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Interface effects on the electromagnetic radiation emanating from an embedded piezoelectric nano-fiber incident upon by SH-waves

Taheri Jam, M ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.wavemoti.2020.102513
  3. Publisher: Elsevier B.V , 2020
  4. Abstract:
  5. The multiphysics process of the electromagnetic (EM) radiation induced from an embedded nanofiber scatterer subjected to SH-waves is of interest. By discarding the commonly employed electroquasistatic approximation, the fully-coupled elastodynamics and Maxwell's equations have been solved simultaneously within the mathematical framework of piezoelectric surface elasticity theory. Certain subtleties regarding the introduced interface characteristic lengths that make the examination of the size effect on the EM radiated power, scattering cross section, fundamental resonance frequency, and distribution of the magnetic field possible will be discussed. The obtained results can be helpful for designing electrically small antennas, sensors, and resonators using piezoelectric nanofibers. © 2020
  6. Keywords:
  7. Electromagnetic radiation ; Embedded piezoelectric nanofiber ; Fully-coupled electrodynamics ; Interface effect ; Electromagnetic wave emission ; Electromagnetic waves ; Maxwell equations ; Radiation effects ; Shear waves ; Electrically small antennas ; Fully-coupled ; Fundamental resonance frequency ; Interface characteristic ; Mathematical frameworks ; Piezoelectric nanofibers ; Scattering cross section ; Nanofibers ; Electrodynamics ; Magnetic field ; Piezoelectricity ; SH-wave
  8. Source: Wave Motion ; Volume 94 , April , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0165212519302963