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Updated: Jan 30, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Coupled Resonance Enhanced Modulation for a Graphene-Loaded Metamaterial Absorber
Dong Xiao1, Qiang Liu1, Lei Lei1
1THz Technical Research Center of Shenzhen University, Shenzhen Key Laboratory of Micro-Nano Photonic Information Technology, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Electronic Science and Technology, Shenzhen University, Shenzhen, 518060, China.
This study introduces a tunable graphene metamaterial absorber for mid-infrared light. Its absorption properties can be precisely controlled by adjusting the graphene
Area of Science:
- Metamaterials
- Optoelectronics
- Condensed Matter Physics
Background:
- Metamaterial absorbers offer unique light-interaction properties.
- Graphene's tunable electronic characteristics present opportunities for dynamic control of optical devices.
Purpose of the Study:
- To investigate a graphene-loaded metamaterial absorber in the mid-infrared spectrum.
- To explore the tunability of the absorber's performance via graphene's Fermi level.
Main Methods:
- Fabrication of a cross-shaped slot metamaterial loaded with graphene.
- Optical characterization in the mid-infrared region.
- Analysis of absorption spectra as a function of graphene's Fermi level.
Main Results:
- Enhanced light-graphene interaction due to coupled resonance.
- Significant blueshift in absorption peaks with increasing Fermi level.
- Validation of tunability through a predictive circuit model.
Conclusions:
- The proposed graphene metamaterial absorber demonstrates wide-tunability in the mid-infrared.
- Potential applications in optical switching, sensing, modulation, and biochemical detection.
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