吴九汇的个人主页空间 - 吴 九汇
| Paper Name | A thin multi-order Helmholtz metamaterial with extraordinary perfect acoustic absorption within 400 Hz – 2800 Hz |
| Author | Chong Rui Liu, Jiu Hui Wu |
| Publication/Completion Time | 2019-07-01 |
| Magazine Name | Appl. Phys. Exp. |
| Vol | Vol.12, 2019 |
| Related articles | Liu_2019_Appl._Phys._Express_A thin multi-order Helmholtz metamaterial with perfect broadbandacoustic absorption.pdf |
| Paper description | 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. |
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