Dual-band metamaterial terahertz microflow sensor
A metamaterial and dual-band technology, applied in the field of sensing devices, can solve the problems of high electromagnetic energy loss and low quality factor, achieve the effects of reducing electromagnetic energy loss, enhancing interaction, and improving sensing performance
Pending Publication Date: 2022-02-18
SOUTHWEAT UNIV OF SCI & TECH
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Problems solved by technology
The existing microfluidic technology can accurately control the microfluidic channel to a small order of magnitude, reduce the absorption of incident terahertz waves by water, and thus improve the sensitivity of the sensor, but there are still problems such as high electromagnetic energy loss and low quality factor.
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] The purpose of the present invention is to provide a dual-band metamaterial terahertz microflow sensor with the characteristics of low electromagnetic energy loss, high quality factor, and high sensitivity.
[0033] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. ...
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Abstract
The invention relates to a dual-band metamaterial terahertz micro-flow sensor. A micro-flow channel for measuring a liquid sample is formed between a metal plane reflecting layer and a metal microstructure layer, and a plurality of metamaterial units are periodically arranged on the metal microstructure layer to combine the micro-flow channel with a metamaterial. The thickness of a measured liquid sample can be accurately controlled during each measurement, meanwhile, a liquid analyte and an electromagnetic field space in the microfluidic channel are fully overlapped, the interaction between the liquid analyte and the electromagnetic field space is enhanced, the sensing performance is improved, the electromagnetic energy loss can be reduced, the quality factor and the sensitivity are improved, and the requirement of designing a high-performance sensor is met.
Description
technical field [0001] The invention relates to the technical field of sensor devices, in particular to a dual-band metamaterial terahertz microflow sensor. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency range of 0.1-10 THz (corresponding to a wavelength of 0.03-3 mm). This wave band is between microwave and infrared, just in the transition zone from electronics to photonics. Terahertz waves have many unique properties: low photon energy and non-ionization. Compared with X-rays and other rays, the photon energy of THz is 4.1meV, which is only millielectron volts, which is far lower than the bond energy of various chemical bonds. It will cause structural damage to the human body and biological tissues; spectral fingerprint characteristics, the THz band contains the rotational or vibrational energy levels of most biological macromolecules, especially for proteins and nucleic acid biological organic macromolecules, so it can pass t...
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Login to View More IPC IPC(8): G01N21/3581G01N21/01
CPCG01N21/3581G01N21/01Y02P70/50
Inventor 邓琥李宗仁尚丽平刘泉澄杨洁萍武志翔熊亮屈薇薇李占锋何俊
Owner SOUTHWEAT UNIV OF SCI & TECH