...Ruojun Zhang; Lei Zhang; Gengkai Hu; Xiaoming Zhou Space-coiling acoustic metamaterials dominated by the Fano resonance are being widely exploited for simultaneous control of sound isolation and air ventilation, and they usually achieve complete sound mitigation at multiple isolated frequencies...

.... The analysis presented can be extended to multi-dimensional phononic crystals and acoustic metamaterials. Our findings can be used to guide the design of periodic beam structures in a range of applications ranging from aerospace load-bearing structures to MEMS components used for frequency sensing...