Related Experiment Video
Updated: Jul 2, 2026

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
A highly symmetric two-handed metamaterial spontaneously matching the wave impedance
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC.
Abstract:
We demonstrate a two-handed metamaterial (THM), composed of highly symmetric three-layered structures operated at normal incidence. Not only does the THM exhibit two distinct allowed bands with right-handed and left-handed electromagnetic responses, but posses a further advantage of being independent to the polarizations of external excitations. In addition, the THM automatically matches the wave impedance in free space, leading to maximum transmittances about 0.8 dB in the left-handed band and almost 0 dB in the right-handed band, respectively. Such a THM can be employed for diverse electromagnetic devices including dual-band bandpass filters, ultra-wide bandpass filters and superlenses.
Related Concept Videos
Standing Waves in a Cavity
Standing Electromagnetic Waves
Suppose a sheet of a perfect conductor is placed in the yz-plane, and a linearly polarized electromagnetic wave traveling in the...
Mesh Analysis for AC Circuits
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
Symmetry in Maxwell's Equations
Plane Electromagnetic Waves I
The EM field is assumed to be a...
Propagation of Waves
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...

