Optical fishnet metamaterial with negative, zero, positive refractive index and nearly perfect absorption behavior at different frequencies
Sign Up to like & getrecommendations! Published in 2019 at "Optik"
DOI: 10.1016/j.ijleo.2019.01.066
Abstract: Abstract Metamaterials (MMs) have many novel characteristics with the aid of appropriate structural design. In this study, we report negative refractive index (NRI), zero refractive index (ZRI) and nearly perfect absorption (NPA) characteristics of an… read more here.
Keywords: refractive index; optical fishnet; perfect absorption; nearly perfect ... See more keywords
Integrating polarization conversion and nearly perfect absorption with multifunctional metasurfaces
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4982240
Abstract: Manipulating electromagnetic waves with artificial nanostructures has garnered great interest for their properties and potential applications. However, existing devices performing various desired operations at different wavelengths usually require cascading with different geometry patterns, which does… read more here.
Keywords: nearly perfect; perfect absorption; polarization conversion; conversion ... See more keywords
VO2–graphene-integrated hBN-based metasurface for bi-tunable phonon-induced transparency and nearly perfect resonant absorption
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/abecb2
Abstract: A bi-tunable hexagonal boron nitride (hBN)-based metasurface with bi-functional phonon-induced transparency (PIT) and nearly perfect resonant absorption features in the mid-infrared (MIR) range is proposed. The metasurface, that is composed of axially symmetric hBN rings,… read more here.
Keywords: absorption; hbn based; based metasurface; nearly perfect ... See more keywords
Unimodular Perfect and Nearly Perfect Sequences: a Variation of Björck’s Scheme
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Information Theory"
DOI: 10.1109/tit.2022.3228166
Abstract: Constant Amplitude (CA), Zero Auto Correlation (ZAC) sequences (or CAZAC sequences, aka perfect sequences) have numerous applications. We generalize the CAZAC notion to what we term as CASAC by permitting small autocorrelations (SAC). We extend… read more here.
Keywords: variation rck; nearly perfect; perfect sequences; sequences variation ... See more keywords
Nearly perfect transmission of unpolarized infrared radiation through a one-dimensional metal grating embedded in a monolithic high-contrast grating.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.411112
Abstract: We demonstrate a conceptually simple polarization-independent mechanism for nearly perfect infrared light transmission through a subwavelength one-dimensional metal grating implemented in the grooves of a deep-subwavelength monolithic high-contrast grating (metalMHCG). We provide theoretical background explaining… read more here.
Keywords: metal grating; contrast; transmission; one dimensional ... See more keywords