Broadband unidirectional invisibility for airborne sound
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DOI: 10.1063/1.5019771
Abstract: We present a metafluid-based broadband cloak capable of guiding acoustic waves around obstacles along given directions while maintaining the wavefront undisturbed. The required parameter distribution of the proposed cloak is derived by coordinate transformation and… read more here.
Keywords: invisibility airborne; unidirectional invisibility; airborne sound; metafluid ... See more keywords
Exactness of the Born approximation and broadband unidirectional invisibility in two dimensions
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DOI: 10.1103/physreva.100.053846
Abstract: Achieving exact unidirectional invisibility in a finite frequency band has been an outstanding problem for many years. We offer a simple solution to this problem in two dimensions that is based on our solution to… read more here.
Keywords: two dimensions; unidirectional invisibility; born approximation; broadband unidirectional ... See more keywords