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

TeraHertz wave electric control modulator

A modulator and electronic control technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of slow modulation speed and high power, and achieve the effect of less energy consumption, flexible and convenient frequency adjustment characteristics

Active Publication Date: 2018-07-17
UNIV OF SCI & TECH OF CHINA
View PDF4 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing metal and vanadium dioxide composite structures used to control the intensity of terahertz waves are all based on metal microstructures and vanadium dioxide thin films, so when the vanadium dioxide is heated by an electric current to produce a phase change, the power consumed is greater , and the modulation speed is very slow

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 wave electric control modulator
  • TeraHertz wave electric control modulator
  • TeraHertz wave electric control modulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The schematic diagram of the structure of the terahertz wave electronically controlled modulator in this embodiment is as follows image 3 As shown, the 3D structure of the terahertz wave electronically controlled modulator is as follows image 3 As shown in (a), the upper layer is a composite structure of metal microstructure array and vanadium dioxide particle array, and the lower layer is a substrate layer; the thickness of vanadium dioxide is 100nm, the thickness of Au is 150nm, the thickness of the substrate layer is 500μm, and the material of the substrate layer is trioxide Two aluminum; the left and right electrodes are externally connected with a constant current source. image 3 (b) is the details of the composite structure of the metal microstructure array and the vanadium dioxide particle array, wherein: P=100 μm, a=70 μm, b=54 μm, gap=3 μm, d=20 μm (d is two vanadium dioxide particle blocks The distance from the center of the vertical direction).

[0044] ...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a TeraHertz wave electric control modulator. The modulator includes a lining layer and multiple rows of metal microstructure arrays. The metal microstructure arrays include conductive metal strips and multiple metal frames, wherein the metal strips and the metal frames are arranged on the surface of the lining layer; the metal frames are arranged in the length direction of the conductive metal strips, and the conductive metal strips and the metal frames form sealed patterns; each metal frame is composed of at least two conductive metal strips connected with each other through vanadium dioxide particle blocks. By means of external current, metal-insulated phase transition of particulate vanadium dioxide is controlled, that is to say that the conductivity of the vanadium dioxide particle blocks is adjusted and controlled, and therefore the resonant frequency of a metal microstructure is changed to achieve efficient and fast adjustment and control over the transmitted intensity of TeraHertz waves.

Description

technical field [0001] The invention relates to the field of terahertz functional devices, in particular to a terahertz wave electronically controlled modulator based on a metal-vanadium dioxide microstructure. Background technique [0002] Devices that actively control the amplitude of electromagnetic waves are very important devices in many electromagnetic wave bands such as microwave, terahertz, mid-far infrared, and optical fiber communications. The terahertz band (0.1-10THz) is a widely used electromagnetic band. This is because natural materials have a weak response to terahertz waves, so metamaterials with artificial periodic structures are often used to manipulate terahertz waves. In order to realize the active regulation of terahertz waves, researchers combine metamaterials with some tunable materials such as graphene and vanadium dioxide to regulate terahertz waves. [0003] Vanadium dioxide is a phase-change material with excellent performance, and it has a first...

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): G02F1/01
Inventor 陆亚林蔡宏磊黄秋萍邹崇文
Owner UNIV OF SCI & TECH OF CHINA
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