Three-dimensional acoustic sub-diffraction focusing by coiled metamaterials with strong absorption
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Materials Chemistry C"
DOI: 10.1039/c9tc01243e
Abstract: The diffraction limit restricts the smallest diameter of a wave's focal spot in a homogeneous medium to no less than half of the operating wavelength. read more here.
Keywords: acoustic sub; diffraction focusing; three dimensional; diffraction ... See more keywords
Three-Dimensional Acoustic Double-Zero-Index Medium with a Fourfold Degenerate Dirac-like Point.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.124.074501
Abstract: We report the first realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM) made of a cubic lattice of metal rods. While the past decade has seen several realizations of 2D DZIM, achieving such a… read more here.
Keywords: double zero; medium; zero index; acoustic double ... See more keywords
Three dimensional acoustic parabolic equation based on Chisholm approximation with the splitting denominator
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.4987668
Abstract: We propose the generalized form of three dimensional acoustic parabolic equation (3DPE) based on Chisholm approximation [Chisholm, Math. Comp. 27, 841-848 (1973)] of a rational approximant for two variables, and the splitting denominator assumption. The… read more here.
Keywords: three dimensional; acoustic parabolic; parabolic equation; splitting denominator ... See more keywords