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Special Issue "Electromagnetic Structures for Sensing Applications"

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: 31 July 2022.

Special Issue Editor

Dr. Boon-Chong Seet
E-Mail Website
Guest Editor
Department of Electrical and Electronic Engineering, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand
Interests: 5G wireless communications; antennas and radio frequency based sensors; smart textile and wearable technologies
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue solicits original research and review articles on recent advances in the development of novel electromagnetic structures for sensing applications. Electromagnetic structures such as antennas, frequency selective surfaces, electromagnetic band gaps, and split ring resonators can function as sensors when their properties can be engineered to react to external stimuli, including physical, chemical, and biological stimuli. High sensing resolution often necessitates the use of electromagnetic waves of short wavelength. Thus, these structures tend to be designed for operating at the high frequency end of the spectrum ranging from microwaves to optical frequencies. These same structures can also perform or enhance the non-sensing function in sensors such as signal transmission and reception for radar and wireless sensors. Topics of interest include but are not limited to:

  • Microwave/millimeter-wave antennas and arrays for sensing applications;
  • Optical frequency antennas and arrays for sensing applications;
  • Frequency selective surfaces for sensing applications;
  • Electromagnetic band gaps for sensing applications;
  • Split ring resonators for sensing applications.

The applications of interest include but not limited to:

  • Human physiological sensing;
  • Structural health monitoring;
  • Crop health monitoring;
  • Food safety analysis;
  • Medical imaging.
Dr. Boon-Chong Seet
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 papers will be 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. Sensors 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 2200 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

  • Electromagnetic
  • Sensor
  • Microwave
  • Millimeter-wave
  • Optical frequency
  • Antenna
  • Frequency selective surface
  • Electromagnetic bandgap
  • Split ring resonator

Published Papers (2 papers)

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Research

Article
24 GHz Flexible Antenna for Doppler Radar-Based Human Vital Signs Monitoring
Sensors 2021, 21(11), 3737; https://doi.org/10.3390/s21113737 - 27 May 2021
Cited by 1 | Viewed by 827
Abstract
Noncontact monitoring of human vital signs has been an emerging research topic in recent years. A key approach to this monitoring is the use of the Doppler radar concept which enables real-time vital signs detection, resulting in a new class of radar system [...] Read more.
Noncontact monitoring of human vital signs has been an emerging research topic in recent years. A key approach to this monitoring is the use of the Doppler radar concept which enables real-time vital signs detection, resulting in a new class of radar system known as bio-radar. The antennas are a key component of any bio-radar module and their designs should meet the common requirements of bio-radar applications such as high radiation directivity and mechanical flexibility. This paper presents the design of a four-element antenna array on a flexible liquid crystal polymer (LCP) substrate of 100 μm thickness and εr of 3.35. The designed antenna array can be used with a 24 GHz bio-radar for vital signs monitoring in a non-contact manner. It features a relatively compact size of 36.5 × 53 mm2 and measured gain of 5.81 dBi. The two vital signs: breathing rate (BR) and heart rate (HR) of two human subjects are detected with relatively good accuracy using the fabricated antenna array and radio frequency (RF) output power of −3 dBm from a distance of approximately 60 cm. The effect of bending on the antenna performance is also analyzed. Full article
(This article belongs to the Special Issue Electromagnetic Structures for Sensing Applications)
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Communication
Electromagnetic Control by Actuating Kirigami-Inspired Shape Memory Alloy: Thermally Reconfigurable Antenna application
Sensors 2021, 21(9), 3026; https://doi.org/10.3390/s21093026 - 26 Apr 2021
Viewed by 574
Abstract
Electromagnetic responses are generally controlled electrically or optically. However, although electrical and optical control allows fast response, they suffer from switching or tuning range limitations. This paper controls electromagnetic response by mechanical transformation. We introduce a novel kirigami-inspired structure for mechanical transformation with [...] Read more.
Electromagnetic responses are generally controlled electrically or optically. However, although electrical and optical control allows fast response, they suffer from switching or tuning range limitations. This paper controls electromagnetic response by mechanical transformation. We introduce a novel kirigami-inspired structure for mechanical transformation with less strength, integrating a shape memory alloy actuator into the kirigami-inspired for mechanical transformation and hence electromagnetic control. The proposed approach was implemented for a reconfigurable antenna designed based on structural and electromagnetic analyses. The mechanical transformation was analyzed with thermal stimulus to predict the antenna geometry and electromagnetic analysis with different geometries predicted antenna performance. We numerically and experimentally verified that resonance response was thermally controlled using the kirigami-inspired antenna integrated with a shape memory alloy actuator. Full article
(This article belongs to the Special Issue Electromagnetic Structures for Sensing Applications)
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