Preparation method of flexible surface enhanced Raman spectrum substrate and application thereof

A Raman spectrum substrate and flexible surface technology, applied in the direction of Raman scattering, material analysis through optical means, measurement devices, etc., can solve the problems of high cost, inability to detect in situ, and difficulty in preparing extremely small structures. consistent effect

Active Publication Date: 2016-03-23
SHENZHEN TOPMEMBRANES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of the current semiconductor processing technology, which are difficult to prepare extremely small structures, high cost, complicated operation of the hard substrate, and unable to be detected in situ, and provide a flexible semiconductor with high enhancement factor and low cost. Preparation method of surface-enhanced Raman substrate

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  • Preparation method of flexible surface enhanced Raman spectrum substrate and application thereof
  • Preparation method of flexible surface enhanced Raman spectrum substrate and application thereof
  • Preparation method of flexible surface enhanced Raman spectrum substrate and application thereof

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[0028] The general steps of the preparation method of the flexible surface-enhanced Raman spectroscopy substrate of the present invention are as follows: first, a layer of low surface energy material is coated on the surface of the anodized aluminum template, and then the active metal material layer and the metal adhesion layer are directly deposited, and then A flexible organic material support layer is prepared on the surface of the coating, and finally the organic material support layer with the active metal layer is separated from the surface of the anodized aluminum template to obtain a flexible surface-enhanced Raman spectrum substrate.

[0029] The schematic flow chart of the preparation method of the flexible surface-enhanced Raman spectrum substrate of the present invention is as attached figure 1 shown.

Embodiment 1

[0032] The steps of regulating the size of aluminum nanoparticles in this embodiment are as follows:

[0033] S1. A two-step anodic oxidation method is used to prepare a single-pass porous alumina template. The pore diameter, pore spacing and template thickness are 30nm, 100nm and 2000nm respectively; the surface of the anodized alumina template is coated with a layer of low surface energy material Alkylsilane.

[0034] S2. Deposit a layer of gold on the surface of the anodized aluminum template coated with low surface energy materials by electron beam evaporation, the deposition rate is 0.05nm / s, and the deposition thickness is 20nm.

[0035] S3. Evaporate a layer of chromium on the metal surface by electron beam evaporation, the deposition rate is 0.03nm / s, and the deposition thickness is 5nm.

[0036] S4. Prepare a layer of polydimethylsiloxane on the surface of the metal adhesion layer, and the thickness of the cured polydimethylsiloxane is 2 mm.

[0037]S5. After the or...

Embodiment 2

[0039] In this embodiment, the steps for preparing a flexible Raman-enhanced substrate are as follows:

[0040] S1. A two-step anodic oxidation method is used to prepare a single-pass porous alumina template. The pore diameter, pore spacing and template thickness are 30nm, 100nm and 2000nm respectively; the surface of the anodized alumina template is coated with a layer of low surface energy material Alkylsilanes.

[0041] S2. Deposit a layer of gold on the surface of the anodized aluminum template coated with low surface energy materials by electron beam evaporation, the deposition rate is 0.05nm / s, and the deposition thickness is 20nm.

[0042] S3. Prepare a polydimethylsiloxane film with a thickness of 1 mm.

[0043] S4. Coating a layer of self-assembled monolayer film based on mercapto group on the polydimethylsiloxane film to strengthen the adsorption force between the surface and gold. The anodized aluminum and the film are pressed together with a certain pressure for ...

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Abstract

The invention discloses a preparation method of a flexible surface enhanced Raman spectrum substrate and application thereof. The method comprises the steps that the surface of an anodic aluminum oxide template is coated with a layer of anti-adsorption material, an active metal material layer is deposited, a supporting layer is formed through in-situ solidification or by adhering a layer of organic material, the supporting layer is removed from the surface of the anodic aluminum oxide template, and the active metal material layer with a structure is obtained to serve as the surface enhanced Raman substrate. In addition, in order to achieve successful transfer, a material layer capable of enhancing adsorption can be additionally arranged on the active metal material layer or the organic material layer, and the integrity of the structure transfer is guaranteed. The prepared flexible surface enhanced Raman spectrum substrate with a porous structure is good in uniformity and high in repetitive rate, the structure is easy to control, the template can be reused, and the method is low in cost and suitable for large-scale industrial application.

Description

Technical field [0001] The present invention belongs to the field of nanomaterial preparation.More specifically, it involves a flexible surface Raman enhanced spectrum foundation and its application. Background technique [0002] The surface enhancement Raman spectrum technology can provide the molecular fingerprint information of the single molecular level to be tested, which has the advantages of high sensitivity and high accuracy. Therefore, this technology isTesting and other fields have huge application value.However, there are very few applications of Raman spectrometry technology in actual life at present. One of the important reasons is that the lack of good surface enhancement of Raman spectrum bases lacks good comprehensive performance. In addition to high surface enhancement factors, this base isIt should also have the characteristics of uniformity and repetitiveness, convenient use, and low cost.High surface enhancement factor requires the base surface to generate a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 赵呈春郭秋泉杨军
Owner SHENZHEN TOPMEMBRANES INC
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