Non-resonant elastic metamaterials for broadband perfect mode conversion and negative reflection

Zhou Hu, Mingye Zheng, Kaijun Yi*, Rui Zhu*, Gengkai Hu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Reflection control of elastic wave is of great importance. Recently, reflective metasurfaces governed by the generalized Snell’s law offer a new degree of freedom to control the direction as well as the polarization of the reflected elastic waves. However, the underlining mechanism of the reflective metasurfaces is frequency-dependent, which significantly limits their practical applications. Here, we propose frequency-independent metamaterials called singly polarized solids (SPSs) for broadband reflection control of elastic waves. With the engineered SPSs, perfect mode conversion (PMC) and switching between positive reflection (PR) and negative reflection (NR) are achieved. Our work opens an approach to control the reflected elastic waves in a broad frequency range, and could find potential applications in structural health monitoring, nondestructive detection, and elastic wave devices. (Figure presented.)

Translated title of the contribution用于宽频完美模态转换和负反射的非谐振弹性超材料
Original languageEnglish
Article number123168
JournalActa Mechanica Sinica/Lixue Xuebao
Volume39
Issue number12
DOIs
Publication statusPublished - Dec 2023

Keywords

  • Mode conversion
  • Negative reflection
  • Non-resonant elastic metamaterials

Fingerprint

Dive into the research topics of 'Non-resonant elastic metamaterials for broadband perfect mode conversion and negative reflection'. Together they form a unique fingerprint.

Cite this