Date:

2025-04-30

Title of Paper:

A Broadband and omnidirectional electromagnetic wave concentrator with gradient woodpile structure

Journal:

Optics Express

Summary:

We present the first realized three-dimensional (3D) practical implementation of the so called “optical black hole” in microwave frequencies, an electromagnetic (EM) concentrator. The 3D EM wave concentrator was designed with non-resonant gradient index (GRIN) 3D woodpile photonic crystals (PCs) structure in metamaterial regime, and fabricated by Stereolithography (SL) process. Omnidirectional EM wave capture and absorbing ability of the device in a broad bandwidth (12GHz-15GHz) were validated by full-wave simulation and experiments. Such devices may have applications in microwave energy harvesting and radiation detector.

Co-author:

M. Yin, X. Tian (corr. au) et al

Volume:

Vol. 21, Iss. 16

Page Number:

pp. 19082–19090 (2013)

Translation or Not:

No

Date of Publication:

2013-07-26