Negative refraction of water waves by hyperbolic metamaterials
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.220
Abstract: Abstract We study the propagation of water waves in a three-dimensional device alternating open canals and resonant canals with subwavelength resonances. The dispersion of water waves in such a medium is obtained by analysing the… read more here.
Keywords: refraction water; water; water waves; negative refraction ... See more keywords
Negative Reflection and Negative Refraction in Biaxial van der Waals Materials.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c02073
Abstract: Negative reflection and negative refraction are exotic phenomena that can be achieved by platforms such as double-negative metamaterial, hyperbolic metamaterial, and phase-discontinuity metasurface. Recently, natural biaxial van der Waals (vdW) materials, which support extremely anisotropic,… read more here.
Keywords: negative reflection; reflection negative; refraction; negative refraction ... See more keywords
Atomic-Scale Confinement and Negative Refraction of Plasmons by Twisted Bilayer Graphene.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c03220
Abstract: Moiré superlattices provide in-plane quantum restriction for light-matter interactions in twisted bilayer graphene (tBLG), leading to the exotic photon-Moiré physics and potential applications for light manipulation. Recently, our experiment identified a highly confined slow surface… read more here.
Keywords: atomic scale; bilayer graphene; negative refraction; twisted bilayer ... See more keywords
Topological negative refraction of surface acoustic waves in a Weyl phononic crystal
Sign Up to like & getrecommendations! Published in 2018 at "Nature"
DOI: 10.1038/s41586-018-0367-9
Abstract: Reflection and refraction of waves occur at the interface between two different media. These two fundamental interfacial wave phenomena form the basis of fabricating various wave components, such as optical lenses. Classical refraction—now referred to… read more here.
Keywords: phononic crystal; topological negative; negative refraction; weyl phononic ... See more keywords
Bidirectional acoustic negative refraction based on a pair of metasurfaces with both local and global PT-symmetries
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-67793-x
Abstract: Negative refraction plays an important role in acoustic wave manipulation and imaging. However, conventional systems based on acoustic metamaterials suffer from the limits induced by loss-related and resolution issues. In this work, a parity-time (PT)-symmetric… read more here.
Keywords: pair; negative refraction; acoustic negative; refraction based ... See more keywords
On ballistic transport in channels with negative refraction of particles
Sign Up to like & getrecommendations! Published in 2018 at "Low Temperature Physics"
DOI: 10.1063/1.5041438
Abstract: Ballistic transport is considered in a channel consisting of two layers under the assumption that the negative refraction of particles moving along the channel occurs on the boundary of the layers; this is similar to… read more here.
Keywords: negative refraction; ballistic transport; refraction particles; transport channels ... See more keywords
Prestress tuning of negative refraction and wave channeling from flexural sources
Sign Up to like & getrecommendations! Published in 2019 at "Applied Physics Letters"
DOI: 10.1063/1.5084258
Abstract: The quest for wave channeling and manipulation has driven a strong research effort on topological and architected materials, capable of propagating localized electromagnetical or mechanical signals. With reference to an elastic structural grid, which elements… read more here.
Keywords: negative refraction; tuning negative; wave channeling; prestress tuning ... See more keywords
Negative reflection, negative refraction and ray displacements in biaxial absorbing media, In4Se3
Sign Up to like & getrecommendations! Published in 2019 at "Waves in Random and Complex Media"
DOI: 10.1080/17455030.2019.1651462
Abstract: We show the existence of negative reflection and negative refraction in a slab of biaxial absorbing medium In4Se3 placed between two isotropic media. We find the limiting angle of incidence in the ... read more here.
Keywords: negative reflection; reflection negative; biaxial absorbing; negative refraction ... See more keywords
Prediction of negative refraction in Dirac semimetal metamaterial
Sign Up to like & getrecommendations! Published in 2022 at "Nanotechnology"
DOI: 10.1088/1361-6528/ac7ded
Abstract: Negative refraction materials are indispensable building blocks in the optoelectric devices for their unique functionalities of controlling the light propagations, such as, superlens and transformation optics. However, material realizations of negative refraction are still limited… read more here.
Keywords: refraction; three dimensional; negative refraction; dirac ... See more keywords
Negative refraction in hyperbolic hetero-bicrystals
Sign Up to like & getrecommendations! Published in 2022 at "Science"
DOI: 10.1126/science.adf1065
Abstract: We visualized negative refraction of phonon polaritons, which occurs at the interface between two natural crystals. The polaritons—hybrids of infrared photons and lattice vibrations—form collimated rays that display negative refraction when passing through a planar… read more here.
Keywords: interface two; refraction mid; refraction; polaritons occurs ... See more keywords
Gate-tunable negative refraction of mid-infrared polaritons
Sign Up to like & getrecommendations! Published in 2022 at "Science"
DOI: 10.1126/science.adf1251
Abstract: Negative refraction provides a platform to manipulate mid-infrared and terahertz radiation for molecular sensing and thermal emission applications. However, its implementation based on metamaterials and plasmonic media presents challenges with optical losses, limited spatial confinement,… read more here.
Keywords: mid infrared; refraction mid; refraction; negative refraction ... See more keywords