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A thin-walled cavity structure with double-layer tapered scatterer locally resonant metamaterial plates for extreme low-frequency attenuation

EngineeringDouble-layer Tapered ScattererAcoustic MetamaterialNegative-index MetamaterialAntennaApplied PhysicsMetamaterialsDynamic MetamaterialsThin-walled Cavity StructureResonant Metamaterial PlatesElectromagnetic Metamaterials