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CN-116328872-A - Micro-filling rotating arm for automatic preparation of SERS substrate

CN116328872ACN 116328872 ACN116328872 ACN 116328872ACN-116328872-A

Abstract

The invention belongs to the technical field of Raman spectroscopy, and discloses a micro-filling rotating arm for automatic preparation of a SERS substrate. The micro-filling needle head can be guaranteed to be always kept above the reaction kettle in the rotating process of the rotating arm, the micro-filling hose can be reasonably fixed and limited without knotting or blocking, and enough rigidity is provided to avoid shaking of the rotating arm in the rotating process. The stability of reagent micro-filling in the self-assembly method of the SERS substrate can be improved, so that the uniformity and the repeatability of the SERS substrate are improved.

Inventors

  • LUO ZONGCHANG
  • YU MIN
  • HU MENGZHU
  • HAN FANGYUAN
  • ZHANG LONGFEI
  • TANG BIN

Assignees

  • ELECTRIC POWER RES INST GUANGXI POWER GRID CO LTD

Dates

Publication Date
20230627
Application Date
20230220
Priority Date
20230220

Claims (8)

  1. 1. The utility model provides a SERS substrate automatic preparation is with micro-filling swinging boom which characterized in that includes: the rotating arm base (1) is used for being connected with a servo rotating steering engine (300) fixed on the SERS substrate preparation reaction kettle (200); the rotary arm cylinder body (2) is arranged on the rotary arm base (1), and the rotary arm cylinder body (1) is of a hollow structure; the hose limit bracket (3) is fixed at the top end of the rotating arm cylinder (2) and is used for supporting the hose (500) and preventing the hose (500) from knotting; the hose limiting structure (4) is fixed at the top end of the hose limiting bracket (3), and the hose limiting structure (4) is of an annular structure; the rotary support arm (5) is a cantilever mechanism, one end of the rotary support arm (5) is connected with the rotary arm cylinder body (2), and the other end of the rotary support arm is used for fixing the filling needle head (400).
  2. 2. A microscale filling rotating arm for automatic SERS substrate preparation according to claim 1, wherein the rotating support arm (5) comprises: the rotary arm support structure (51), one end of the rotary arm support structure (51) is fixedly connected with the side wall of the rotary arm cylinder body (2); a needle fixing structure (52), wherein the needle fixing structure (52) is arranged at the other end of the rotary arm supporting structure (51); and the reinforcing group plate (53) is arranged outside the rotating arm supporting structure (51) and is used for reinforcing the rotating arm supporting structure (51).
  3. 3. The micro-filling rotating arm for automatic SERS substrate preparation according to claim 1, wherein the rotating arm base (1) has a circular structure and is fixedly connected with a steering engine rotating disc (6) on the servo rotating steering engine (300).
  4. 4. The micro-filling rotating arm for automatic SERS substrate preparation according to claim 1, wherein the hose limit bracket (3) is an arc-shaped sheet body or a cylindrical shape, and a notch is formed on the side wall of the hose limit bracket (3).
  5. 5. A micro-filling rotating arm for automatic SERS substrate preparation according to claim 2, wherein a plurality of said needle fixing structures (52) are provided at the end of said rotating support arm (5).
  6. 6. The micro-filling rotating arm for automatic SERS substrate preparation according to claim 1, wherein four bolt connection holes are formed in the rotating arm base (1) and distributed at 90 degrees.
  7. 7. The micro-filling rotating arm for automatic preparation of SERS substrates according to claim 1, wherein the rotating arm cylinder body (2) is of a cylindrical hollow structure, and has an outer diameter of 12mm, an inner diameter of 10mm and a height of 36mm.
  8. 8. The micro-filling rotating arm for automatic SERS substrate preparation according to claim 1, wherein the hose limit structure (4) is designed as a circular ring structure with an outer diameter of 12mm, an inner diameter of 10mm and a height of 4mm.

