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Surface-enhanced Raman substrate based on diamond-like carbon film modified metal nano structure and preparation method thereof

A metal nanostructure and surface-enhanced Raman technology, which is applied in Raman scattering, material excitation analysis, etc., can solve the problem of sacrificing enhancement performance, and achieve the effect of enhancing Raman effect, wide application range, and good permeability

Inactive Publication Date: 2010-06-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because Au has good compatibility with biomolecules and stable chemical properties, the method of synthesizing Ag core@Au shell has also been adopted in the world to solve the above problems. The enhancement effect of the system is improved compared with the pure Au substrate. But the addition of Au will sacrifice part of the enhanced performance

Method used

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  • Surface-enhanced Raman substrate based on diamond-like carbon film modified metal nano structure and preparation method thereof
  • Surface-enhanced Raman substrate based on diamond-like carbon film modified metal nano structure and preparation method thereof
  • Surface-enhanced Raman substrate based on diamond-like carbon film modified metal nano structure and preparation method thereof

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Embodiment 1

[0032] 1. A surface-enhanced Raman substrate based on a diamond-like film modified metal nanostructure, which consists of a metal Ag nanostructure substrate and a tetrahedral amorphous carbon film deposited on the metal Ag nanostructure substrate. The tetrahedral amorphous carbon film has a thickness of 1 nanometer.

Embodiment 2

[0034] 1. A surface-enhanced Raman substrate based on a diamond-like film modified metal nanostructure, which consists of a metal Au nanostructure substrate and a hydrogen-containing tetrahedral amorphous carbon film deposited on the metal Au nanostructure substrate. Derived film composition. The thickness of the derivative film of the hydrogen-containing tetrahedral amorphous carbon film is 2 nanometers.

Embodiment 3

[0036] 1. A surface-enhanced Raman substrate based on a diamond-like film modified metal nanostructure, which consists of a metal Cu nanostructure substrate and a nitrogen-containing tetrahedral amorphous carbon film deposited on the metal Cu nanostructure substrate. Derived film composition. The thickness of the derived film of the nitrogen-containing tetrahedral amorphous carbon film is 2 nanometers.

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Abstract

The invention discloses a surface-enhanced Raman substrate based on a diamond-like carbon film modified metal nano structure and a preparation method thereof. The surface-enhanced Raman substrate consists of a substrate in a metal nano structure and a diamond-like carbon film deposited on the substrate in a metal nano structure. In the invention, when nano metal Ag is used as the substrate material and after the diamond-like carbon film is deposited, the nano material metal Ag can not be oxidized, thereby enhancing the chemical stability of the nano structure substrate which takes Ag as the material, and enhancing the Raman effect of the substrate; the preparation method for the surface-enhanced Raman substrate based on the diamond-like carbon film modified metal nano structure, which is provided by the invention, has mature super-thin ta-C film technology and low cost, thereby being capable of realizing industrialized production.

Description

technical field [0001] The invention designs a nano-film material and a preparation method thereof, in particular to a surface-enhanced Raman substrate based on a diamond-like film-modified metal nanostructure and a preparation method thereof. Background technique [0002] Surface-enhanced Raman spectroscopy (SERS) technology has a wide range of applications in physics, chemistry, materials science, biomedicine and other fields. The principle of its enhancement is based on the enhancement of the electric field on the metal surface based on plasmon resonance; compared with other measurement methods, Raman detection has molecular recognition and fingerprint properties, and is insensitive to aqueous solutions, especially useful for the detection of biomolecules. However, the disadvantage of Raman spectroscopy is that the signal is very weak, and the use of surface-enhanced Raman technology has made a new breakthrough in solving this problem. [0003] For surface-enhanced Raman...

Claims

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Application Information

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IPC IPC(8): G01N21/65
Inventor 刘凡新王振林
Owner NANJING UNIV
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