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Mechanically Driven Magnetoelectric Antennas

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

Deadline for manuscript submissions: closed (20 November 2021) | Viewed by 2798

Special Issue Editors


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Guest Editor
Electrical and Computer Engineering Department, Northeastern University, Boston, MA, USA
Interests: magnetoelectric materials; magnetoelectric sensor concepts; magnetoelectric antennas
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Electrical Engineering, UCLA, Los Angeles, CA, USA
Interests: magnetoelectric antennas; digital microwave

Special Issue Information

Dear Colleagues,

Antenna miniaturization has been studied extensively for decades, and is still a challenge in wireless communication. In recent years, the antenna community has witnessed considerable progress in antenna miniaturization because of the impetus provided by the internet of things (IoT), radio frequency identification devices (RFIDs), and implantable medical devices (IMDs). A novel ultra-compact antenna concept based on mechanically driven magnetoelectric (ME) antennas has drawn a large amount of interest in recent years. By utilizing the acoustic wave resonance due to the ME effect instead of relying on electromagnetic wave resonance, the proposed ME antennas with a ferromagnetic/piezoelectric thin-film heterostructure could be miniaturized by 1–2 orders of magnitude.

This Special Issue aims to present recent developments in ME antennas based on magnetoelectric heterostructures, including but not limited to:

  • MEMS and NEMS devices;
  • Bulk and thin-film ME heterostructures;
  • Theoretical modelling and simulation;
  • Magnetic field sensing;
  • Biomedical and other applications.

Prof. Dr. Nian X. Sun
Prof. Ethan Wang
Guest Editors

Manuscript Submission Information

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Keywords

  • multiferroics
  • magnetoelectrics
  • mechanical antennas
  • magnetic sensors
  • MEMS

Published Papers (1 paper)

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Research

15 pages, 1137 KiB  
Article
Analysis of Dynamic Magnetoelastic Coupling in Mechanically Driven Magnetoelectric Antennas
by Kevin Q. T. Luong and Yuanxun (Ethan) Wang
Sensors 2022, 22(2), 455; https://doi.org/10.3390/s22020455 - 7 Jan 2022
Cited by 13 | Viewed by 2225
Abstract
Mechanically driven magnetoelectric antennas are a promising new technology that enable a reduction in antenna size by many orders of magnitude, as compared to conventional antennas. The magnetoelastic coupling in these antennas, a phenomenon playing a direct role in determining performance, has been [...] Read more.
Mechanically driven magnetoelectric antennas are a promising new technology that enable a reduction in antenna size by many orders of magnitude, as compared to conventional antennas. The magnetoelastic coupling in these antennas, a phenomenon playing a direct role in determining performance, has been modeled using approaches that are severely lacking in both accuracy and tractability. In response to this problem, we take a physics-based approach to the analysis of magnetoelastic coupling. We find that certain directions of applied stress will maximize the coupling and we derive general expressions to quantify it. Our results are applied in comprehensive simulations that demonstrate the dynamic nature of the coupling as well as the impact of various operating conditions and material properties. Our work contributes analytical expressions and associated insight that can serve not only as guidelines for the design of mechanically driven magnetoelectric antennas, but also as stepping stones towards the development of more accurate models. Full article
(This article belongs to the Special Issue Mechanically Driven Magnetoelectric Antennas)
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