Description

Micro-filling rotating arm for automatic preparation of SERS substrate Technical Field The invention belongs to the technical field of Raman spectroscopy, and particularly relates to a micro-filling rotating arm for automatic preparation of a SERS substrate. Background The Surface Enhanced Raman Scattering (SERS) effect is a Raman scattering effect under special conditions, can amplify the Raman signal of molecules by several or even more than ten orders of magnitude, effectively solves the problem of low sensitivity of Raman spectrum in surface science and trace analysis, has the advantages of rapidness, accuracy, high sensitivity, no damage, fingerprint characteristics and the like, and is widely applied to analysis and detection work in the fields of food safety, pesticide residue detection, explosive detection and the like. Studies have shown that the performance of SERS substrates is critical to the enhancement effect of SERS detection. The preparation of solid phase SERS substrates with small nanogaps, high sensitivity and repeatability has advanced significantly in recent years, e.g., electron beam lithography, nanoimprinting, nanosphere lithography, etc. have been designed to produce highly uniform and reproducible SERS substrates, but such methods are complex to operate and costly. In the low-cost method, the self-assembly method is widely applied because of simple preparation steps, and the solid-phase SERS substrate with high density, small nano gaps and high sensitivity can be prepared through optimization of various parameters. However, the self-assembly method is a wet chemical method based on chemical reaction in solution, the type and amount of the added chemical reagent are often required to be finely regulated and controlled, the automation degree of preparing the SERS substrate by the self-assembly method is low, the micro-filling of different types of chemical reagents is finished by means of a manually operated micro-pipette gun, the specificity is strong, the repeated operation is more, the influence of the operation quality on the performance of the SERS substrate is large, and the uniformity and the repeatability are difficult to ensure especially in the preparation of different batches and the operation of different personnel. The foregoing background is only for the purpose of providing an understanding of the inventive concepts and technical aspects of the present invention and is not necessarily prior art to the present application and is not intended to be used to evaluate the novelty and creativity of the present application in the event that no clear evidence indicates that such is already disclosed at the filing date of the present application. Disclosure of Invention The invention aims at: aiming at the defects of the prior art, the invention provides the micro-filling rotating arm for automatically preparing the SERS substrate, which is convenient to connect with the SERS substrate preparation instrument and is used for ensuring that a micro-filling needle is kept at an accurate position and fixing and limiting a micro-filling hose. In order to achieve the above purpose, the invention adopts the following technical scheme: a micro-fill rotating arm for automatic SERS substrate preparation, comprising: the rotating arm base is used for being connected with a servo rotating steering engine fixed on the SERS substrate preparation reaction kettle; the rotating arm cylinder body is arranged on the rotating arm base and is of a hollow structure; the hose limiting bracket is fixed at the top end of the rotating arm cylinder body and is used for supporting the hose and preventing the hose from knotting; the hose limiting structure is fixed at the top end of the hose limiting bracket and is of an annular structure; the rotary support arm is a cantilever mechanism, one end of the rotary support arm is connected with the rotary arm cylinder body, and the other end of the rotary support arm is used for fixing the filling needle head. Preferably, the rotary support arm includes: the rotating arm supporting structure is characterized in that one end of the rotating arm supporting structure is fixedly connected with the side wall of the rotating arm cylinder body; the needle fixing structure is arranged at the other end of the rotary arm supporting structure; the reinforcing cluster plate is arranged on the outer side of the rotating arm supporting structure and used for reinforcing the rotating arm supporting structure. Preferably, the rotating arm base is of a circular structure and is used for being fixedly connected with the rotating disc on the servo rotating steering engine. Preferably, the hose limit bracket is an arc-shaped sheet body or a cylinder, and a notch is formed in the side wall of the hose limit bracket. Preferably, the end of the rotary supporting arm is provided with a plurality of needle fixing structures. Preferably, four bolt connection holes are formed in the rotat