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The authors utilize line shaping of localized oscillations in a coupled resonant system for applications in acoustic energy transformation. Perfect control over a scattering wave front is provided by an acoustic metamaterial consisting of an array of two types of cavities. The dispersion properties of binary cells are utilized to build a flat metascreen with nearly lossless spatial-filtering characteristics. The exceptional dispersive effects are also extended to build a tunable metascreen capable of constructing virtual-scattering and carpet-cloaking objects.
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Amin et al. (2018) studied this question.
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