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Terahertz sensor

A sensor and terahertz technology, applied in instruments, scientific instruments, measuring devices, etc., can solve problems such as inaccurate detection results

Active Publication Date: 2021-09-14
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when most terahertz sensors detect liquid samples at present, the samples are dried and attached to the surface, which is too different from the solution environment of biomolecules, resulting in inaccurate detection results.

Method used

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Embodiment 1

[0032] This embodiment is used to provide a terahertz sensor, such as figure 1 As shown, the sensor includes a cover layer 1 and a substrate 2 .

[0033] The cover layer 1 is arranged opposite to the substrate 2 . A metal microstructure array 3 is provided on the side of the cover layer 1 opposite to the substrate 2, and a metal mirror surface 4 is provided on the side of the substrate 2 opposite to the cover layer 1, that is, the metal microstructure array 3 is attached to the cover layer 1 and faces the substrate. On one side of the bottom 2 , a metal mirror surface 4 is attached to the side of the substrate 2 facing the cover layer 1 , and there is a gap between the metal microstructure array 3 and the metal mirror surface 4 . Through this structural setting, the metal microstructure array 3 is used as the metamaterial. Metamaterial is a kind of artificial composite electromagnetic material. The special electromagnetic characteristics can be customized on demand by adjusti...

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Abstract

The invention relates to a terahertz sensor which comprises a cover layer and a substrate. The cover layer and the substrate are oppositely arranged. A metal micro-structure array is arranged on the surface, opposite to the substrate, of the cover layer, a metal reflecting mirror surface is arranged on the surface, opposite to the cover layer, of the substrate, and there is a gap between the metal micro-structure array and the metal reflecting mirror surface. A micro-flow channel is formed in the gap between the cover layer and the metal reflecting mirror surface, the micro-flow channel is used for accommodating a liquid sample to be detected, and the height of the micro-flow channel is micron-sized. According to the invention, the metal micro-structure array is used as a metamaterial, a metamaterial wave absorber is formed by the metal micro-structure array, the metal reflecting mirror surface and the gap between the metal microstructure array and the metal reflecting mirror surface, and quantitative and qualitative detection of a liquid sample is realized by utilizing the characteristics that the metamaterial is very sensitive to the change of the dielectric property of the surrounding environment and the resonance of a local electromagnetic field is remarkably enhanced by a Fabry-Perot resonant cavity of the metamaterial wave absorber and the unique properties of terahertz waves such as low photon energy, strong penetrability, and fingerprint spectrum characteristic.

Description

technical field [0001] The invention relates to the technical field of liquid detection, in particular to a dual-band terahertz sensor integrated with a microfluidic channel in a metamaterial wave absorber. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10 THz. It has broad application prospects in the field of biomedicine due to its unique properties such as low photon energy, strong penetration, and fingerprint characteristics. At the same time, as a label-free sensor, the terahertz sensor has broad application prospects in the field of biological trace detection. However, when most terahertz sensors detect liquid samples at present, the samples are dried and attached to the surface, which is too different from the solution environment of biomolecules, resulting in inaccurate detection results. Contents of the invention [0003] The purpose of the present invention is to provide a terahertz sensor to ...

Claims

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Application Information

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IPC IPC(8): G01N21/3581G01N21/01
CPCG01N21/3581G01N21/01
Inventor 尚丽平杨洁萍邓琥李宗仁武志翔熊亮屈薇薇李占锋何俊
Owner SOUTHWEAT UNIV OF SCI & TECH
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