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Nanomaterials
Special Issues
Advances and Applications of Nanomaterials in Terahertz Science and Technology
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Advances and Applications of Nanomaterials in Terahertz Science and Technology

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

Deadline for manuscript submissions: 25 November 2025 | Viewed by 575

Special Issue Editor

Dr. Juan A. Delgado-Notario

E-Mail Website
Guest Editor
Department of Applied Physics, University of Salamanca, 37008 Salamanca, Spain
Interests: terahertz devices; 2D materials; terahertz plasmonics; terahertz detection techniques; terahertz spectroscopy

Special Issue Information

Dear Colleagues,

The Terahertz (THz) frequency range, situated between the microwave and infrared regions of the electromagnetic spectrum, holds great potential for applications such as high-speed communication, advanced imaging systems, spectroscopy, and sensing. With the ongoing rise of nanotechnology and nanosystems, including emergent two-dimensional (2D) materials (such as graphene, black phosphorus, and transition metal dichalcogenides), thin films, quantum dots, nanotubes, and many more, the interest and potential of THz science have significantly expanded. With their nanoscale dimensions and tunable physical, electrical, and/or optical properties, these nanomaterials are crucial in advancing towards next-generation, high-performance, and compact THz technologies.

The aim of this Special Issue, titled “Advances and Applications of Nanomaterials in Terahertz Science and Technology”, is to explore the latest advances in the use of nanomaterials and nanosystems in the THz region. This Special Issue welcomes original research articles and review papers focusing on theory, simulations, experiments, and/or applications of nanosystems in the frequency range from 0.1 THz to 30 THz. Topics of interest in this Special Issue include, but are not limited to, the use of nanomaterials and THz waves in the following areas:

  • Devices and systems: photodetectors, emitters, modulators, waveguides, mixers, metamaterials, photonic crystals, etc.
  • THz spectroscopy techniques.
  • Non-linear optics.
  • Applications such as imaging, communication, sensing, and more.

Dr. Juan A. Delgado-Notario
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 2400 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
  • sensing
  • imaging
  • detectors
  • sources
  • devices
  • spectroscopy
  • 2D materials
  • graphene
  • nanotechnology

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Published Papers (1 paper)

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Research

13 pages, 4389 KiB  
Article
Reconfigurable Terahertz Metamaterials Based on the Refractive Index Change of Epitaxial Vanadium Dioxide Films Across the Metal–Insulator Transition
by Chang Lu and Weizheng Liang
Nanomaterials 2025, 15(6), 439; https://doi.org/10.3390/nano15060439 - 13 Mar 2025
Viewed by 463
Abstract
The intrinsic metal–insulator transition (MIT) of VO2 films near room temperature presents significant potential for reconfigurable metamaterials in the terahertz (THz) frequency range. While previous designs primarily focused on changes in electrical conductivity across the MIT, the accompanying dielectric changes due to [...] Read more.
The intrinsic metal–insulator transition (MIT) of VO2 films near room temperature presents significant potential for reconfigurable metamaterials in the terahertz (THz) frequency range. While previous designs primarily focused on changes in electrical conductivity across the MIT, the accompanying dielectric changes due to the mesoscopic carrier confinement effect have been largely unexplored. In this study, we integrate asymmetric split-ring resonators on 35 nm epitaxial VO2 film and identify a “dielectric window” at the early stages of the MIT. This is characterized by a redshift in the resonant frequency without a significant degradation in the resonant quality. This phenomenon is attributed to an inhomogeneous phase transition in the VO2 film, which induces a purely dielectric change at the onset of the MIT, while the electrical conductivity transition occurs later, slightly above the percolation threshold. Our findings provide deeper insights into the THz properties of VO2 films and pave the way for dielectric-based, VO2 hybrid reconfigurable metamaterials. Full article
(This article belongs to the Special Issue Advances and Applications of Nanomaterials in Terahertz Science and Technology)
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