Acoustic Resonant States on the Interface between Density-negative and Modulus-negative Metamaterial

作者：Lee Myeung Hee^*; Jung Myoung Ki; Lee Sam Hyeon; Nikitov S A

来源：Journal of the Korean Physical Society, 2012, 60(1): 31-33.

DOI：10.3938/jkps.60.31

• Resonant state
• Acoustic metamaterial
• Acoustic resonance

We observed resonant states on the interface between the acoustic metamaterials of negative effective mass density and negative effective modulus, which were based on membranes and side holes, respectively. All resonances excited by placing the driving pressure at different places have the same spatial pressure distribution and resonance frequency. The amplitude decayed exponentially on both sides of the interface. We present experimental results on the spatial and the spectral characteristics of the resonant states.

• 出版日期2012-1