Related Experiment Video
Updated: Apr 15, 2026
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
16.0K
Multiband and broadband polarization-insensitive perfect absorber devices based on a tunable and thin double
Optics Express
|April 4, 2015
Summary
We developed a tunable metamaterial perfect absorber with multiband and broadband absorption. This polarization-insensitive device achieves over 90% absorptivity across a wide frequency range, validated by simulations and experiments.
Area of Science:
- Metamaterials
- Electromagnetics
- Nanotechnology
Background:
- Metamaterials offer unique electromagnetic properties.
- Perfect absorbers are crucial for various applications.
- Achieving broadband and multiband absorption simultaneously is challenging.
Purpose of the Study:
- To demonstrate a polarization-insensitive perfect absorber.
- To achieve both multiband and broadband absorption using a tunable metamaterial.
- To validate the design through simulation and experimental testing.
Main Methods:
- Designing a tunable metamaterial using a double split-ring microstructure (DSRM).
- Utilizing a double-layer coating substrate.
- Analyzing angular absorption and surface current distributions.
Main Results:
- Achieved multiband absorption at different frequencies.
- Demonstrated broadband absorption (90.63% relative bandwidth) from 5.69 GHz to 15.12 GHz.
- Obtained absorptivity greater than 90% across the broadband range.
- Confirmed polarization-insensitivity and tunability via rotary angle adjustments.
Conclusions:
- The DSRM-based perfect metamaterial absorber (DSRM-PMA) effectively achieves multiband and broadband absorption.
- The device exhibits polarization-insensitivity, a key advantage for practical applications.
- Simulated and experimental results validate the proposed DSRM-PMA design for efficient light absorption.
