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Updated: Jun 23, 2026
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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Manipulating the loss in electromagnetic cloaks for perfect wave absorption
Christos Argyropoulos1, Efthymios Kallos, Yan Zhao
1Department of Electronic Engineering, Queen Mary, University of London, London, United Kingdom. christos.a@elec.qmul.ac.uk
Optics Express
|May 13, 2009
Summary
Researchers developed a practical electromagnetic cloak that achieves perfect wave absorption using metamaterials. This subwavelength device offers super-absorptivity across a wideband range for microwave and optical applications.
Area of Science:
- Electromagnetics
- Materials Science
- Metamaterials
Background:
- Electromagnetic cloaks are designed using transformation electromagnetics.
- Controlling electromagnetic wave interaction with cloaked objects is a key challenge.
- Metamaterials offer unique electromagnetic properties for device design.
Purpose of the Study:
- To investigate methods for manipulating electromagnetic loss in cloak designs.
- To achieve perfect wave absorption in electromagnetic cloaks.
- To propose a practical, wideband, and subwavelength absorber.
Main Methods:
- Utilizing inherent electric and magnetic losses of metamaterials.
- Applying transformation electromagnetics principles to cloak design.
- Developing a discrete layered metamaterial structure for absorption.
Main Results:
- Perfect wave absorption achieved by exploiting metamaterial losses.
- Demonstrated super-absorptivity over a moderate wideband range.
- Proposed a practical ten-layer metamaterial absorber design.
Conclusions:
- The proposed metamaterial absorber is effective for both microwave and optical frequencies.
- The device achieves wideband super-absorptivity.
- The subwavelength thickness offers advantages over conventional absorbers.
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