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Super-hydrophobic automatic positioning SERS spectrum detection platform as well as preparation method and application thereof

A spectrum detection and automatic positioning technology, applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of failure to achieve mass production and convenient use, high cost, complex process, etc., and achieve easy surface enhancement. The effect of high-throughput detection, low cost and high detection sensitivity of Raman spectroscopy

Pending Publication Date: 2021-07-20
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the detection sensitivity of superhydrophobic substrates is extremely high at present, there are problems such as complicated process and high cost, and it has not achieved mass production and convenient use.

Method used

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  • Super-hydrophobic automatic positioning SERS spectrum detection platform as well as preparation method and application thereof
  • Super-hydrophobic automatic positioning SERS spectrum detection platform as well as preparation method and application thereof
  • Super-hydrophobic automatic positioning SERS spectrum detection platform as well as preparation method and application thereof

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preparation example Construction

[0032] The invention provides a method for preparing a superhydrophobic automatic positioning SERS spectrum detection platform, comprising the following steps:

[0033] Arranging arc-shaped grooves on the surface of the substrate;

[0034] performing etching after removing the oxide layer on the surface of the arc-shaped groove to form a micro-nano structured surface;

[0035] Fluorosilane is vapor-deposited on the surface of the micro-nano structure to obtain a super-hydrophobic automatic positioning SERS spectrum detection platform.

[0036] In the present invention, arc-shaped grooves are arranged on the surface of the substrate. In the present invention, the substrate is preferably an aluminum plate. The present invention has no special requirements on the size of the aluminum plate, which can be selected according to actual needs. In a specific embodiment of the present invention, the thickness of the aluminum plate is preferably 2-15mm, more preferably 8mm; the length...

Embodiment 1

[0065] Place an aluminum plate with a length × width × height of 171mm × 171mm × 8mm on a digital control machine tool with set parameters to drill grooves, a total of 100 arc-shaped grooves, the opening diameter of each arc-shaped groove is 8mm, and the depth 1.5mm, the shape is semi-arc, and the center distance between two adjacent arc-shaped grooves is 16mm;

[0066]Use 1200# sandpaper to polish each arc-shaped groove on the aluminum plate for 10 seconds, then use ultrapure water, acetone, and absolute ethanol to ultrasonically clean it for 10 minutes each; add 70 μL of 3mol / L HCl solution, etched for 3 hours, then ultrasonically cleaned with ultrapure water and absolute ethanol for 10 minutes, and dried at room temperature (25°C); then the etched aluminum plate was mixed with 0.5 mL of trimethoxyl ( 1H, 1H, 2H, 2H-heptadecafluorodecyl) silane were placed together in a closed stainless steel box, and then the box was placed in a blast drying oven, evaporated at 120°C for 12...

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Abstract

The invention provides a super-hydrophobic automatic positioning SERS a preparation method and application thereof, and relates to the technical field of Raman spectrum detection. The invention provides a preparation method of a super-hydrophobic automatic positioning SERS spectrum detection platform. The preparation method comprises the following steps: forming an arc-shaped groove in the surface of a substrate; etching after removing the oxide layer on the surface of the arc-shaped groove to form a micro-nano structure surface; and evaporating fluorosilane on the surface of the micro-nano structure to obtain the super-hydrophobic automatic positioning SERS spectrum detection platform. The super-hydrophobic automatic positioning SERS spectrum detection platform provided by the invention is simple and convenient in preparation process, low in cost and convenient for actual use; the detection platform provided by the invention is combined with the surface enhanced Raman spectroscopy to detect the trace analyte, so that the coffee ring effect can be effectively avoided, the detection sensitivity is relatively high, and the stability and uniformity are relatively good.

Description

technical field [0001] The invention relates to the technical field of Raman spectrum detection, in particular to a superhydrophobic automatic positioning SERS spectrum detection platform and a preparation method and application thereof. Background technique [0002] Laser Raman spectroscopy technology can provide molecular fine structure information and characteristic "molecular fingerprint" maps, so that Raman spectroscopy can identify different molecules, and is widely used in the analysis and detection of biochemical molecules, such as rhodamine, glucose, amino acids, proteins, Qualitative and quantitative analysis of substances such as nucleic acids and lipids. Surface-enhanced Raman spectroscopy (SERS for short) is to enhance the Raman signal of the detection target with the help of noble metal nanoparticles (such as gold colloid or silver colloid), effectively suppressing the autofluorescence signal, and the Raman signal intensity can be enhanced by 10 4 ~10 14 Time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N21/01
CPCG01N21/658G01N21/01
Inventor 冯尚源林学亮林多卢玉栋
Owner FUJIAN NORMAL UNIV
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