Unidirectional Extraordinary Sound Transmission with Mode-Selective Resonant Materials
Jie Zhu, Xuefeng Zhu, Xiaobo Yin, Yuan Wang, Xiang Zhang
Abstract
Realizing direction-dependent energy responses greatly benefits the construction of switching and logic devices. This study proposes an archetype for an acoustic resonant-tunneling diode, made of mode-selective resonant metamaterial. Using this material, the authors experimentally demonstrate a broadband, high contrast ratio and single-mode unidirectional sound tunneling. This result is expected to impact control methodology in biomedical ultrasonography, acoustic communication, sound identification, and noise control.
Topics & Concepts
BroadbandAcousticsNoise controlMetamaterialTransmission (telecommunications)Mode (computer interface)Materials scienceSound transmission classResonatorNoise (video)Energy (signal processing)Computer scienceTelecommunicationsOptoelectronicsPhysicsNoise reductionOperating systemArtificial intelligenceImage (mathematics)Quantum mechanicsAcoustic Wave Phenomena ResearchMetamaterials and Metasurfaces ApplicationsMicrowave Engineering and Waveguides