Reconfigurable Elastic Metamaterials: Engineering Dispersion with Beyond Nearest Neighbors

被引：19
作者：
Chaplain, G. J. [1 ]
Hooper, I. R. [1 ]
Hibbins, A. P. [1 ]
Starkey, T. A. [1 ]
机构：
[1] Univ Exeter, Dept Phys & Astron, Ctr Metamaterial Res & Innovat, Exeter EX4 4QL, England
来源：
PHYSICAL REVIEW APPLIED | 2023年 / 19卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
NEGATIVE GROUP-VELOCITY; LAMB WAVES; REFRACTION;
D O I：
10.1103/PhysRevApplied.19.044061
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We design, simulate, and experimentally characterize a reconfigurable elastic metamaterial with beyond-nearest-neighbor (BNN) coupling. The structure is composed from the popular British model-construction system Meccano and supports backward waves with opposite directions of phase and group velocities. We experimentally verify three distinct configurations and acoustically infer their spatial vibration spectra.
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页数：9
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