Metasurface-Based Devices and Systems

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 693

Special Issue Editors


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Guest Editor
Optoelectronics Laboratory, Department of Electrical and Information Engineering, Polytechnic University of Bari, 70125 Bari, Italy
Interests: photonic sensors; metasurfaces; optical resonators; gyroscopes; solar cells; electronic systems; biosensors
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Special Issue Information

Dear Colleagues,

Metasurfaces represent a groundbreaking approach to controlling electromagnetic waves, enabling unprecedented functionalities and compact designs. These two-dimensional structures, composed of subwavelength-scale elements, have become a cornerstone in modern photonics and optoelectronics, transforming applications in imaging, sensing, telecommunications, and beyond.

The potential of metasurface-based devices spans diverse domains, from wavefront shaping and polarization manipulation to beam steering and holography. Their ability to achieve high efficiency, reconfigurability, and integration into planar platforms makes them a pivotal technology for next-generation systems.

Building on the growing interest and rapid advancements in this field, we are pleased to announce this Special Issue dedicated to “Metasurface-Based Devices and Systems”. We invite high-quality reviews, original research articles, and interdisciplinary contributions that address topics including, but not limited to, the following:

  • Design, simulation, and optimization of novel metasurfaces.
  • Applications in imaging, sensing, and communication technologies.
  • Advances in tunable, reconfigurable, and multifunctional metasurfaces.
  • Material innovations and scalable fabrication methods for metasurfaces.
  • Integration of metasurfaces into optoelectronic and photonic systems.

We aim to provide a platform for highlighting state-of-the-art research and fostering cross-disciplinary collaboration in this rapidly evolving field. Your contributions are invaluable in shaping the future of metasurface technologies and their transformative impact on science and industry.

Dr. Giuseppe Brunetti
Dr. Muhammad Ali Butt
Guest Editors

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Keywords

  • dielectric metasurface
  • imaging
  • sensing
  • communications technologies
  • beamforming
  • beamsteering
  • dielectric antenna

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Published Papers (1 paper)

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Research

15 pages, 3428 KiB  
Article
An Enhanced Circularly Polarized Textile Antenna Using a Metasurface and Slot-Patterned Ground for Off-Body Communications
by Yong-Deok Kim, Tu Tuan Le and Tae-Yeoul Yun
Micromachines 2025, 16(7), 799; https://doi.org/10.3390/mi16070799 - 9 Jul 2025
Viewed by 415
Abstract
This paper presents an enhanced circularly polarized (CP) all-textile antenna using a metasurface (MS) and slot-patterned ground (SPG) for 5.8 GHz industry, scientific, and medical (ISM)-band applications in off-body communications. The 3 × 3 MS, capable of converting the incident wave into an [...] Read more.
This paper presents an enhanced circularly polarized (CP) all-textile antenna using a metasurface (MS) and slot-patterned ground (SPG) for 5.8 GHz industry, scientific, and medical (ISM)-band applications in off-body communications. The 3 × 3 MS, capable of converting the incident wave into an orthogonal direction with equal magnitude and a 90° phase difference, converts the linearly polarized (LP) wave, radiated from the fundamental radiator with a corner-truncated slot square-patch configuration, into being CP. The SPG, consisting of periodic slots with two different sizes of corner-truncated slots, redistributes the surface current on the ground plane, enhancing the axial ratio bandwidth (ARBW) of the proposed antenna. The novel combination of MS and SPG not only enables the generation and enhancement of CP characteristics but also significantly improves the impedance bandwidth (IBW), gain, and radiation efficiency by introducing additional surface wave resonances. The proposed antenna is composed of a conductive textile and a felt substrate, offering comfort and flexibility for applications where the antenna is placed in close proximity to the human body. The proposed antenna is simulated under bending in various directions, showing exceptionally similar characteristics to a flat condition. The proposed antenna is fabricated and is then verified by measurements in both free space and a human body environment. The measured IBW is 36.3%, while the ARBW is 18%. The measured gain and radiation efficiency are 6.39 dBic and 64.7%, respectively. The specific absorption rate (SAR) is simulated, and the results satisfy both US and EU safety standards. Full article
(This article belongs to the Special Issue Metasurface-Based Devices and Systems)
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