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Method for preparing substrate glass slide with effect of surface enhanced Raman scattering

A technology of surface enhancement and Raman spectroscopy, applied in Raman scattering, gaseous chemical plating, metal material coating technology, etc., to achieve the effect of convenient use and easy commercialization

Inactive Publication Date: 2011-04-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, surface-enhanced Raman scattering has significant limitations - only a few metals (gold, silver, copper) can produce such a strong surface-enhanced Raman scattering effect, and the substrates of these metals must be rough or require preparation into nanoparticles

Method used

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  • Method for preparing substrate glass slide with effect of surface enhanced Raman scattering
  • Method for preparing substrate glass slide with effect of surface enhanced Raman scattering
  • Method for preparing substrate glass slide with effect of surface enhanced Raman scattering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Preparation of the metal oxide coating: use the atomic layer deposition system of the Finnish picosun company to deposit zinc oxide on the glass slide using the precursor dimethyl zinc, and the thickness of the zinc oxide coating is 400nm;

[0017] 2) Slight corrosion of the coating: lightly corrode the coated glass slide with a concentration of 0.005% hydrochloric acid, soak for 2 minutes;

[0018] 3) Cleaning: first neutralize the residual hydrochloric acid on the corroded slide glass with 0.005% sodium hydroxide, and then wash it 10 times with deionized water to prepare a Raman spectroscopic surface-enhanced base slide glass.

[0019] Glycine was prepared into a solution with a saturated concentration, and a few drops were placed on the corroded and cleaned glass slide, and the slide was placed under a microscope for observation to obtain a Raman spectrum.

Embodiment 2

[0021] 1) Preparation of the metal oxide coating: use the atomic layer deposition system of the Finnish picosun company to deposit zinc oxide on the glass slide using the precursor dimethyl zinc, and the thickness of the zinc oxide coating is 500nm;

[0022] 2) Mild corrosion of the coating: mildly corroding the coated glass slide with 0.001% nitric acid and soaking for 2 minutes.

[0023] 3) Cleaning: first neutralize residual hydrochloric acid on the corroded glass slide with 0.001% potassium hydroxide, and then wash with deionized water for 10 times to prepare a Raman spectrum surface enhanced base slide.

Embodiment 3

[0025] 1) Preparation of metal oxide coating: use atomic deposition technology, use the atomic layer deposition system of Finland picosun company, use the precursor dimethyl zinc to deposit zinc oxide on the glass slide, the thickness of the zinc oxide coating is 400nm;

[0026] 2) Mild corrosion of the coating: lightly corrode the coated glass slide with a concentration of 10% phosphoric acid, soak for 2 minutes;

[0027] 3) Cleaning: first neutralize residual hydrochloric acid on the corroded glass slide with 30% ammonia water, and then wash with deionized water for 10 times to prepare a Raman spectrum surface-enhanced base slide.

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Abstract

The invention provides a substrate glass slide with the effect of surface enhanced Raman scattering and a preparation method thereof. The prepared metal oxide film substrate glass slide can be stored for a long time, is convenient to use and easy to commercialize, has obvious effect on surface enhanced Raman signal, can better remove fluorescent effect and especially has obvious effect on Raman measurement of organics.

Description

technical field [0001] The invention relates to a preparation method of a base slide, in particular to a preparation method of a Raman spectrum surface-enhanced base slide. Background technique [0002] In recent years, with the improvement of laser and detector technology, and Raman can directly measure gases, liquids and solids, and the test is fast, Raman spectroscopy technology has been gradually applied to daily detection, and has been deeply used in archaeology, petrochemical, In dyes, biology, materials and other fields. However, in the testing of organic compounds, the fluorescence effect often occurs, and the Raman signal is covered up. The generation of existing lasers can effectively eliminate the fluorescence effect of some organic compounds to a certain extent. Irradiation can also improve the Raman signal to a certain extent, but there are still many organic compounds that have fluorescence effects and large packets, and long-term and high-intensity laser irra...

Claims

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Application Information

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IPC IPC(8): C23C16/40C23C16/56G01N21/65
Inventor 黄碧兰周莹张冰毛启明罗超
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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