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Strontium titanate dielectric layer based meta-material wave absorbing device and manufacturing method thereof

A medium layer, metamaterial technology, applied in electrical components, magnetic/electric field shielding, antennas, etc., can solve problems such as the inability to meet active tuning, and achieve the effect of promoting development and application

Inactive Publication Date: 2019-08-02
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the existing technical problems, the present invention provides a metamaterial wave absorber based on a strontium titanate dielectric layer and its manufacturing method, which solves the limitations of the existing wave absorber in the application of the passive tuning method and cannot satisfy The need for active tuning

Method used

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  • Strontium titanate dielectric layer based meta-material wave absorbing device and manufacturing method thereof
  • Strontium titanate dielectric layer based meta-material wave absorbing device and manufacturing method thereof
  • Strontium titanate dielectric layer based meta-material wave absorbing device and manufacturing method thereof

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Embodiment 1

[0041] see figure 1 , figure 2 as well as image 3 , this embodiment provides a metamaterial wave absorber based on a strontium titanate dielectric layer, which includes a bottom structure 1 , a middle dielectric layer 2 and a top resonant structure 3 . The wave absorber of this embodiment is applied to one or more devices of stealth devices, terahertz imaging devices, terahertz detection devices, electromagnetic wave detection and control devices, and solar cells, and can also be applied to other various devices that need to be tuned or device.

[0042] The underlying structure 1 includes at least one layer of metal film, and the metal film is a continuous film. The metal film has a conductivity of 5.8×10 7 S / m copper is made, and its thickness can be greater than the skin depth of electromagnetic waves in the metal. In this embodiment, the thickness hm of the underlying structure 1 is 0.3 um and is rectangular. The underlying structure 1 can be formed by stacking mult...

Embodiment 2

[0054] This embodiment provides a metamaterial wave absorber based on a strontium titanate dielectric layer, which adds a temperature control unit on the basis of Embodiment 1. The temperature control unit is used to adjust the temperature of the intermediate medium layer 2 , specifically to raise and lower the temperature of the intermediate medium layer 2 . In this way, when it is necessary to adjust the absorbing frequency band or absorbing intensity of the absorber in practical applications, the temperature of the intermediate dielectric layer 2 can be adjusted through the temperature control unit, so that the SrTiO 3 The ambient temperature of the material changes, thereby changing the absorbing frequency band or absorbing intensity of the absorber. Therefore, when other devices or devices are equipped with the absorber of this embodiment, the device or device only needs to control the temperature control unit to realize the automatic adjustment of the absorber's absorbin...

Embodiment 3

[0056] This embodiment provides a method for manufacturing a metamaterial wave absorber based on a strontium titanate dielectric layer, which is used to manufacture the metamaterial wave absorber based on a strontium titanate dielectric layer in Embodiment 1 or Embodiment 2. The method includes the following steps:

[0057] 1. According to the shape of the underlying structure 1, excavate a positioning groove on the base material whose depth is not less than the sum of the thicknesses of the underlying structure 1, the intermediate dielectric layer 2 and the top resonant structure 3;

[0058] 2. Starting from the bottom of the positioning groove, coat at least one layer of metal film, and after the metal film is shaped, pour liquid SrTiO into the positioning groove 3 material to form a solid intermediary layer 2;

[0059] 3. Delineate multiple positioning areas arranged in an array on the intermediate dielectric layer 2, and the multiple positioning areas correspond to multip...

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Abstract

The invention discloses a strontium titanate dielectric layer based meta-material wave absorbing device and a manufacturing method thereof. The wave absorbing device comprises a bottom structure, a middle dielectric layer and a top resonance structure, the bottom structure comprises at least a metal film layer, and the middle dielectric layer is fixed on the bottom structure. The top resonance structure is fixed on the middle dielectric layer, and comprises metal resonance structures arranged in an array. The metal resonance structures are all fixed in the end surface, far from the bottom structure, of the middle dielectric layer. The metal film and metal resonance structures are made of copper, and the middle dielectric layer is made of a SrTiO3 material. The SrTiO3 material serves as themiddle dielectric layer of the meta-material wave absorbing device, the outside ambient temperature can be changed to adjust the wave absorbing frequency and intensity actively, further the application field of the meta-material wave absorbing device is widened, incident electromagnetic waves in the terahertz frequency is controlled effectively, and development and application of terahertz science and technology are facilitated.

Description

technical field [0001] The present invention relates to a metamaterial wave absorber in the technical field of wave absorbers, in particular to a metamaterial wave absorber based on a strontium titanate dielectric layer, and also to the design of the metamaterial wave absorber based on a strontium titanate dielectric layer Manufacturing method. Background technique [0002] Microwave absorbers usually have a small physical size and can have specific absorption capabilities in the target frequency domain. In recent years, they have been widely used in various civil and military fields such as preventing electromagnetic interference and electromagnetic stealth. In the military field, microwave absorbers can be used as coatings for weapons and equipment, so that weapons have the ability of electromagnetic stealth, and the opponent cannot detect our personnel through weapons. RCS for various flying units. The application of microwave absorbers in specific life is mainly reflec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00H05K9/00
CPCH01Q15/0086H01Q17/007H05K9/0081
Inventor 王鑫王俊林
Owner INNER MONGOLIA UNIVERSITY
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