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Related Experiment Video

Updated: Mar 9, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Angle- and Polarization-Insensitive Metamaterial Absorber using Via Array.

Daecheon Lim¹, Dongju Lee¹, Sungjoon Lim¹

¹School of Electrical and Electronics Engineering, Chung-Ang University, Heukseok-Dong, Dongjak-Gu 156-756, Republic of Korea.

Scientific Reports

|December 22, 2016

Summary

This summary is machine-generated.

This study introduces a novel metamaterial absorber that maintains high absorption across various angles and polarizations. The design, featuring a split ring cross resonator with a via array, achieves near-perfect absorption, crucial for advanced electromagnetic applications.

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Area of Science:

Electromagnetics
Materials Science
Nanotechnology

Background:

Metamaterial absorbers are crucial for controlling electromagnetic waves.
Achieving wide-angle and polarization-insensitive absorption remains a significant challenge.

Purpose of the Study:

To propose and demonstrate an angle- and polarization-insensitive metamaterial absorber.
To investigate the role of a via array in enhancing absorber performance.

Main Methods:

Design of a metamaterial unit cell based on a split ring cross resonator (SRCR).
Utilizing full-wave simulations to analyze absorptivity with and without a surrounding via array.
Experimental fabrication and free-space performance testing of the proposed absorber.

Main Results:

The SRCR with a via array exhibits absorption frequency and ratio insensitive to incident angles.
The symmetric geometry ensures polarization insensitivity.
Fabricated absorber achieves 99.6% absorptivity at 11.3 GHz under normal incidence.
Maintains >90% absorptivity for TM and TE modes up to 70° and 60° incidence, respectively.

Conclusions:

The proposed metamaterial absorber effectively overcomes limitations of angle and polarization sensitivity.
The design offers a robust solution for applications requiring broadband and wide-angle electromagnetic wave absorption.