Complete mode conversion for elastic waves reflected by elastic metamaterial slab with double hexapole resonances
Applied Physics
2023-08-07 v1
Abstract
In this study, we investigate the phenomenon of mode conversion in elastic bulk waves using coupled hexapole resonances. A metamaterial slab is proposed enabling the complete conversion between longitudinal and transverse modes. Each unit of the elastic metamaterial slab comprises a pair of scatterers, and their relative direction is oriented at an oblique angle. The interaction between the coupled hexapoles and the background results in oblique displacements, which are responsible for the mode conversion. Moreover, this conversion exhibits a broader frequency range compared to the quadrupole resonance. This innovative design significantly broadens the range of possibilities for developing mode-converting metamaterials.
Keywords
Cite
@article{arxiv.2308.01969,
title = {Complete mode conversion for elastic waves reflected by elastic metamaterial slab with double hexapole resonances},
author = {Di Liu and Wenjie Yu and Qiujiao Du and Fengming Liu and Pai Peng},
journal= {arXiv preprint arXiv:2308.01969},
year = {2023}
}