.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a method for preparing a liquid crystal box with a metal nanoparticle array. Background technique [0002] When light is incident on a nanoparticle made of noble metal, if the frequency of the incident photon matches the overall vibration frequency of the noble metal nanoparticle or metal island conduction electron, the nanoparticle or metal island will have a strong absorption effect on the photon energy, The phenomenon of Localized Surface Plasmon Resonance (LSPR) will occur. LSPR is a very unique optical characteristic of metal nanostructures. The research on nanostructure systems based on LSPR has formed one of the rapidly developing hot research fields in the world, that is, nanosurface plasmon photonics, which is a study of nanomaterials and substances. Interacting Emerging Disciplines. [0003] Metal nanoparticles such as gold, silver, and platinum ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333
CPCG02F1/1333
Inventor 黄小平侯宇蒙李玉齐明熙王影陈涛
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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