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A graphene-metamaterial absorber and its application in the detection of antibiotics

An absorber and metamaterial technology, which is applied in the analysis of materials, material analysis by optical means, instruments, etc., can solve the problems affecting the reliability of measurement results, experimental interference, etc., and achieve the effect of rapid and non-destructive characterization of antibiotic concentration.

Active Publication Date: 2020-09-08
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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  • A graphene-metamaterial absorber and its application in the detection of antibiotics
  • A graphene-metamaterial absorber and its application in the detection of antibiotics
  • A graphene-metamaterial absorber and its application in the detection of antibiotics

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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, which is composed of graphene and a metamaterial absorber. The metamaterial absorber is composed of several single absorbers to form an array structure; each single absorber is composed of a bottom layer, a middle medium and a top layer three-layer structure, and the bottom layer material is aluminum, the middle medium material is high-resistance silicon, and the top layer material is gold. The present invention also includes the application of the graphene-metamaterial absorber in the detection of antibiotics. The invention can break through the bottlenecks of the traditional antibiotic detection method, such as complicated sample pretreatment process, long analysis period, large consumption of organic solvents, high requirements on the professional ability of operators, and inconvenient popularization and use at the grassroots level. Using a graphene-metamaterial absorber as a support enables rapid and non-destructive characterization of antibiotic concentrations.

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 Patents(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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