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Nonlinear optical material based on metal nanometer cluster array and preparation method thereof

A metal nanocluster, nonlinear optics technology, applied in the field of nonlinear optical materials and preparation, can solve the problems of anisotropy, affecting the nonlinear optical effect of materials, difficult to achieve arrangement and shape, etc., to improve the third-order Effects of nonlinear optical coefficients

Inactive Publication Date: 2009-10-07
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current methods of preparing thin film materials, such as ion implantation, sol-gel, magnetron sputtering, pulsed laser deposition (PLD), etc., have almost isotropic distribution and shape of metal nanoclusters, and because of these Metal nanoclusters are randomly distributed and almost spherical in shape, so it is difficult to achieve anisotropy in arrangement and shape, which affects the nonlinear optical effect of the material

Method used

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  • Nonlinear optical material based on metal nanometer cluster array and preparation method thereof
  • Nonlinear optical material based on metal nanometer cluster array and preparation method thereof
  • Nonlinear optical material based on metal nanometer cluster array and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0030] Preparation of ZnO materials containing arrays of gold nanoclusters.

[0031] Polystyrene nanospheres with a uniform diameter of 360 nm were purchased from Duke Scientific Corporation as a latex microsphere suspension, lot number: 26536 (Latex Microsphere Suspension, lot No: 26536). Prepare a colloidal aqueous solution of polystyrene nano-microspheres with a mass fraction of 0.5%, use a pipette to draw 30ul evenly and drop it onto a cleaned cover glass with a size of 18*18mm, and place the cover glass at an angle of 2-5° In a constant temperature and humidity chamber, set the temperature at 30 degrees, saturate the humidity, and evaporate the water to dryness in 4 hours to obtain a colloidal crystal film plate of regularly arranged polystyrene nanospheres on the order of the largest square centimeter, see figure 1 . Put this template into the pulsed laser coating device (PLD) cavity, and at room temperature and 1*10 -3 Under the pressure of Pa, gold is deposited for 1...

Embodiment 2

[0033] Preparation of barium titanate materials containing arrays of copper nanoclusters.

[0034] Polystyrene nanospheres with a uniform diameter of 200 nm were purchased from Duke Scientific Corporation as a latex microsphere suspension, lot number: 26881 (Latex Microsphere Suspension, lot No: 26881). Prepare a colloidal aqueous solution of polystyrene nano-microspheres with a mass fraction of 0.5%, use a pipette gun to draw 30ul evenly and drop-coat it on a cleaned quartz substrate with a size of 10*10mm, and place the quartz substrate at an inclination of 2-5° In a constant temperature and humidity chamber, set the temperature at 30 degrees, saturated humidity, and evaporate the water to dryness in 5 hours to obtain a colloidal crystal film plate of regularly arranged polystyrene nanospheres on the order of the largest square centimeter, see figure 1 . Put this template into the PLD chamber and at room temperature and 1*10 -3Under Pa pressure, copper is deposited for 15 ...

Embodiment 3

[0036] Preparation of polyvinylpyrrolidone (PVP) materials containing arrays of gold nanoclusters.

[0037] A substrate comprising a gold nanocluster array was prepared according to the method in Example 1. The height of the gold array was 50 nm. Weighed 5 g of PVP and dissolved it in 20 ml of water, and evaporated to form a viscous PVP solution. Place the prepared substrate containing the array of gold nanoclusters on a rotary table, adjust the rotation speed to 3000 rpm, use a dropper to draw the PVP solution onto the substrate, so that the gold array is completely covered by PVP, and dry to obtain A PVP material containing an array of gold nanoclusters, the thickness of PVP is 4nm, the volume fraction of gold is 30%, and the third-order nonlinear optical coefficient of the material is 1×10 -5 esu.

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Abstract

The invention provides a nonlinear optical material based on a metal nanometer cluster array, wherein the material includes a substrate, the metal nanometer cluster array on the substrate, and a polymer, an oxide or a metal-doped oxide wrapping the array. The material can be prepared by the following method: at first, the nanometer microspheres of polystyrene are dissolved in water to prepare a colloid water solution of the nanometer microspheres of polystyrene; the colloid water solution is coated on the substrate; the water on the substrate coated with the colloid water solution is removed to obtain orderly-arrayed colloid crystal membrane lamina with the nanometer microsphere of polystyrene; metal is deposited on the colloid crystal membrane lamina with the nanometer microsphere of polystyrene to obtain the colloid crystal membrane lamina with deposited metal; and the crystal membrane lamina of the colloid crystal membrane lamina with deposited metal is removed to obtain the substrate with the metal nanometer cluster array. The material has large three-nature optical coefficient and ratio of optimum value and is especially suitable for practical application.

Description

technical field [0001] The invention relates to a nonlinear optical material based on a metal nano-cluster array and a preparation method thereof, in particular to a third-order nonlinear optical material enhanced based on a metal nano-cluster array and a preparation method thereof. Background technique [0002] Optical materials with large third-order nonlinear coefficient and fast response are the important material basis for realizing optical bistability, optical communication, optical computing, optical phase conjugation, optical modulator and other optoelectronic and all-optical technologies. Traditional nonlinear optical materials such as BaTiO 3 , LiNbO 3 And KDP, etc., its third-order nonlinear coefficients are very small, almost negligible. Exploring and preparing excellent third-order nonlinear materials has been an important frontier topic in recent decades. [0003] Metal nanocluster composite film is a composite material formed by embedding nanometer-sized me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355G02F1/361C23C14/22C23C14/14
Inventor 宁廷银周岳亮陆珩陈聪沈鸿张东香金奎娟杨国桢
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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