Recent Advances in Terahertz Devices and Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 1114

Special Issue Editors

School of Semiconductors and Physics, North University of China, Taiyuan 030051, China
Interests: metamaterials; terahertz devices; terahertz applications

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Co-Guest Editor
1. Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
2. Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
Interests: terahertz imaging; single-pixel cameras; hyperspectral imaging; spatial light modulators

Special Issue Information

Dear Colleagues,

This Special Issue, titled “Recent Advances in Terahertz Devices and Applications”, explores the latest developments in the field of terahertz technology, focusing on innovations in materials,  design, process, measurement, and applications. A terahertz wave is an electromagnetic wave with a frequency ranging from 0.1 THz to 10 THz, which is between an infrared wave and a millimeter wave. Terahertz technology has a higher frequency and a wider bandwidth, and also provides higher capacity compared to 5G technology. Therefore, devices based on terahertz technology have become one of the new research hotspots  and  has great potential in areas such as military radar, medical detection, imaging, communication and sensing, and so on. Central theme of this Special Issue include the multifunctional optimization of . Here are some examples of the key advancements made within this field:

  • Metamaterials, which enable novel properties and functions not found in natural materials, leading to breakthroughs in high-performance terahertz device design;
  • Terahertz lasers, lenses, filter, antennas, and so on, which have the potential to improve terahertz spectrum and imaging  systems, safety inspection, medical devices, and bioinstrumentation;
  • Terahertz actuators, sensors, absorbers, filters, diodes, energy harversters, detectors, and other series of terahertz wave regulation functional devices, which can be used in terahertz communication systems.

Dr. Qiannan Wu
Dr. Rayko Ivanov Stantchev
Guest Editors

Manuscript Submission Information

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Keywords

  • metamaterials
  • terahertz devices
  • terahertz imaging
  • terahertz communication
  • terahertz biomedicine

Published Papers (1 paper)

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Research

13 pages, 12245 KiB  
Article
Design of High-Gain Antenna Arrays for Terahertz Applications
by Xinran Ji, Yu Chen, Jing Li, Dian Wang, Yue Zhao, Qiannan Wu and Mengwei Li
Micromachines 2024, 15(3), 407; https://doi.org/10.3390/mi15030407 - 18 Mar 2024
Viewed by 899
Abstract
A terahertz band (0.1–10 THz) has the characteristics of rich spectrum resources, high transmission speed, strong penetration, and clear directionality. However, the terahertz signal will suffer serious attenuation and absorption during transmission. Therefore, a terahertz antenna with high gain, high efficiency, and wide [...] Read more.
A terahertz band (0.1–10 THz) has the characteristics of rich spectrum resources, high transmission speed, strong penetration, and clear directionality. However, the terahertz signal will suffer serious attenuation and absorption during transmission. Therefore, a terahertz antenna with high gain, high efficiency, and wide bandwidth is an indispensable key component of terahertz wireless systems and has become a research hotspot in the field of antennas. In this paper, a high-gain broadband antenna is presented for terahertz applications. The antenna is a three-layer structure, fed by a grounded coplanar waveguide (GCPW), using polytetrafluoroethylene (PTFE) material as the dielectric substrate, and the metal through-hole of the dielectric substrate forms a substrate-integrated waveguide (SIW) structure. The metal fence structure is introduced to reduce the coupling effect between the radiation patches and increase the radiation bandwidth and gain. The center frequency is 0.6366 THz, the operating bandwidth is 0.61–0.68 THz, the minimum value of the voltage standing wave ratio (VSWR) is 1.00158, and the peak gain is 13.14 dBi. In addition, the performance of the designed antenna with a different isolation structure, the length of the connection line, the height of the substrate, the radius of the through-hole, and the thickness of the patch is also studied. Full article
(This article belongs to the Special Issue Recent Advances in Terahertz Devices and Applications)
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