Advanced Nanostructure in Terahertz Technology and Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: closed (30 October 2023) | Viewed by 1206

Special Issue Editor


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Guest Editor
School of Microelectronics and Control Engineering, Changzhou University, Changzhou, China
Interests: micro/nano-optics; metamaterials; metasurface; plasmonics; nanophotonics; functional nanomaterials; terahertz devices and applications

Special Issue Information

Dear Colleagues,

Terahertz (THz) technology has been widely utilized in fields of multiple disciplines because of its unique properties, such as broadband and directivity. With existing and emerging technologies increasing the demand for compact, fast, and broadband terahertz devices, high-performance THz devices are becoming indispensable.

There is a growing number of nanomaterials, such as metamaterials, graphene, carbon nanotubes, metallic nanomaterials, and nanowires, with a superior optical and electronic performance having prompted intense research and significant advances. Their novel optical and electronic properties offer much promise to the field of THz science and technology. A further understanding of the interaction with light with nanostructures is essential for the advanced manipulation of light that will bring about the subsequent development of THz optics.

Advanced nanostructures in terahertz technology and applications is an interdisciplinary field of science, combining aspects of materials science, physics, and engineering. It is a relatively new field of research, with the potential to revolutionize the way we detect, manipulate, and study electromagnetic radiation in the THz frequency range. This Special Issue aims to discuss the potential developments of nanostructures in THz technology, which will play a key role in future optoelectronic systems. Additionally, we also aim to provide an outlook on the future of nanoscale THz devices. 

Prof. Dr. Bin Tang
Guest Editor

Manuscript Submission Information

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Keywords

  • terahertz functional metamaterials
  • nanophotonics
  • integrated optics
  • plasmon-induced absorption/transmission
  • bound states in the continuum
  • electromagnetic wave absorption
  • terahertz technology and applications

Published Papers (1 paper)

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Research

16 pages, 13674 KiB  
Article
Quadruple Plasmon-Induced Transparency and Dynamic Tuning Based on Bilayer Graphene Terahertz Metamaterial
by Jiayu Zhang, Junyi Li, Shuxian Chen, Kunhua Wen and Wenjie Liu
Nanomaterials 2023, 13(17), 2474; https://doi.org/10.3390/nano13172474 - 1 Sep 2023
Viewed by 927
Abstract
This study proposes a terahertz metamaterial structure composed of a silicon–graphene–silicon sandwich, aiming to achieve quadruple plasmon-induced transparency (PIT). This phenomenon arises from the interaction coupling of bright–dark modes within the structure. The results obtained from the coupled mode theory (CMT) calculations align [...] Read more.
This study proposes a terahertz metamaterial structure composed of a silicon–graphene–silicon sandwich, aiming to achieve quadruple plasmon-induced transparency (PIT). This phenomenon arises from the interaction coupling of bright–dark modes within the structure. The results obtained from the coupled mode theory (CMT) calculations align with the simulations ones using the finite difference time domain (FDTD) method. Based on the electric field distributions at the resonant frequencies of the five bright modes, it is found that the energy localizations of the original five bright modes undergo diffusion and transfer under the influence of the dark mode. Additionally, the impact of the Fermi level of graphene on the transmission spectrum is discussed. The results reveal that the modulation depths (MDs) of 94.0%, 92.48%, 93.54%, 96.54%, 97.51%, 92.86%, 94.82%, and 88.20%, with corresponding insertion losses (ILs) of 0.52 dB, 0.98 dB, 1.37 dB, 0.70 dB, 0.43 dB, 0.63 dB, 0.16 dB, and 0.17 dB at the specific frequencies, are obtained, achieving multiple switching effects. This model holds significant potential for applications in versatile modulators and optical switches in the terahertz range. Full article
(This article belongs to the Special Issue Advanced Nanostructure in Terahertz Technology and Applications)
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