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Metal nanoparticle structure array and preparation method thereof

A technology of metal nanoparticles and arrays, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of difficulty in realizing nanogap control, low preparation efficiency, and high equipment requirements, and achieve low cost, good compatibility, and adaptability broad effect

Active Publication Date: 2017-02-01
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The existing process has high equipment requirements, high cost, complex process, and low production efficiency; and is limited by the lithography resolution and the size of the nanospheres, it is difficult to control the nanogap

Method used

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  • Metal nanoparticle structure array and preparation method thereof
  • Metal nanoparticle structure array and preparation method thereof
  • Metal nanoparticle structure array and preparation method thereof

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Embodiment 1

[0047] A metal nanoparticle structure array of the present invention, specifically a gold nanoparticle structure array, comprising a two-layer two-dimensional gold nanoparticle structure array and a layer of aluminum oxide film, and the aluminum oxide film is located between the two-layer two-dimensional gold nanoparticle structure array between. The two-dimensional gold nanoparticle structure array is a two-dimensional hexagonal array structure composed of gold nanoparticles periodically arranged, and the gold nanoparticles in the second layer two-dimensional gold nanoparticle structure array are located in the first layer two-dimensional gold nanoparticle structure array in the depressions formed between adjacent gold nanoparticles. The diameter of the gold nanoparticles in the first layer of the two-dimensional gold nanoparticle structure array is 200nm, and the diameter of the gold nanoparticles in the second layer of the two-dimensional gold nanoparticle structure array i...

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Abstract

The invention discloses a metal nanoparticle structure array and a preparation method thereof. The preparation method comprises the following steps: (1) preparing an ordered polystyrene nano spherical dense arrangement; (2) depositing a metal film; and (3) preparing a single-layer ordered metal nanoparticle structure array. The invention further discloses a method for preparing a double-layer or a multi-layer ordered metal nanoparticle structure array. An alumina film is arranged between every two adjacent layers of the ordered metal nanoparticle structure array of the metal nanoparticle structure array disclosed by the invention. The preparation method disclosed by the invention is simple in process, economical and efficient, controllable in nano size gaps and good in repeatability, and the metal nanoparticle structure array has the advantages of being large in area, high in density, controllable in nano size gaps, and the like.

Description

technical field [0001] The invention belongs to the field of metal nanostructures, and in particular relates to a metal nanoparticle structure array and a preparation method thereof. Background technique [0002] Surface-enhanced Raman spectroscopy (SERS) is an emerging biomolecular detection technology, which has high detection sensitivity, can achieve single-molecular-weight detection, and can provide rich molecular structure information. The key to developing SERS into an analytical technique with practical application significance is to prepare SERS active substrates with high sensitivity, high stability, good reproducibility and high selectivity. In recent years, periodic metal nanostructure arrays (especially noble metal nanostructure arrays, such as gold, silver, platinum, copper, etc.) have attracted extensive attention due to their great enhancement effect on SERS. [0003] The size of the nanogap of metal nanostructures directly affects the sensitivity and other p...

Claims

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Application Information

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IPC IPC(8): B82B3/00B82B1/00B82Y30/00B82Y40/00
Inventor 吴学忠董培涛孟选辉王朝光陈剑曾学盛
Owner NAT UNIV OF DEFENSE TECH
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