A kind of substrate material, Raman surface enhancement substrate, preparation method, application

A technology of base material and surface enhancement, applied in the fields of analyzing materials, Raman scattering, material excitation analysis, etc., can solve the problem of low work efficiency, and achieve the effect of improving work efficiency, simple preparation method and broad market prospect.

Active Publication Date: 2021-06-29
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a substrate material to solve the problem of low work efficiency that requires a lot of preparation in the early stage for the preparation of the existing Raman surface-enhanced substrate proposed in the above-mentioned background technology

Method used

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  • A kind of substrate material, Raman surface enhancement substrate, preparation method, application
  • A kind of substrate material, Raman surface enhancement substrate, preparation method, application
  • A kind of substrate material, Raman surface enhancement substrate, preparation method, application

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A Raman surface enhanced substrate, the specific preparation method is as follows:

[0042] 1) Remove impurities on the surface of the material: cut the cast magnesium ingot into 15×15×4mm 3 The rectangular blocks were anodized. Before the treatment, all the samples were ground with 1200-grit silicon carbide abrasive paper, and then washed with ethanol and deionized water in sequence to remove surface impurities to obtain magnesium rectangular blocks after removal of impurities.

[0043] 2) Pretreatment: The electrolyte in the anodizing process is selected as KOH containing 2g / L and Na 10g / L prepared in deionized water. 3 PO 4 The mixed solution of the magnesium rectangle block and the carbon tube after removing impurities are respectively used as the anode and the cathode in the anodizing process, and the positions of the anode and the cathode are adjusted respectively so that the carbon tube is directly opposite to and parallel to the surface of the magnesium rectangle...

Embodiment 2

[0046] In order to study the influence of surface conditions (such as porosity and roughness) on the strength of SERS (Surface-Enhanced Raman Scattering, surface-enhanced Raman), the anodizing treatment time is taken as the single variable, so the power-on time is 1min, 2min and 5min respectively. Ultimately, the experimental results need to be compared with anodization treatment energization time and gold film thickness as variables to obtain the substrate that can produce the best Raman-enhanced signal.

[0047] In this example, the Raman surface-enhanced substrates prepared with different energization times in Example 1 were subjected to SEM characterization, and the specific SEM characterization results are as follows figure 1 As shown, among them, figure 1 The SEM images of the Raman surface-enhanced substrates prepared for different energization times provided in this example, in figure 1 Among them, picture (a), picture (b) and picture (c) are the SEM images of the Ram...

Embodiment 3

[0049] In order to further observe the geometric parameters of the Raman surface-enhanced substrates prepared with different energization times in Example 1, detailed characterization was carried out by AFM. image 3 AFM images of Raman surface-enhanced substrates prepared for different energization times provided in Examples of the present invention. exist image 3 Among them, picture (a), picture (b), picture (c) and picture (d) are the AFM images of the Raman surface-enhanced substrate when the energization time (that is, the corrosion time) is 1min, 2min, 5min, and 10min, respectively. Figure (e) is a three-dimensional image of the Raman surface-enhanced substrate when the energization time (ie, corrosion time) is 5 minutes. from image 3 It can be seen from the image 3 The radius and depth of the circular hole in (a) are 0.7±0.25 μm and 0.5±0.16 μm, respectively; image 3 The radius and depth of the circular hole in (b) are 0.9 ± 0.3 μm and 6 ± 0.15 μm, respectively;...

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Abstract

The invention relates to the field of micro-nano structure processing, and specifically discloses a substrate material, a Raman surface enhanced substrate, a preparation method, and an application. The substrate material is obtained by anodizing magnesium ingots in an electrolyte, and can be controlled The energization time can then control the geometric parameters of its surface structure, realize high-efficiency processing that can obtain the expected surface structure, and can prepare Raman surface-enhanced substrates with fixed specifications at high efficiency and low cost; and the preparation method provided is simple, only need to select The material is polished and cleaned, the preparation work is significantly reduced, and the work efficiency is improved. The prepared substrate material can be retained for a long time, and can also be prepared as a Raman surface-enhanced substrate, which is used in the detection of surface-enhanced Raman spectroscopy and the detection of different biological reagents Being applied, the preparation of the existing Raman surface enhanced substrate needs to prepare a lot of work in the early stage, and the problem of low work efficiency exists, and has broad market prospects.

Description

technical field [0001] The invention relates to the field of micro-nano structure processing, in particular to a substrate material, a Raman surface enhanced substrate, a preparation method and an application. Background technique [0002] With the continuous improvement of the level of life sciences, the research field has gradually deepened into the field of single molecules, and there is an urgent need for detailed research on pathology, pharmacology, and life activities. Among them, Raman spectroscopy, as an analysis method based on the Raman scattering effect to obtain molecular vibration and rotation information, has been gradually applied in the biological field due to its rapidity and sensitivity. [0003] At present, by combining noble metals (gold, silver, copper, etc.) with other substances, the substrate that can produce Raman-enhanced scattering effect and improve Raman signal is called Raman (surface) enhanced substrate. Nowadays, scholars at home and abroad h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/30G01N21/65
CPCC25D11/30G01N21/658
Inventor 张景然贾天棋张心明石广丰蔡洪彬
Owner CHANGCHUN UNIV OF SCI & TECH
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