Preparation method for Raman enhancement substrate

A substrate and Raman technology, applied in the field of material chemistry technology and detection and analysis, can solve the problems of high cost, poor repeatability of nanoparticle self-assembly length, and difficult preparation, and achieve easy control, good Raman enhancement performance, and simple process. Effect

Inactive Publication Date: 2016-02-03
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current methods have several disadvantages
The self-organization of nanoparticles is poor in repeatability, the cost of RIE and EBL is high, and the preparation is difficult

Method used

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  • Preparation method for Raman enhancement substrate
  • Preparation method for Raman enhancement substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Use magnetron sputtering to prepare a 50nm thick zinc nano film on a glass substrate, configure a mixed solution of 0.01M silver nitrate and 0.005MCTAB, put the prepared nano zinc base into the prepared mixed solution for 60s, take it out, and wash it with alcohol and deionized water 10 times. figure 1 SEM image of the prepared substrate.

Embodiment 2

[0021] Use magnetron sputtering to prepare a 100nm thick zinc nano film on a glass substrate, configure a mixed solution of 0.03M silver nitrate and 0.015MCTAB, put the prepared nano zinc base into the prepared mixed solution for 30s, take it out, and wash it with alcohol and deionized water 10 times.

Embodiment 3

[0023] Use magnetron sputtering to prepare 80nm thick zinc nano film on the glass substrate, prepare a mixed solution of 0.05M silver nitrate and 0.025MCTAB, put the prepared nano zinc base into the prepared mixed solution for 20s, take it out, and wash it with alcohol and deionized water 10 times.

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Abstract

The invention provides a preparation method for a Raman enhancement substrate. By the utilization of magnetron sputtering, a zinc nanometer film of a certain thickness is prepared; a silver nitrate-cetyl trimethyl ammonium bromide (CTAB) mixed solution of a certain concentration is prepared; a prepared zinc nanometer film glass sheet is placed into the mixed solution for certain time and then taken out; the substrate which is taken out is washed several times with alcohol and deionized water until CTAB is completely washed away. The preparation method is simple in technology, easy to control and good in repeatability and has commercial value.

Description

technical field [0001] The invention belongs to the field of material chemistry technology and detection analysis, and relates to a preparation method of a substrate with Raman enhancement effect. Background technique [0002] Raman scattering spectroscopy is a powerful molecular detection technique due to its specificity for molecular and chemical bond vibrational peaks. Due to the very small scattering cross-section of Raman scattering, Raman scattering is a very weak process, which is not conducive to the qualitative analysis of trace substances. Whether the scattering can be enhanced is the key to the practical use of Raman scattering spectroscopy detection technology. In 1974, Fleischman observed that the intensity of the Raman scattering spectrum of molecules attached to the rough metal nanostructure surface could be greatly increased, which was called Surface-enhanced Raman Scattering (SERS). Surface-enhanced Raman scattering (SERS) is a surface-selective enhancemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
Inventor 何丹农尹桂林卢静
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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