Surface enhanced raman scattering substrate and preparation method thereof

A surface-enhanced Raman and substrate technology, applied in the field of spectral detection, can solve the problems of high processing cost, poor controllability and poor assembly controllability, and achieve the effect of reducing the area, reducing the difficulty of the process, and broad application prospects
CN108956579AInactive Publication Date: 2018-12-07NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2018-12-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a surface enhanced raman scattering substrate and a preparation method thereof. The preparation method comprises the following steps: preparing metal magnetic balls, each of which comprises a magnetic ball core and a noble metal shell layer coated on the outer surface of the magnetic ball core; preparing a plurality of limited range pits distributed in array on a preparation zone of a substrate main body; adding a magnetic field to the exterior of the substrate main body, repeatedly vibrating the magnetic field, thereby driving the metal magnetic balls on the surface ofthe substrate main body with the limited range pits to enter into the limited range pits and forming at least one metal magnetic ball layer along the depth direction of the limited range pits, wherein each metal magnetic ball layer is composed of a plurality of metal magnetic balls uniformly and closely arrayed in the limited range pits, and the metal magnetic balls of each metal magnetic ball layer are arrayed in a crystal-oriented form and in a hexagonal structure. The scheme is capable of solving the problems of high cost, complex process or low controllability of the prior art, reducing the processing cost of the surface enhanced raman scattering substrate and increasing the controllability of substrate hotspot forming and the controllability of an assembling process.
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Description

technical field

[0001] The invention relates to the technical field of spectrum detection, in particular to a surface-enhanced Raman scattering substrate and a preparation method thereof. Background technique

[0002] Surface-enhanced Raman scattering (hereinafter referred to as SERS) technology is an emerging spectral detection technology, which has great potential application prospects in the field of high-sensitivity on-site real-time biochemical detection.

[0003] According to the morphological characteristics and preparation methods of the substrates, the existing SERS substrates can be divided into three categories. The first category is metal nanostructure substrates fabricated by micronano processing, the second category is metal nanoparticle sol substrates, and the third category is metal nanoparticle assembly. base.

[0004] The commonly used processing methods for the first type of metal nanostructure substrates include focused ion beam etching, electron beam li...

Claims

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