Mechanical metamaterials for full-band mechanical wave shielding
Mechanical metamaterials for full-band mechanical wave shielding
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DOI：
10.1016/j.apmt.2020.100671
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发表时间：
2020-09
影响因子：
8.3
通讯作者：
Lingling Wu;Yong Wang;Zirui Zhai;Yi Yang;Deepakshyam Krishnaraju;Junqiang Lu;Fugen Wu;Qianxuan Wang-Qi
中科院分区：
文献类型：
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作者：
Lingling Wu;Yong Wang;Zirui Zhai;Yi Yang;Deepakshyam Krishnaraju;Junqiang Lu;Fugen Wu;Qianxuan Wang-Qi
操纵物质与波之间的相互作用是超材料的中心主题。尚未实现全频段的能量屏蔽能力。在本文中，通过一种新机制，通过在超材料和能源之间仅循环能量，发现了一种具有完美能量屏蔽的机械超材料。在低和超低振动频率范围内通过实验证明了前所未有的能量屏蔽效应。连同广泛探索的机制，即“能量旁路”和“能量吸收”机制，本文中的“能量屏蔽”机制和演示的机械超材料为在不同长度尺度的各种物理系统中具有前所未有的动态特性的超材料的设计开辟了新的方向。
The manipulation of the interactions between matter and waves is the central theme of metamaterials. The capability of energy shielding in a full frequency band has not yet been achieved. In this paper, a mechanical metamaterial for perfect energy shielding was discovered through a new mechanism by solely circulating energy between a metamaterial and an energy source. Unprecedented energy shielding effects are experimentally demonstrated in low and ultralow vibrational frequency ranges. Along with the widely explored mechanisms, namely, the “energy bypass” and “energy absorption” mechanisms, the “energy shield” mechanism and demonstrated mechanical metamaterial in this paper open a new direction for the design of metamaterials with unprecedented dynamic characteristics in various physical systems at different length scales.