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Updated: Mar 21, 2026

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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
16.0K
Perfect narrow band absorber for sensing applications.
Optics Express
|May 4, 2016
Summary
We developed a novel narrow band absorber using periodic metallic nanoribbon arrays. This infrared absorber achieves over 99.9% absorption and shows high sensitivity for biosensing applications.
Area of Science:
- Photonics and Nanotechnology
- Materials Science
Background:
- Metamaterial absorbers are crucial for various optical applications.
- Achieving narrow bandwidth and high absorption simultaneously is challenging.
Purpose of the Study:
- To design and numerically investigate a perfect narrow band absorber.
- To explore its potential as a high-performance biosensor.
Main Methods:
- Numerical investigation of a metal-metal-dielectric-metal structure.
- Utilizing periodic metallic nanoribbon arrays.
- Analysis of absorption spectra and angular dependence.
Main Results:
- Achieved ultra-narrow absorption band (1.11 nm) with >99.9% absorption in the infrared.
- Maintained >95% absorption for incident angles from 0 to 50°.
- Demonstrated high sensing performance with sensitivity of 1170 nm/RIU and FOM of 1054.
Conclusions:
- The proposed structure is an efficient narrow band absorber.
- It exhibits excellent sensing capabilities, making it suitable for biosensor applications.
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