Production of photoelectric regulation metal nanoparticle and liquid crystal array structural box

A technology of metal nanoparticles and nanoparticles, applied in optics, nonlinear optics, instruments, etc., can solve problems that limit practical applications, and achieve the effect of improving spectral response

Inactive Publication Date: 2016-07-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Usually, anisotropic nanoparticles need a voltage of 102-105V to turn and arrange in an isotropic fluid, which greatly limits its practical application.

Method used

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  • Production of photoelectric regulation metal nanoparticle and liquid crystal array structural box
  • Production of photoelectric regulation metal nanoparticle and liquid crystal array structural box
  • Production of photoelectric regulation metal nanoparticle and liquid crystal array structural box

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Experimental program
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Embodiment Construction

[0032] This embodiment adopts the following scheme:

[0033] Step 1. Preparation of metal nanoparticle colloidal solution:

[0034] The preparation methods of gold and silver nanoparticles are similar. The solution containing Ag+ and sodium citrate reducing agent are mixed and stirred, and the atomic metals are quickly aggregated into nano-clusters to obtain a colloidal solution of metal nanoparticles, in which sodium citrate is also used as a stabilizer to shorten the aggregation process.

[0035] Step 2. Metal nanoparticles are dispersed in liquid crystal (such as 5CB):

[0036] The above colloidal solution of metal nanoparticles was centrifuged, and then redissolved in deionized water. In order to realize the vertical alignment anchoring of liquid crystals on the surface of metal nanoparticles, the nanoparticles need to be used to realize surface functionalization (such as modifying DMOAP). The method is: mix the nanoparticle solution in the MPTMS ethanol solution, and ul...

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Abstract

The invention provides a production method of a photoelectric regulation metal nanoparticle and liquid crystal array structural box, and belongs to the technical field of photoelectricity. The production method provided by the invention is based on nano-structure polarization configuration, molecular configuration matching and an LSPR (Localized Surface Plasmon Resonance) principle of precious metal nanoparticles, utilizes a laser evanescent standing wave focused capturing deposition technology, and changes light intensity of laser evanescent standing waves so as to regulate the spatial form of a metal nano array and liquid crystal composite structure; when an optical field is utilized to regulate focused deposition, different voltages are loaded between upper and lower electrodes, and an electric field between the electrodes is changed to regulate the spatial structure of the metal nanoparticle and liquid crystal composite array structure so as to achieve different spectral responses and photoelectric regulation in a liquid crystal box. The metal nanoparticle and liquid crystal composite array structural box produced by the production method provided by the invention is helpful for providing a novel principle and a novel method for a novel surface plasmon photoelectric display technology.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to the production of a photoelectrically regulated metal nanoparticle-liquid crystal array structure box. Background technique [0002] In the field of information optics, liquid crystal optoelectronic devices have important applications in optical displays, optical switches, and optical modulators. Liquid crystal-nanoparticle composites were first applied to improve traditional liquid crystal display and storage devices. In addition to the application in traditional liquid crystal devices, materials with special optical properties, such as photonic crystals and special optical materials, can be developed by using liquid crystal nanoparticles. [0003] Surface plasmon polariton (SPP) is a kind of electron cluster oscillation generated at the interface between metal and medium based on the interaction of external electromagnetic radiation and free electrons on th...

Claims

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Application Information

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