Acoustically actuated ultra-compact NEMS magnetoelectric antennas

Tianxiang Nan, Hwaider Lin, Yuan Gao, Alexei Matyushov, Guoliang Yu, Huaihao Chen, Neville Sun, Shengjun Wei, Zhiguang Wang, Menghui Li, Xinjun Wang, Amine Belkessam, Rongdi Guo, Brian Chen, James Zhou, Zhenyun Qian, Yu Hui, Matteo Rinaldi, Michael E. McConney, Brandon M. Howe, Zhongqiang Hu, John G. Jones, Gail J. Brown and Nian Xiang Sun ()
Additional contact information
Tianxiang Nan: Northeastern University
Hwaider Lin: Northeastern University
Yuan Gao: Northeastern University
Alexei Matyushov: Northeastern University
Guoliang Yu: Northeastern University
Huaihao Chen: Northeastern University
Neville Sun: Northeastern University
Shengjun Wei: Northeastern University
Zhiguang Wang: Northeastern University
Menghui Li: Northeastern University
Xinjun Wang: Northeastern University
Amine Belkessam: Northeastern University
Rongdi Guo: Northeastern University
Brian Chen: Northeastern University
James Zhou: Northeastern University
Zhenyun Qian: Northeastern University
Yu Hui: Northeastern University
Matteo Rinaldi: Northeastern University
Michael E. McConney: Air Force Research Laboratory
Brandon M. Howe: Air Force Research Laboratory
Zhongqiang Hu: Air Force Research Laboratory
John G. Jones: Air Force Research Laboratory
Gail J. Brown: Air Force Research Laboratory
Nian Xiang Sun: Northeastern University

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract State-of-the-art compact antennas rely on electromagnetic wave resonance, which leads to antenna sizes that are comparable to the electromagnetic wavelength. As a result, antennas typically have a size greater than one-tenth of the wavelength, and further miniaturization of antennas has been an open challenge for decades. Here we report on acoustically actuated nanomechanical magnetoelectric (ME) antennas with a suspended ferromagnetic/piezoelectric thin-film heterostructure. These ME antennas receive and transmit electromagnetic waves through the ME effect at their acoustic resonance frequencies. The bulk acoustic waves in ME antennas stimulate magnetization oscillations of the ferromagnetic thin film, which results in the radiation of electromagnetic waves. Vice versa, these antennas sense the magnetic fields of electromagnetic waves, giving a piezoelectric voltage output. The ME antennas (with sizes as small as one-thousandth of a wavelength) demonstrates 1–2 orders of magnitude miniaturization over state-of-the-art compact antennas without performance degradation. These ME antennas have potential implications for portable wireless communication systems.

Date: 2017
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DOI: 10.1038/s41467-017-00343-8

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