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Silver-germanium-copper composite structural component and preparation method and use thereof

A composite structure and device technology, applied in the field of silver-germanium-copper composite structure devices and their preparation, can solve the problems of less species, energy loss of excitation light and outgoing signal, etc., and achieve convenient real-time monitoring, improved sensitivity, and high SERS activity. Effect

Active Publication Date: 2015-09-09
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this SERS substrate can detect biomolecules, it also has shortcomings. First, the excitation light must pass through the solution to be tested to act on the substrate at the bottom during detection, which will cause the excitation light and the outgoing signal. Energy loss; secondly, there are few detectable species

Method used

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  • Silver-germanium-copper composite structural component and preparation method and use thereof
  • Silver-germanium-copper composite structural component and preparation method and use thereof
  • Silver-germanium-copper composite structural component and preparation method and use thereof

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Effect test

Embodiment 1

[0036] The concrete steps of preparation are:

[0037] Step 1: Firstly, the copper mesh with a mesh diameter of 35 μm is ultrasonically cleaned with ethanol and deionized water, and then placed in a sputtering apparatus at a place 1.5 cm from the gold target, and sputtered at a sputtering current of 25 mA for 1.5 min. A copper mesh with gold nanoparticles vapor-deposited on its surface and mesh walls was obtained. Then place the copper mesh with gold nanoparticles vapor-deposited on its surface and mesh walls in a mixed atmosphere of germane and argon, and keep it warm at 310°C for 35min, wherein the mixed atmosphere of germane and argon has a flow rate of 3.5mL / min of germane and 60mL / min of argon mixed gas, to obtain approximately figure 1 b~ figure 1 A copper mesh with germanium nanowires is constructed on the surface and mesh walls shown in d.

[0038] Step 2, place the copper mesh with germanium nanowires on its surface and mesh walls at 1.5 cm from the silver target ...

Embodiment 2

[0040] The concrete steps of preparation are:

[0041] Step 1: First, after ultrasonically cleaning the copper mesh with a mesh diameter of 38 μm with ethanol and deionized water, place it at the gold target 1.8 cm in the sputtering apparatus, and sputter at a sputtering current of 23 mA for 1.8 min. A copper mesh with gold nanoparticles vapor-deposited on its surface and mesh walls was obtained. Then place the copper mesh with gold nanoparticles vapor-deposited on its surface and mesh walls in a mixed atmosphere of germane and argon, and keep it warm at 320°C for 34min, wherein the mixed atmosphere of germane and argon has a flow rate of 3.8mL / min of germane and 60mL / min of argon mixed gas, to obtain approximately figure 1 b~ figure 1 A copper mesh with germanium nanowires is constructed on the surface and mesh walls shown in d.

[0042] Step 2, place the copper mesh with germanium nanowires on its surface and mesh walls at the silver target 1.8cm in the sputtering appara...

Embodiment 3

[0044] The concrete steps of preparation are:

[0045] Step 1: First, after ultrasonically cleaning the copper mesh with a mesh diameter of 40 μm with ethanol and deionized water, place it at a place 2 cm away from the gold target in the sputtering apparatus, and sputter at a sputtering current of 20 mA for 2 minutes to obtain its Copper mesh with gold nanoparticles evaporated on the surface and the mesh walls. Then place the copper mesh with gold nanoparticles vapor-deposited on its surface and mesh walls in a mixed atmosphere of germane and argon, and keep it warm at 330°C for 33 minutes, wherein the mixed atmosphere of germane and argon has a flow rate of 4mL / min The mixed gas of germane and 60mL / min argon can be obtained as figure 1 b~ figure 1 A copper mesh with germanium nanowires is constructed on the surface and mesh walls shown in d.

[0046] Step 2, place the copper mesh with germanium nanowires on its surface and mesh walls at the silver target 2cm in the sputter...

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Abstract

The invention discloses a silver-germanium-copper composite structural component and a preparation method and use thereof. The silver-germanium-copper composite structural component is prepared by constructing of germanium nanowires modified with silver nanoparticles on the surface and the mesh wall of a copper mesh, the mesh diameter of the copper mesh is 35-45 mum, the germanium nanowire line diameter is 100-150 nm, the line length is 5-15 mum, the silver nanoparticle grain diameter is 15-35 nm; and the method is as follows: the copper mesh is put at a position 1.5-2.5 cm from a gold target of a sputtering device for sputtering in the sputtering current of 15-25 mA for 1.5-2.5 min to obtain the copper mesh on which the surface and the mesh wall are evaporated with gold nanoparticles, then the germanium nanowires are grown on the copper mesh by chemical gas phase method to obtain the copper mesh on which the surface and the mesh wall are constructed with the germanium nanowires, and the sputtering device is used for sputtering the silver nanoparticles on the copper mesh on which the surface and the mesh wall are constructed with the germanium nanowires to obtain an objective product. The silver-germanium-copper composite structural component can be used as surface enhanced Raman scattering active base, and can be widely used for measuring the content of rhodamine 6G, or methyl parathion-methyl, or adenine, or 6-aminopenicillanicacid or alkanes acid or penicillin G sodium salt attached on the silver-germanium-copper composite structural component.

Description

technical field [0001] The invention relates to a composite structure device and its preparation method and application, in particular to a silver-germanium-copper composite structure device and its preparation method and application. Background technique [0002] Among the existing surface-enhanced Raman scattering (SERS) substrate materials, noble metal materials such as Au, Ag, and Cu can achieve better Raman enhancement effects through physical enhancement, so noble metal substrates are most widely used. At the same time, although the semiconductor materials Si, ZnO, TiO 2 , NiO, etc. can provide limited enhancement effects through chemical enhancement, but because of their low cost, good biological and chemical affinity, and easy to generate complex nanostructures with high SERS activity on them, they are often used as Skeleton, together with noble metal materials to prepare a composite SERS substrate with both noble metal physical enhancement and semiconductor activit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65C23C14/16C23C16/18C30B25/18C30B29/62C30B29/08C23C14/34B82Y30/00B82Y40/00
Inventor 周琪涛孟国文刘菁柯岩
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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