Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Metamaterial absorber, device and system and preparation method thereof

A technology of metamaterials and absorbers, applied in the field of terahertz electromagnetic wave metamaterials, to achieve effective and flexible regulation of absorption rate and absorption frequency

Pending Publication Date: 2021-08-31
JIANGSU UNIV +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing terahertz wave absorbers are difficult to dynamically control the absorption of terahertz waves effectively and flexibly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Metamaterial absorber, device and system and preparation method thereof
  • Metamaterial absorber, device and system and preparation method thereof
  • Metamaterial absorber, device and system and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as figure 1 As shown, this embodiment provides a metamaterial absorber, the metamaterial absorber includes: a light-transmitting medium layer 3, as a preferred implementation mode, the light-transmitting medium layer 3 of this embodiment specifically uses amethyst Glass layer; reflective metal layer 4, arranged on the lower surface of the amethyst glass layer 3; graphene structure layer 2, arranged on the upper surface of the amethyst glass layer 3, metal microresonator structure layer 1, arranged on the graphene structure layer 2; the metal microresonator structure layer 1 is a metal layer with a bus topology.

[0061] The metal micro-resonator structure layer 1 with a bus topology structure includes at least one basic metal unit, and one basic metal unit is a micro-resonator.

[0062] Optionally, as in figure 2 As shown, the basic metal unit in this embodiment includes one bus metal strip 5, five branch metal strips and five metal blocks. In this embodiment, ...

Embodiment 2

[0074] See Figure 7 , this embodiment provides a metamaterial absorber, including: a laser emitting module, a voltage module, and a metamaterial absorber shown in Embodiment 1.

[0075] The laser emitting module is arranged on the metal micro-resonator structure layer of the metamaterial absorber, and the voltage module is connected to the metal micro-resonator structure layer through the first electrode and the second electrode.

[0076] The metamaterial absorber in this embodiment includes a plurality of basic absorption units, and the basic absorption unit includes a microresonator, a basic graphene unit, an amethyst glass layer and a reflective metal layer located under the basic graphene unit. During the control process, multiple basic absorption units interact with each other to transmit and couple the electromagnetic responses to each other, and jointly absorb the terahertz wave.

[0077] In this embodiment, the terahertz wave is vertically incident from the metal mic...

Embodiment 3

[0085] See Figure 8 , this embodiment provides a metamaterial absorption system, including a controller and a metamaterial absorption device shown in Embodiment 2.

[0086] The controller is respectively connected with the laser emission module and the voltage module in the metamaterial absorption device; the controller is used to control parameters such as the wavelength and power density of the laser output from the laser emission module, and the controller is also used to control the output voltage value of the voltage module. The controller realizes effective and flexible regulation of the absorption rate and absorption frequency of the terahertz electromagnetic wave by the metamaterial absorber by controlling the working parameters of the laser and the voltage.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a metamaterial absorber, device and system and a preparation method thereof, and relates to the technical field of terahertz electromagnetic wave metamaterials. The metamaterial absorber comprises a metal microresonator structure layer, a graphene structure layer, a light-transmitting dielectric layer and a reflective metal layer. Under the action of external laser and / or external voltage, the graphene structure layer, the metal microresonator structure layer and terahertz electromagnetic waves form plasmon resonance, and the plasmon resonance and Fabry-Perot interference resonance formed by the light-transmitting dielectric layer are mutually coupled to absorb the terahertz electromagnetic waves. The conductivity of the graphene structure layer is changed by adjusting parameters of external laser and / or external voltage so as to adjust the intensity of the plasma resonance, and then the mutual coupling intensity of the Fabry-Perot interference resonance and the plasma resonance is changed, so that the absorption intensity of terahertz electromagnetic waves is controlled, and effective and flexible regulation and control of the absorption rate and the absorption frequency of terahertz electromagnetic waves are realized.

Description

technical field [0001] The invention relates to the technical field of terahertz electromagnetic wave metamaterials, in particular to a metamaterial absorber, device, system and preparation method thereof. Background technique [0002] The terahertz (THz) frequency band is also called the THz gap. Terahertz technology has become one of the top ten core technologies in the 21st century. Terahertz wave is a kind of electromagnetic wave, with a wavelength in the range of 30 μm to 3000 μm, between microwave and infrared. [0003] Terahertz photons have very low energy and high penetrability, can resonate with biological macromolecules, and have the characteristics of biological fingerprints. These unique electromagnetic wave characteristics make terahertz technology widely used in biomedicine, communication, public safety and so on. Therefore, the absorption and regulation of terahertz electromagnetic waves has become the focus of current scientific research. However, it is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q17/00H05K3/02H05K3/06
CPCH01Q15/0086H01Q17/007H01Q17/008H05K3/022H05K3/06
Inventor 杨茂生闫昕梁兰菊姚海云王猛韦德泉
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com