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Negative-dynamic-mass response without localized resonance

  • 发布时间:2020-05-20
  • 点击次数:
  • 发表刊物:EPL (Europhysics Letters)
  • 摘要:We propose a new mechanism to achieve negative-dynamic-mass response. The system consists of a water-immersed soft solid plate patterned with periodical heavy gratings. The negative dynamic mass stems from collective excitations of the coupled acoustic surface waves in the thin plate, but not from local resonances as usual. A simple spring-mass model is further applied to understand this exotic phenomenon. Extensive applications of the new mechanism can be anticipated, such as in designing acoustic metamaterials with negative indices.
  • 卷号:91
  • 期号:5
  • 页面范围:54004
  • 是否译文:
  • 发表时间:2010

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