High-Q-value temperature sensing asymmetric resonance structure based on liquid metal
A liquid metal, resonant structure technology, applied in the field of temperature sensing detection technology, can solve the problems of low sensitivity, weak deformation, small dynamic range, etc., and achieve the effect of high sensing sensitivity and high sensing resolution
Inactive Publication Date: 2020-09-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
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Problems solved by technology
[0006] The temperature sensing technology based on the difference in thermal expansion coefficient is ingeniously designed and novel, but the deformation caused by the difference in thermal expansion coefficient of heterogeneous composite materials is relatively weak, and there are also mechanisms such as low temperature sensing resolution, low sensitivity, and small dynamic range. Defects, currently only in the stage of theoretical analysis and feasibility study
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[0028] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.
[0029] A liquid metal-based high-Q temperature-sensing resonant structure of the present invention is jointly designed from the theory of asymmetric resonance effects and the properties of liquid metal such as expansion and fluidity, and all array units (constituted by liquid metal injection) are Wrapped in the medium, the liquid metal is injected into the medium through holes before the medium is formed or on the medium. The resonant structure of the present invention can produce a Q value of 21-111 and a sensitivity of 15-16 MHz / °C at 1.8-40 GHz as the temperature changes.
[0030] The resonant structure of the present invention includes periodically arranged resonant units, and each resonant unit is wrapped in a dielectric layer. A gap ring s...
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Abstract
The invention discloses a high-Q-value temperature sensing asymmetric resonance structure based on liquid metal. The structure is applied to the technical fields of sensing detection and radiation control. The problem that an existing sensor is low in sensitivity is solved. The structure is designed according to the asymmetric resonance effect theory in combination with the characteristics of thermal expansibility, fluidity and the like of liquid metal, so that the resonance unit has the characteristic of high Q value and can realize higher sensing resolution, and meanwhile, in order to improve the temperature sensing capability, a liquid storage structure is added in the structure, so that higher sensing sensitivity is realized.
Description
technical field [0001] The invention belongs to the fields of sensory detection and radiation control, and in particular relates to a temperature sensory detection technology. Background technique [0002] Electromagnetic Metamaterials (Electromagnetic Metamaterials) is a kind of artificially synthesized structural materials with singular electromagnetic properties. It provides an effective way for the design and preparation of new devices in the field. There is a strong correlation between the resonant frequency / strength of electromagnetic metamaterials and unit structural parameters, dielectric material properties, and surrounding environmental factors. Based on this, new sensing technologies and implementation methods based on electromagnetic metamaterials can be developed, and can be widely used in sensing And detect the characteristics and changes of media, pressure, humidity, temperature, chemistry and biology in the environment. [0003] In the field of sensing appl...
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IPC IPC(8): H01P7/00H01P7/06H01P7/10
CPCH01P7/00H01P7/06H01P7/10
Inventor 李建陈德旭马亮文光俊余华龙黄勇军李贵张东亮
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA