Submit to Nanomaterials Review for Nanomaterials Propose a Special Issue

Journal Browser

Advanced Nanomaterials in Terahertz and Microwave Technology

Print Special Issue Flyer
Special Issue Editors
Special Issue Information
Keywords
Published Papers

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

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 5395

Share This Special Issue

Special Issue Editor

Prof. Dr. Yongzhi Cheng

E-Mail Website
Guest Editor

School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
Interests: microwave technology; terahertz; plasmonics; metasurface; metamaterial; electromagnetic field; polarization; absorption; semiconductor device; terahertz device; wavefront manipulation

Special Issue Information

Dear Colleagues,

Nanomaterials are materials with typical size features in the lower nanometer size range and characteristic mesoscopic properties, for example, quantum size effects. These properties make them attractive objects of fundamental research and potential new applications. The scope of Nanomaterials covers the preparation, characterization and application of all nanomaterials and nanostructure(s). The microwave (1–50 GHz) and terahertz (THz) wave ranges (0.1–10 THz) lie naturally at the boundaries between optics and electronics. Historically considered separated disciplines in many contexts, they are now increasingly considered to be under the same umbrella, and researchers in both areas borrow and adapt successful concepts from each other. The novel optical and electronic properties of nanomaterials offer much promise to the field of THz and microwave science and technology. This makes the field especially suited to interdisciplinary approaches connecting different areas and techniques.

This Special Issue of Nanomaterials aims to provide an overview of and recent progress in advanced nanomaterials in THz and microwave technology. The format of welcomed articles includes full papers, communications, and reviews. Potential topics include but are not limited to advanced nanomaterials in terahertz and microwave technology (synthesis, fabrication, properties, and applications of advanced nanomaterials at the THz and microwave region; control of THz and microwave (propagation, polarization, phase, amplitude) in nanomaterials; THz and microwave plasmonic nanomaterials, switching and bistability; THz and microwave plasmonic metamaterials and metasurface; etc.).

Our mission is the advancement of nanomaterials in THz and microwave science and technology through the spread of knowledge, providing an open forum to exchange new ideas and enhance novel solutions and visions, especially promoting cross-disciplinary approaches.

Prof. Dr. Yongzhi Cheng
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. Nanomaterials 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 2900 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

all-dielectric
all-metal
nanostructure(s)
microstructure(s)
phase-changing
thermal
micro-electromechanical
liquid crystal
fabrication technology
synthesis
graphene
ceramic
ferrite
compound
metasurfaces
metamaterials
simulation and modeling
detection
sensing
spectroscopy and metrology
biomedical and life science applications

Published Papers (4 papers)

Download All Papers

Research

Jump to: Review

15 pages, 4053 KiB

Open AccessArticle

Photo-Excited Metasurface for Tunable Terahertz Reflective Circular Polarization Conversion and Anomalous Beam Deflection at Two Frequencies Independently

by Zhixiang Xu, Cheng Ni, Yongzhi Cheng, Linhui Dong and Ling Wu

Nanomaterials 2023, 13(12), 1846; https://doi.org/10.3390/nano13121846 - 12 Jun 2023

Cited by 15 | Viewed by 1318

Abstract

In this paper, a photo-excited metasurface (MS) based on hybrid patterned photoconductive silicon (Si) structures was proposed in the terahertz (THz) region, which can realize the tunable reflective circular polarization (CP) conversion and beam deflection effect at two frequencies independently. The unit cell of the proposed MS consists of a metal circular-ring (CR), Si ellipse-shaped-patch (ESP) and circular-double-split-ring (CDSR) structure, a middle dielectric substrate, and a bottom metal ground plane. By altering the external infrared-beam pumping power, it is possible to modify the electric conductivity of both the Si ESP and CDSR components. By varying the conductivity of the Si array in this manner, the proposed MS can achieve a reflective CP conversion efficiency that ranges from 0% to 96.6% at a lower frequency of 0.65 THz, and from 0% to 89.3% at a higher frequency of 1.37 THz. Furthermore, the corresponding modulation depth of this MS is as high as 96.6% and 89.3% at two distinct and independent frequencies, respectively. Moreover, at the lower and higher frequencies, the 2π phase shift can also be achieved by respectively rotating the oriented angle (α_i) of the Si ESP and CDSR structures. Finally, an MS supercell is constructed for the reflective CP beam deflection, and the efficiency is dynamically tuned from 0% to 99% at the two independent frequencies. Due to its excellent photo-excited response, the proposed MS may find potential applications in active functional THz wavefront devices, such as modulators, switches, and deflectors. Full article

(This article belongs to the Special Issue Advanced Nanomaterials in Terahertz and Microwave Technology)

► Show Figures

Figure 1

14 pages, 13149 KiB

Open AccessArticle

Design and Preparation of Flexible Graphene/Nonwoven Composites with Simultaneous Broadband Absorption and Stable Properties

by Song Bi, Yongzhi Song, Genliang Hou, Hao Li, Nengjun Yang and Zhaohui Liu

Nanomaterials 2023, 13(4), 634; https://doi.org/10.3390/nano13040634 - 5 Feb 2023

Cited by 3 | Viewed by 1370

Abstract

As the world moves into the 21st century, the complex electromagnetic wave environment is receiving widespread attention due to its impact on human health, suggesting the critical importance of wearable absorbing materials. In this paper, graphene nonwoven (RGO/NW) composites were prepared by diffusely distributing graphene sheets in a polypropylene three-dimensional framework through Hummers’ method. Moreover, based on the Jaumann structural material design concept, the RGO/NW composite was designed as a multilayer microwave absorber, with self-recovery capability. It achieves effective absorption (reflection loss of −10 dB) in the 2~18 GHz electromagnetic wave frequency domain, exhibiting a larger bandwidth than that reported in the literature for absorbers of equivalent thickness. In addition, the rationally designed three-layer sample has an electromagnetic wave absorption of over 97% (reflection loss of −15 dB) of the bandwidth over 14 GHz. In addition, due to the physical and chemical stability of graphene and the deformation recovery ability of nonwoven fabric, the absorber also shows good deformation recovery ability and stable absorption performance. This broadband absorption and extreme environmental adaptability make this flexible absorber promising for various applications, especially for personnel wearable devices. Full article

(This article belongs to the Special Issue Advanced Nanomaterials in Terahertz and Microwave Technology)

► Show Figures

Figure 1

12 pages, 3313 KiB

Open AccessArticle

An Amplitude-Modulated Metadevice with Switchable Reflection, Transmission, and Absorption

by Sheng Ye, Chengye Huang, Jinglin He, Hanru Shao, Minhua Li and Jianfeng Dong

Nanomaterials 2022, 12(23), 4227; https://doi.org/10.3390/nano12234227 - 28 Nov 2022

Cited by 3 | Viewed by 1304

Abstract

In this paper, we propose a reconfigurable metadevice with independent polarization control based on a 90° rotationally symmetric microstructure. Three functionalities of broadband high-efficiency transmission, broadband high-efficiency reflection, and perfect absorption are switched by the on-state and off-state PIN diodes. Coding metadevices designed with diversified lumped element combinations are further studied in detail. By controlling the two diodes on the top layer in opposite states, absorption bandwidth is significantly improved. Reasonable arrangements of coding sequences allow for reflected dual/multi-beam modulation. Electric field distribution, power loss, complex impedance functions, and equivalent circuit models are used to better analyze the physical mechanism of the design. A prototype of the microstructure has been fabricated, and the experimental results agree well with the simulation. Electronic components integrated microstructures with high degrees of freedom have potential applications in intelligent wireless communication, electronic detection, advanced sensors, and smart stealth radomes. Full article

(This article belongs to the Special Issue Advanced Nanomaterials in Terahertz and Microwave Technology)

► Show Figures

Figure 1

Review

Jump to: Research

34 pages, 6927 KiB

Open AccessReview

Recent Advances in Reconfigurable Metasurfaces: Principle and Applications

by Ziyang Zhang, Hongyu Shi, Luyi Wang, Juan Chen, Xiaoming Chen, Jianjia Yi, Anxue Zhang and Haiwen Liu

Nanomaterials 2023, 13(3), 534; https://doi.org/10.3390/nano13030534 - 28 Jan 2023

Cited by 9 | Viewed by 4561

Abstract

Metasurfaces have shown their great capability to manipulate electromagnetic waves. As a new concept, reconfigurable metasurfaces attract researchers’ attention. There are many kinds of reconfigurable components, devices and materials that can be loaded on metasurfaces. When cooperating with reconfigurable structures, dynamic control of the responses of metasurfaces are realized under external excitations, offering new opportunities to manipulate electromagnetic waves dynamically. This review introduces some common methods to design reconfigurable metasurfaces classified by the techniques they use, such as special materials, semiconductor components and mechanical devices. Specifically, this review provides a comparison among all the methods mentioned and discusses their pros and cons. Finally, based on the unsolved problems in the designs and applications, the challenges and possible developments in the future are discussed. Full article

(This article belongs to the Special Issue Advanced Nanomaterials in Terahertz and Microwave Technology)

► Show Figures