Aug 2026· Metamaterials· pp. 108-110· 0 citations· 4 references
Abstract
Recent research in optical, electromagnetic, and acoustical metamaterials has shown that spatiotemporal modulation of bulk properties and of interfaces between material domains can be used for unprecedented control of wave propagation and scattering. Spatiotemporal modulation of bulk properties has been used to enable nonreciprocal wave propagation in unbounded systems and to couple modes at different frequencies in bounded systems through frequency and wavenumber conversion. This work employs a Fourier series expansion-based coupled mode approach to investigate coupling between guided wave modes in an acoustic waveguide with different frequency-wavenumber pairs using spatiotemporal modulation of a single boundary. Results demonstrate the ability to couple incident plane waves to non-radiating (trapped) modes and to generate radiation from incident evanescent fields.
In this work, we focus on the interface response theory based on Green's function in order to examine the propagation of electromagnetic waves through a symmetrical loop composed of different optical materials. Numerical results show the emergence of transmission very/large zeros modes (TZs) at specific reduced frequen...
Abdelouahid Ezzarfi, M. El-Aouni, Y. Benali et al.· Advanced Engineering Forum· 0 citations
This paper investigates wave scattering phenomena, specifically reflection and transmission amplitudes, for plane waves incident on cascading junctions and cavities. The research emphasizes on the impact of discontinuities applied to corrugated waveguides. Additionally, the extraordinary acoustic transmission (EAT) phe...
H. Ali, Mahmood-ul Hassan, Gawhara AI-Musannef· Journal of Low Frequency Noi...· 0 citations
The coherent interaction between magnons and surface acoustic waves (SAWs) offers a powerful route for controlling magnetic dynamics, benefiting from the short wavelengths, low losses, and high integrability of SAWs in on-chip platforms. This review summarizes recent progress in SAW–magnon coupling, emphasizing selec...
Li-Yang Liao, Y. Otani· Applied Physics Express· 0 citations
Waves described by Bessel functions of different orders have recently attracted widespread attention. Owing to their potential to provide additional available channels in acoustic communications. Their orthogonality in the azimuthal plane enables spatial multiplexing at a given frequency. The number of available channe...
Yu-Ze Tian, Zhuo-Run Wei, Yan-Feng Wang et al.· MechanoEngineering· 0 citations
The curved nonlinear internal waves (NIWs) commonly found in shallow-water ocean regions can have significant effects on acoustic propagation. Energy trapped in ducts between waves can be carried over distances of tens of kilometers or more. A three-dimensional feature model for curved NIWs with finite-width waves can...
Matthew A. Milone, Ying-Tsong Lin, W. Siegmann· Journal of the Acoustical So...· 0 citations
Photonic temporal interfaces enable dynamic control of light fields, yet strong time reflection at optical frequencies remains challenging because conventional approaches demand large material refractive-index changes on ultrafast timescales. Here, we introduce a resonance-assisted mechanism that harnesses both polariz...
Ze-Yuan Li, Hammam Bahurmuz, M. Mostafa et al.· 1 citation
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