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Updated: Aug 6, 2026
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
15.3K
Reprogrammable reflection-transmission integrated coding metasurface for real-time terahertz wavefront manipulations
Parsa Farzin1, Amir Saman Nooramin1, Mohammad Soleimani2
1School of Electrical Engineering, Iran University of Science and Technology, Tehran, 1684613114, Iran.
Scientific Reports
|May 15, 2024
Summary
This study introduces a novel graphene metasurface capable of independently controlling electromagnetic waves in both reflection and transmission modes simultaneously. This breakthrough offers full spatial coverage for terahertz applications.
Area of Science:
- Electromagnetic wave manipulation
- Metasurface technology
- Terahertz (THz) frequency applications
Background:
- Programmable metasurfaces offer cost-effective electromagnetic wave control.
- Existing metasurfaces typically operate in either reflection or transmission mode, limiting spatial coverage.
- A need exists for metasurfaces capable of simultaneous manipulation in both reflection and transmission.
Purpose of the Study:
- To introduce a novel graphene-assisted reprogrammable metasurface.
- To demonstrate independent and concurrent manipulation of electromagnetic waves in both reflection and transmission modes.
- To achieve full spatial coverage for terahertz wave control.
Main Methods:
- Design of a meta-atom utilizing two graphene sections.
- External electronic control of chemical potential distribution in graphene segments.
- Demonstration of wavefront control in reflection, transmission, and concurrent modes within the same polarization and frequency channel.
Main Results:
- Achieved independent and concurrent wavefront manipulation in both reflection and transmission modes.
- Demonstrated various programmable functionalities including single/dual beam control, beam steering, and simultaneous dual-beam control.
- Verified reprogrammability for continuous wavefront manipulation in both half-spaces.
Conclusions:
- The developed graphene metasurface provides unprecedented simultaneous control of electromagnetic waves in reflection and transmission.
- This technology enables full spatial coverage and enhanced functionality for terahertz applications.
- Potential applications include advanced imaging, encryption, miniaturized systems, and next-generation wireless communications.
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