Papers
Release Time: 2025-04-30Hits:
- Date:2025-04-30
- Title of Paper:A thin multi-order Helmholtz metamaterial with extraordinary perfect acoustic absorption within 400 Hz – 2800 Hz
- Journal:Appl. Phys. Exp.
- Summary:We propose a multi-order Helmholtz metamaterial with deep-subwavelength thickness in which perfect continuous acoustic absorption is achieved
within 400 Hz ∼ 2800 Hz. The metamaterial is composed of multiple detuned cells, each of which is constructed by several perforated plates
inserting into the cavity of a Helmholtz resonator (HR) and hence gains multiple individually-tuned high-order peaks besides the original HR peak.
By precisely designing each peak of the cells, the extra-broadband perfect absorption can be obtained. This kind of metamaterials could possess
broad applications in noise control engineering owing to the extraordinary absorption performance and high flexural stiffness. - Co-author:Chong Rui Liu, Jiu Hui Wu
- Volume:Vol.12, 2019
- Page Number:084002 (4 Pages)
- Translation or Not:No
- Date of Publication:2019-07-01
