Abstract:Because of the limited sound insulation provided by a single material, it is common to use multiple layers of materials to improve the effects of sound insulation, but multiple materials increase the size of the model. In some cases, there are limits to the size of the model, or, if subwavelength sizes are required, it is necessary to investigate wideband sound insulation of subwavelength size. We designed a coded topological spherical model on the subwavelength scale, with two materials arranged periodically … Show more
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