Scattering-free modulation of elastic shear-horizontal waves based on interface impedance theory - Institut de Chimie du CNRS Access content directly
Journal Articles Physical Review Applied Year : 2024

Scattering-free modulation of elastic shear-horizontal waves based on interface impedance theory

Abstract

Elastic metasurfaces are mostly conceived and designed based on gradient phase and thus suffering from parasitic scattering. Inspired by the advances of surface impedance model in acoustics, in this research, we establish an interface impedance model to realize scattering-free modulation of elastic shear-horizontal (SH) waves. Anomalous refraction at large angle is successfully obtained through interface impedance. Meanwhile, focusing and Airy beam generation are also investigated, which are mostly achieved by phase-based structures. We provide lossless or lossy forms of impedance to suppress parasitic waves. The establishment of boundaries with different shapes has been discussed. Finally, the simulated results of elastic metasurfaces composed of optimized units further validates the feasibility of impedance theory in achieving precise manipulation of SH waves.
Fichier principal
Vignette du fichier
Manuscript.pdf (5.44 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-04276616 , version 1 (09-11-2023)

Identifiers

Cite

Mu Jiang, Yan-Feng Wang, Badreddine Assouar, Yue-Sheng Wang. Scattering-free modulation of elastic shear-horizontal waves based on interface impedance theory. Physical Review Applied, 2024, 20 (5), pp.054020. ⟨10.1103/PhysRevApplied.20.054020⟩. ⟨hal-04276616⟩
36 View
24 Download

Altmetric

Share

Gmail Facebook X LinkedIn More