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Terahertz Metamaterials and Their Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (10 February 2022) | Viewed by 2813

Special Issue Editor

Dr. Andrei Gorodetsky
E-Mail Website
Guest Editor
University of Birmingham, Birmingham, United Kingdom
Interests: THz; terahertz imaging; phase retrieval; quantum dots; photoconductive antennas

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to modern approaches to Terahertz metamaterials design and their applications.

Terahertz metamaterials have evolved significantly since their first demonstration about 15 years ago. They have emerged as relatively simple metallic structures and have made a long way towards numerous designs and applications, including filters, amplitude and phase modulators, chiral and three-dimensional structures for polarisation manipulation, perfect absorbers and reflectors. Metamaterials are used as highly susceptible sensors due to the strong resonances they possess. Electrically, optically and mechanically tunable metamaterials have paved the way to ultrafast tunable THz modulators, including highly controllable phase shifters, absorbers, beam steerers and spatial light modulators. Modern trends in the design of metamaterials, and in particular of THz metamaterials, include all-dielectric and phase-change material-based metamaterials and metasurfaces.

It is our pleasure to invite you to submit a manuscript for this Special Issue. Fundamental and applied research on the design, simulation, fabrication, characterisation and applications of terahertz metamaterials will be covered comprehensively, with special focus on dynamic and highly tunable metamaterials, all-dielectric metamaterials and metasurfaces and biomedical applications of terahertz metamaterials. Full papers, communications, and reviews are all welcome.

Dr. Andrei Gorodetsky
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Terahertz metamaterial devices
  • Dynamic terahertz metamaterials
  • Dielectric terahertz metamaterials
  • Terahertz metasurfaces
  • Terahertz metamaterial sensors

Published Papers (1 paper)

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Research

20 pages, 39064 KiB  
Article
Highly Transparent and Polarization-Maintained Terahertz Plasmonic Metamaterials Based on Metal-Wire-Woven Hole Arrays: Fundamentals and Characterization of Transmission Spectral Peaks
Materials 2022, 15(5), 1871; https://doi.org/10.3390/ma15051871 - 02 Mar 2022
Cited by 3 | Viewed by 2235
Abstract
Metal-hole-supported terahertz (THz) waves through the structure of a metal-wire-woven hole array (MWW-HA) present high-frequency-passed transmittance spectra of one plasmonic metamaterial with artificial plasmonic frequencies, which are inversely proportional to metal-hole widths. For the transmitted THz waves of MWW-HA, transverse-electric (TE) and transverse-magnetic [...] Read more.
Metal-hole-supported terahertz (THz) waves through the structure of a metal-wire-woven hole array (MWW-HA) present high-frequency-passed transmittance spectra of one plasmonic metamaterial with artificial plasmonic frequencies, which are inversely proportional to metal-hole widths. For the transmitted THz waves of MWW-HA, transverse-electric (TE) and transverse-magnetic (TM) waveguide modes mix within a symmetric metal-hole boundary. THz resonance waves transversely crossing the holes of MWW-HA are experimentally characterized with spectral peaks in the frequency range of 0.1–2 THz that are correlated with aperture sizes, unit-cell-hole widths, metal-wire thicknesses, and wire-bending angles. The metal-hole-transported resonance waves of MWW-HA are dominated by TE waveguide modes instead of TM ones because a hole width of MWW-HA is approximate to the half wavelength of a resonance wave. The round metal edges of the woven metal wires can minimize the effective optical length of a thick metal hole to transmit THz resonance waves, thereby resulting the smallest rotation angle of linear polarization and high transmittance up to 0.94. An MWW-HA structure is therefore reliable for supporting metal-hole resonance waves with low resistance, whereas a metal-slab-perforated hole array cannot achieve the same result. Full article
(This article belongs to the Special Issue Terahertz Metamaterials and Their Applications)
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