Flexural Vibration Magnetoelectric Antenna for Medium Frequency and High Frequency

Liu, Yizhang; Zeng, Zhongming; Lin, Wenfang; Yun, Xiaofan; Zha, Qiang; Zhang, Baoshun

doi:10.1080/10584587.2022.2143200

Integrated Ferroelectrics

2022

DOI: 10.1080/10584587.2022.2143200

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Flexural Vibration Magnetoelectric Antenna for Medium Frequency and High Frequency

Yizhang Liu

Zhongming Zeng

Wenfang Lin

et al.

Abstract: First, the coupling coefficient of two-dimensional beam is derived, and then, the results are extended to plate structure. The strain distribution in beam of P and M can be expressed as

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2024

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Cited by 2 publications

References 34 publications

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Flexible Magnetoelectric Nanomaterials for Healthcare Devices: A Minireview

Liang,

Li,

Pan

et al. 2024

ACS Appl. Nano Mater.

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Magnetoelectric (ME) nanomaterials are materials that generate an electric field under an applied DC or AC magnetic field. Their unique ability for this ME conversion endows them significant potential in energy harvesting, storage, healthcare, and other domains. However, the mechanical mismatch between traditional rigid ME nanomaterials and soft biological tissues has posed considerable challenges. Flexible wearable devices, renowned for their excellent conformability to biological tissues, find wide applications in fields such as health monitoring and wireless communication. Hence, integrating ME nanomaterials with flexible wearable devices emerges as a crucial endeavor. Yet, there remains a dearth of comprehensive reviews in the realm of flexible ME nanomaterials. This review provides an overview of the latest achievements in flexible ME nanomaterials utilized in healthcare, encompassing their brief history, underlying principles, materials employed, applications, and prospects for future development.

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Flexible Magnetoelectric Nanomaterials for Healthcare Devices: A Minireview

Liang,

Li,

Pan

et al. 2024

ACS Appl. Nano Mater.

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Performance analysis of acoustically actuated magnetoelectric antennas via equivalent circuit method

Du,

Qiao,

et al. 2024

Journal of Applied Physics

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Acoustically actuated magnetoelectric (ME) antennas based on resonant magnetoelectric coupling within ferromagnetic/piezoelectric ME laminated composites have recently been considered as a promising solution for antenna miniaturization. However, its radiation performance has been theoretically overestimated, since the negative effects on performances due to the magnetization saturation and the nonlinear mechanical behavior that occur from high-field driving have not been paid enough attention. This work presents a unique equivalent-circuit-based numerical method to analyze the near-field resonance radiation performances of ME antennas driven by high electric fields. In this method, we establish an equivalent circuit of the converse magnetoelectric effect for a ME laminated composite to describe the operating principle of acoustically actuated electromagnetic radiation. The equivalent parameters related to resonance characteristics are determined by fitting the circuit model to the data from frequency response measurements of the near-field magnetic flux density. The validity of the model is verified by comparing the theoretical predictions with the experimental results, in the view of the volume fraction dependence of the mechanical resonance-related radiation characteristics of the fabricated ME composites. Based on the proposed model, the influence of driving voltage amplitude on near-field radiation performances is further analyzed by experimental fitting to the model, and the potential limiting factors of ME antennas are discussed according to the driving-amplitude dependence of parameters obtained from the fit. This work provides an effective and engineering-friendly approach to predict the evolution of ME antenna performances, leading a way to improve the performance limit for resonant magnetoelectric coupling.

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Flexural Vibration Magnetoelectric Antenna for Medium Frequency and High Frequency

Abstract: First, the coupling coefficient of two-dimensional beam is derived, and then, the results are extended to plate structure. The strain distribution in beam of P and M can be expressed as

Cited by 2 publications

References 34 publications

Flexible Magnetoelectric Nanomaterials for Healthcare Devices: A Minireview

Flexible Magnetoelectric Nanomaterials for Healthcare Devices: A Minireview

Performance analysis of acoustically actuated magnetoelectric antennas via equivalent circuit method

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