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A method for testing and extracting terahertz complex permittivity of biomacromolecular materials

A technology of complex permittivity and biological macromolecules, which is applied in the measurement of electrical variables, dielectric properties, resistance/reactance/impedance, etc., to achieve the effect of convenient acquisition and overcoming extraction difficulties

Active Publication Date: 2020-10-23
TIANJIN UNIV
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for testing and extracting the terahertz complex permittivity of biomacromolecular materials that solves the problem of extracting the terahertz complex permittivity of biomacromolecular materials

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  • A method for testing and extracting terahertz complex permittivity of biomacromolecular materials
  • A method for testing and extracting terahertz complex permittivity of biomacromolecular materials
  • A method for testing and extracting terahertz complex permittivity of biomacromolecular materials

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Embodiment Construction

[0019] A method for testing and extracting terahertz complex permittivity of biomacromolecular materials of the present invention will be described in detail below in conjunction with the embodiments and accompanying drawings.

[0020] A method for testing and extracting the terahertz complex permittivity of biomacromolecular materials of the present invention comprises the following steps:

[0021] 1) Calibrate the terahertz test system to the rectangular waveguide port;

[0022] 2) Filling the macromolecular material into the rectangular waveguide sheet;

[0023] It is a 90GHz-140GHz rectangular waveguide sheet filled with macromolecular material glyceryl monooleate or glyceryl monolinolenate or glycerol monolaurate to a thickness of 0.873mm.

[0024] 3) Use the two rectangular waveguide ports of the terahertz test system to clamp the rectangular waveguide sheet filled with macromolecular materials to test the S parameters;

[0025] 4) According to the transmission-reflect...

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Abstract

The invention discloses a method for testing and extracting biomacromolecule material terahertz complex dielectric constant. The method is characterized by comprising the following steps: calibratinga terahertz testing system to rectangle waveguide outlets; filling biomacromolecule material to a rectangle waveguide sheet; clamping the rectangle waveguide sheet filled with the biomacromolecule material by using two rectangle waveguide outlets of the terahertz testing system, and testing a S parameter; extracting complex dielectric constants and complex magnetic conductivities of the biomacromolecule material by using the S parameter so as to acquire multiple groups of complex dielectric constants and complex magnetic conductivities; and selecting the group with the real part of the complexmagnetic conductivity closet to 1 as a final result from multiple groups of extraction results by utilizing the feature that the real part of the biomacromolecule complex magnetic conductivity is closest to 1. The biomacromolecule material terahertz complex dielectric constant extraction difficulty is firstly overcome through the method disclosed by the invention, a unique value of the biomacromolecule material complex dielectric constant can be conveniently acquired by using the method disclosed by the invention, and the method can provide precious information for applying the biomacromolecule material to the industrial production.

Description

technical field [0001] The invention relates to a method for extracting complex permittivity of materials. In particular, it relates to a method for testing and extracting terahertz complex permittivity of biological macromolecular materials. Background technique [0002] Before applying biomacromolecular materials to industries such as medicine and food, it is necessary to obtain their molecular information. The most commonly used method is X-ray test or Raman test to obtain the energy spectrum of the biomacromolecular material, and then the information of the macromolecular material can be obtained. However, this information does not contain terahertz frequency band information. The current research results show that the vibration and rotation energy levels of biomacromolecular materials fall in the terahertz frequency band. Therefore, how to test the terahertz parameters of biomacromolecular materials is a very important thing. One of the important parameters to charac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
CPCG01R27/2617
Inventor 马建国杨闯傅海鹏
Owner TIANJIN UNIV
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