Specularly-Reflected Wave Guidance of Terahertz Plasmonic Metamaterial Based on the Metal-Wire-Woven Hole Arrays: Functional Design and Application of Transmission Spectral Dips

Autor:	Lee, Borwen You, Ryuji Iwasa, Po-Lun Chen, Tun-Yao Hung, Chih-Feng Huang, Chin-Ping Yu, Hsin-Ying
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	terahertz radiation artificial material spectroscopy aperture antennas electromagnetic scattering by periodic structures high-pass filters submillimeter wave waveguides time domain measurements frequency domain analysis
Zdroj:	Materials; Volume 16; Issue 12; Pages: 4463
ISSN:	1996-1944
DOI:	10.3390/ma16124463
Popis:	Terahertz (THz) plasmonic metamaterial, based on a metal-wire-woven hole array (MWW-HA), is investigated for the distinct power depletion in the transmittance spectrum of 0.1–2 THz, including the reflected waves from metal holes and woven metal wires. Woven metal wires have four orders of power depletion, which perform sharp dips in a transmittance spectrum. However, only the first-order dip at the metal–hole–reflection band dominates specular reflection with a phase retardation of approximately π. The optical path length and metal surface conductivity are modified to study MWW-HA specular reflection. This experimental modification shows that the first order of MWW-HA power depletion is sustainable and sensitively correlated with a bending angle of the woven metal wire. Specularly reflected THz waves are successfully presented in hollow-core pipe wave guidance specified from MWW-HA pipe wall reflectivity.
Databáze:	OpenAIRE
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