Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Terahertz waveband broadband absorbing metamaterial

A terahertz and metamaterial technology, which is applied in the field of broadband absorption metamaterials in the terahertz band, can solve the problems of difficult processing and limited absorption bandwidth, and achieve the effect of low manufacturing precision requirements, easy mass production, and improved duty cycle.

Inactive Publication Date: 2014-01-29
HUAZHONG UNIV OF SCI & TECH
View PDF2 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a terahertz band broadband absorbing metamaterial, the purpose of which is to realize the terahertz band broadband absorbing function with a single layer of small periodic size metamaterial, thereby solving the current problem The problem of limited absorption bandwidth and difficult processing of metamaterials in the terahertz band

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
  • Terahertz waveband broadband absorbing metamaterial
  • Terahertz waveband broadband absorbing metamaterial
  • Terahertz waveband broadband absorbing metamaterial

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The terahertz band broadband absorbing metamaterial includes a metal reflective layer, a dielectric layer and a metal pattern layer. The metal reflection layer is a continuous metal aluminum film, the thickness of the reflection layer is H3=1μm, and the conductivity of metal aluminum is σ=3.56×10 7 S / m; the dielectric layer is polyimide, the thickness H2=9μm, the dielectric constant ε=3.5, the magnetic permeability is μ=1; the metal pattern layer is 8 concentric square metal rings, the concentric metal rings Metal section width W=0.4μm, height H1=0.05μm, distance between each metal ring is D=0.3μm, outermost square metal ring side length L1=19.6μm, innermost square ring side length L2=8μm, two-dimensional Periodic array metamaterial period is P=30μm. The preferred scheme of the metal pattern layer is as figure 2 shown.

[0030] The above terahertz band broadband absorbing metamaterial has been simulated by CST, and its absorption spectrum is as follows: image 3 sh...

Embodiment 2

[0032] The terahertz band broadband absorbing metamaterial includes a metal reflective layer, a dielectric layer and a metal pattern layer. The metal reflection layer is a continuous metal aluminum film, the thickness of the reflection layer is H3=1μm, and the conductivity of metal aluminum is σ=3.56×10 7 S / m; the dielectric layer is polyimide, the thickness of the dielectric layer is H2=6μm, the dielectric constant ε=3.5, and the magnetic permeability is μ=1; the metal pattern layer is 8 concentric square metal rings, and the concentric metal The metal section width of the ring is W=0.2 μm, the height H1=0.04 μm, the distance between each metal ring is D=0.1 μm, the side length of the outermost square metal ring is L1=19.6 μm, and the side length of the innermost square ring is L2=14 μm. The period of the two-dimensional periodic array metamaterial is P=30μm. The preferred scheme of the metal pattern layer is as figure 2 shown.

[0033] The above terahertz band broadband ...

Embodiment 3

[0035]The broadband absorbing terahertz band broadband absorbing metamaterial includes a metal reflective layer, a dielectric layer and a metal pattern layer. The metal reflection layer is a continuous metal aluminum film, the thickness of the reflection layer is H3=1μm, and the conductivity of metal aluminum is σ=3.56×10 7 S / m; the dielectric layer is polyimide, the thickness of the dielectric layer is H2=10μm, the real permittivity ε=3.5, and the magnetic permeability is μ=1; the metal pattern layer is 8 concentric square metal rings, and the concentric The metal section width of the metal ring is W=0.6μm, the height H1=0.6μm, the distance between each metal ring is D=0.4μm, the side length of the outermost square metal ring is L1=19.6μm, and the side length of the innermost square ring is L2=3.3 μm, the period of the two-dimensional periodic array metamaterial is P=30μm. The preferred scheme of the metal pattern layer is as figure 2 shown.

[0036] The above terahertz b...

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
heightaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a terahertz waveband broadband absorbing metamaterial and belongs to the field of electromagnetic communication. The terahertz waveband broadband absorbing metamaterial comprises a metal reflection layer, a medium layer and a metal pattern layer, wherein the medium layer is arranged between the metal reflection layer and the metal pattern layer, the metal reflection layer is a continuous metal film and in the thickness larger than skin depth of Terahertz waves, the metal pattern layer is composed of periodically arranged unit devices which are a plurality of concentric metal rings, and absorbing bandwidth portions of the adjacent single rings are overlapped to form Terahertz waveband broadband absorption. Duty ratio and average absorption rate of a periodic structure of the metalmaterial are increased greatly, bandwidth control of Terahertz waveband absorption is realized by increasing and decreasing the number of the concentric metal rings, absorption bandwidth is flexible and convenient to adjust, the pattern structure is simple, multilayer overlapping is omitted, period is short, requirements on manufacturing accuracy is low, and batch production is facilitated.

Description

technical field [0001] The invention belongs to the field of electromagnetic communication, and more specifically relates to a terahertz band broadband absorbing metamaterial. Background technique [0002] Terahertz wave (THz, 1THz=10 12 Hz) refers to electromagnetic waves with a frequency in the range of 0.1THz to 10THz. This frequency band is between macroelectronics and microphotonics. It coincides with infrared waves at high frequencies and coincides with millimeter waves at low frequencies. Because this range is neither suitable for completely using optical theory, nor suitable for completely using microwave technology research, and has long lacked effective methods for generating and detecting terahertz waves, it is called the "THz gap (THz gap) of electromagnetic waves. gap)". However, terahertz spectroscopy contains very rich physical and chemical information, so it has very important potential application value in the detection of material structure, detection and...

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): H01Q17/00
Inventor 陈长虹冯士高孟德佳
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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