超材料
声学
消声室
声学超材料
宽带
吸收(声学)
材料科学
消散
噪声控制
噪音(视频)
降噪
光学
物理
光电子学
计算机科学
图像(数学)
人工智能
热力学
作者
Xue Jiang,Bin Liang,Ruiqi Li,Xin‐Ye Zou,Leilei Yin,Jian‐Chun Cheng
摘要
We design and experimentally realize an ultra-broad band metamaterial-based acoustic absorption material. Unlike traditional acoustic absorbers, the designed device features a simple configuration unrestricted by the material type and does not require extra sound-absorbing materials, suggesting the potential to have simultaneously structural-stiffness and environmental-friendliness. Analytical analyses are provided to explain such distinct characteristics, which are revealed to stem from the localization and dissipation of waves with different frequencies at particular spatial positions. This is also demonstrated both numerically and experimentally. Our results may offer possible designs for various applications such as noise reduction and making underwater anechoic materials.
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