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Updated: Feb 1, 2026
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
15.9K
Graphene Based Controllable Broadband Terahertz Metamaterial Absorber with Transmission Band
Qihui Zhou1, Song Zha2, Peiguo Liu3
1College of Electronic Science, National University of Defense Technology, Changsha 410073, China. zhouqihui10@126.com.
Materials (Basel, Switzerland)
|December 2, 2018
Summary
This study introduces a novel graphene metamaterial absorber. It offers tunable broadband terahertz absorption with a distinct transmission window, useful for advanced electromagnetic applications.
Area of Science:
- Metamaterials
- Terahertz (THz) technology
- Plasmonics
Background:
- Metamaterial absorbers are crucial for controlling electromagnetic waves.
- Graphene's unique electronic properties enable tunable optical responses.
- Achieving broadband absorption with a simultaneous transmission window remains a challenge.
Purpose of the Study:
- To present a graphene-based metamaterial absorber with controllable broadband terahertz absorption.
- To integrate a transmission band within the absorber structure.
- To explore the potential applications of such a device.
Main Methods:
- Fabrication of a graphene-SiO₂-frequency selective surface (FSS) sandwich structure.
- Utilizing sinusoidal graphene for continuous plasmonic resonances.
- Employing a bandpass FSS to create a transmission window.
Main Results:
- Achieved continuous electric-tuning of absorption from 0.4 to 0.9 across a broad band (0.5-1 THz).
- Demonstrated angle and polarization-independent absorption performance.
- Obtained a transparent window with high transmittance (>0.7) peaking at 1.65 THz.
Conclusions:
- The proposed graphene metamaterial absorber offers tunable broadband THz absorption and a distinct transmission band.
- The device exhibits excellent performance characteristics, including angle and polarization independence.
- Potential applications include detection, stealth, filtering, and electromagnetic compatibility.
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