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Method for realizing metasurface biaxial strain sensing by utilizing polarization-phase-deformation relationship

A strain sensing, biaxial strain technology, applied in the direction of using optical devices, antennas, instruments, etc., can solve the problems of design difficulties, sensing sensitivity limitations, etc., and achieve the effects of light weight, improved sensitivity, and simple structure

Inactive Publication Date: 2021-03-19
CHONGQING UNIV
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Problems solved by technology

With the development of related technologies, the improvement of the sensing sensitivity of these two methods has encountered great limitations.
The sensitivity of direct sensing methods based on frequency shift or amplitude change completely depends on improving the sensitivity of detection equipment, so the design of such methods is becoming increasingly difficult, and the mechanism of stress detection has become the main bottleneck in this field

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  • Method for realizing metasurface biaxial strain sensing by utilizing polarization-phase-deformation relationship
  • Method for realizing metasurface biaxial strain sensing by utilizing polarization-phase-deformation relationship
  • Method for realizing metasurface biaxial strain sensing by utilizing polarization-phase-deformation relationship

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Embodiment Construction

[0034]The present invention will be further described below with reference to the accompanying drawings and specific embodiments. A specific embodiment of the present inventionfigure 1 As shown, in the embodiment of the method of achieving a hyperopalaxic strain sensing using a polarized-phase-deformation relationship, the strain sensing super surface structure is ultravadroed by 10 × 10 periodic arrangements. The surface cell structure consists of a flexible microstrip structure with a thickness of 0.254 mm to ensure that the hyperbody has a more obvious stress-derived characteristic. The operating frequency is in the range of 12GH-13GHz, and the unit size is 10 × 10mm.2For sub-wave size to meet the needs of super surface working stability. It is worth mentioning that in order to ensure a certain amount of force, the super surface caliber should be not less than 10 × 10 scale, and the specific need should be selected according to the actual needs and working environment.

[0035]The o...

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Abstract

The invention discloses a method for realizing metasurface biaxial strain sensing by utilizing a polarization-phase-deformation relationship. According to the method, the strain condition of a to-be-detected structure is detected and evaluated by analyzing reflection data of multiple polarizations of a metasurface sensor. Compared with a traditional physical sensing method, the method can realizewireless and biaxial work, and is convenient to apply to a non-contact and complex environment; compared with a direct sensing method of a traditional metasurface type sensor based on frequency shiftor amplitude change, the strain sensing sensitivity of the sensing method is remarkably improved. The lantern-shaped metasurface unit structure designed by the invention has a high-sensitivity response relationship between an anisotropic phase and deformation, strain sensing of the metasurface is further obtained by means of derivation of the phase and polarization relationship, and stress can beaccurately detected and pre-judged.

Description

Technical field[0001]The present invention relates to the general calculation of stress (G01L1 / 24), and the antenna (H01Q15 / 00) is specifically used to realize the method of achieving a double-axial strain sensing sensing using the polarization-phase-deformation relationship.Background technique[0002]Ultra-surface as a two-dimensional form of super material, has always been a hot spot in recent years. By analyzing the electromagnetic response of the stretchable or flexible super surface in the case of strain, the detection and precise assessment of deformation has become an effective means of stress sensing. More traditional physics strain sensors, the super surface-based wireless strain sensor can provide non-contact precise stress detection, more suitable for stress detection of many complex environments. At present, there are two main methods for hyperbial strain sensing: one is the offset of the resonant frequency caused by the deformation; the other is a change in transmiss...

Claims

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Application Information

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IPC IPC(8): G01B11/16H01Q15/00
CPCG01B11/16H01Q15/004
Inventor 孙志伟曹海林刘润龚鹤凌
Owner CHONGQING UNIV
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