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Apparatus and method for measuring the change law of dielectric constant of graphene-based solution by microwave

A dielectric constant and microwave measurement technology, applied in the direction of measuring devices, material capacitance, material analysis through electromagnetic means, etc., can solve the problems of single test content, complexity, single equipment, etc.

Active Publication Date: 2020-10-30
SHENYANG NORMAL UNIV
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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a device and method capable of measuring the dielectric constant of graphene-based solutions at different temperatures and different concentrations, so as to solve and make up for the dielectric constant of graphene-based solutions in the 8GHz-12GHz frequency range of existing microwave measuring devices. There are rare reports on the research on the change of electric constant with temperature and concentration. At present, there are defects such as single test content and single and complicated equipment in the microwave measurement of solid and liquid dielectric constant. Measurement and Application

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  • Apparatus and method for measuring the change law of dielectric constant of graphene-based solution by microwave
  • Apparatus and method for measuring the change law of dielectric constant of graphene-based solution by microwave
  • Apparatus and method for measuring the change law of dielectric constant of graphene-based solution by microwave

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Embodiment 1

[0050] like figure 1 , a microwave method for measuring the variation law of the dielectric constant of graphene oxide solution, the microwave emitted by the Gunn diode microwave source 1 passes through the isolator 2, the attenuator 3, the wavelength meter 4, the 3cm waveguide transmission line 5, and the straight waveguide successively in the horizontal direction 6 reaches the first port a of the circulator 7, is transmitted to the rectangular resonant cavity 8 through the second port b, and after reflection, enters the oscilloscope 9 through the third port c, and the oscilloscope shows as image 3 As shown in the reflection resonance curve, record f 0 , f 1 and f 2 value;

[0051] The capillary glass tube 10 is equipped with a 5 g / ml graphene oxide solution 11, and the capillary glass tube 10 is attached with a rectangular heating plate 12, and a temperature sensor 13 is attached below the heating plate 12, and the upper end of the capillary glass tube 10 is fixedly conn...

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Abstract

The invention discloses a device and method for measuring the change law of the dielectric constant of a graphene solution by microwaves. A microwave source, an isolator, an attenuator, a wavelength meter, a waveguide transmission line, a straight waveguide, a circulator, a resonant cavity and an oscilloscope are arranged. Based on such devices, combined with intelligently controlled heating and display systems, as well as capillary glass tubes and lifting devices, the measurement of the dielectric constant of graphene solutions with different concentrations, temperatures and volumes can be realized. The invention has the characteristics of intelligence, real-time monitoring, wide application range, flexibility and convenience, and strong comprehensiveness, and is suitable for wide application in many fields such as material science, physical science, industry, agriculture, forestry, and biomedicine.

Description

technical field [0001] The invention relates to a microwave dielectric constant measuring device, in particular to a graphene-based solution dielectric constant measuring device and a measuring method at different temperatures and concentrations, and is suitable for application in fields such as industry, medicine, education, and national defense. Background technique [0002] The dielectric constant is an important parameter of the electromagnetic properties of dielectric materials. Among the currently known materials, graphene-based materials have the fastest electron transfer rate, and have been proven to have broad application prospects in high-efficiency modulators, transistors, and large-capacity photovoltaic cells. Materials and other disciplines have had a positive and far-reaching impact. However, at present, there are rare reports on the measurement of the dielectric constant of graphene-based solutions, and there is no summary study on the variation of the dielect...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/22
CPCG01N27/221
Inventor 陈秀艳李修赵克勤褚云婷
Owner SHENYANG NORMAL UNIV
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