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Graphene-metamaterial absorber and application thereof in antibiotic detection

A technology of absorbers and metamaterials, applied in the analysis of materials, material analysis through optical means, instruments, etc., can solve problems affecting the reliability of measurement results, experimental interference, etc., and achieve the effect of fast and non-destructive antibiotic concentration characterization

Active Publication Date: 2020-01-31
SHAOGUAN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above two methods can detect the concentration of antibiotics, because they need to add other reagents during the experiment, it is easy to cause a lot of interference to the experiment, thus affecting the reliability of the measurement results.

Method used

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  • Graphene-metamaterial absorber and application thereof in antibiotic detection
  • Graphene-metamaterial absorber and application thereof in antibiotic detection
  • Graphene-metamaterial absorber and application thereof in antibiotic detection

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Experimental program
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Effect test

Embodiment 1

[0051] Design of a graphene-metamaterial absorber.

[0052] (1) The metamaterial absorber model is established by the electromagnetic simulation software CST, and the model is calculated and simulated by the finite difference time domain method, and the final parameters of the model are determined by optimization.

[0053] The metamaterial absorber structure of this embodiment is as follows image 3 As shown, it consists of several single absorber arrays.

[0054] The single absorber structure of this embodiment is as Figure 4 shown.

[0055] The single absorber is composed of a bottom layer 110, an intermediate medium 120 and a top layer 130, and the material of the bottom layer 110 is aluminum (conductivity 3.45.8×10 -7 S / m), the material of the intermediate medium 120 is high-resistance silicon (dielectric constant is 11.7, conductivity is 2.5×10 -4 S / m), the material of the top layer 130 is gold (conductivity is 4.52×10 -7 S / m). The bottom layer 110 and the intermed...

Embodiment 2

[0064] 5uL of antibiotic solutions of different concentrations were dropped on the surface of the graphene-metamaterial absorber heterostructure that had been fully cleaned with deionized water, and air-dried for 40 minutes at room temperature (placed in an oven, air-flow accelerated drying), every concentration repeated three times.

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Abstract

The invention discloses a graphene-metamaterial absorber comprising graphene and a metamaterial absorber body. The metamaterial absorber has an array structure formed by a plurality of single absorbers. Each single absorber includes a bottom layer, an intermediate medium and a top layer; and the bottom layer is made of aluminum, the intermediate medium is made of high-resistance silicon, and the top layer is made of gold. In addition, the invention also includes application of the graphene-metamaterial absorber in antibiotic detection. According to the invention, bottlenecks of complex samplepretreatment process, long analysis period, high organic solvent consumption, higher requirement on professional ability of operators, inconvenience in popularization and use of at the basic level andthe like in the traditional antibiotic detection method are broken through. With the graphene-metamaterial absorber as a carrier, the rapid and nondestructive antibiotic concentration characterization can be realized.

Description

technical field [0001] The invention relates to the technical field of antibiotic concentration detection, in particular to a graphene-metamaterial absorber and its application in the detection of antibiotics. Background technique [0002] At present, as the most widely used drug, antibiotics have achieved amazing development and become an indispensable development direction of current microbiology. However, due to the continuous increase in the level of antibiotic resistance, the reduction of investment in related drug research and development, and the decreasing number of antibiotic pharmaceutical companies, the diseases caused by bacterial infections cannot be effectively treated, which seriously threatens the health of residents. . [0003] Generally speaking, the concentration of antibiotics is positively correlated with drug efficacy, but too high antibiotic concentration will increase the drug resistance of bacteria, and too low concentration will not achieve the the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3586G01N21/55
CPCG01N21/3586G01N21/55G01N2021/558
Inventor 刘建军丁凡范兰兰
Owner SHAOGUAN COLLEGE
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