Backward Phase Matching for Second Harmonic Generation in Negative‐Index Conformal Surface Plasmonic Metamaterials
Sign Up to like & getrecommendations! Published in 2018 at "Advanced Science"
DOI: 10.1002/advs.201800661
Abstract: Abstract Backward phase matching, which describes counterpropagating fundamental and harmonic waves in a negative‐index medium, is one of the most intriguing phenomena in nonlinear metamaterials. Predicted theoretically decades ago, however, it is still a challenging… read more here.
Keywords: surface; backward phase; negative index; geometry ... See more keywords
Spatio-temporal instability in negative index materials
Sign Up to like & getrecommendations! Published in 2019 at "Optik"
DOI: 10.1016/j.ijleo.2019.05.062
Abstract: Abstract In this paper, we investigate spatiotemporal instability in negative index materials (NIMs) made of split ring resonators and arrays of wires embedded in a Kerr medium. The pulse propagation in NIM is modeled by… read more here.
Keywords: instability; index materials; instability negative; spatio temporal ... See more keywords
Optical solitons in nonlinear negative-index materials with quadratic-cubic nonlinearity
Sign Up to like & getrecommendations! Published in 2017 at "Superlattices and Microstructures"
DOI: 10.1016/j.spmi.2017.05.016
Abstract: Abstract This paper obtains bright and singular optical soliton solutions in nonlinear negative-index materials that appears with quadratic-cubic nonlinearity. The applied integration algorithm is the extended trial equation. Additional waves such as plane waves, periodic… read more here.
Keywords: quadratic cubic; negative index; index materials; cubic nonlinearity ... See more keywords
Enhanced Chiral Sensing at the Few-Molecule Level Using Negative Index Metamaterial Plasmonic Nanocuvettes.
Sign Up to like & getrecommendations! Published in 2022 at "ACS nano"
DOI: 10.1021/acsnano.2c08090
Abstract: Chirality is a fundamental property of biological molecules and some pharmaceutical molecules. Chiral molecules have a pair of chiral isomers (enantiomers) with opposite handedness. Although both enantiomers of the same molecule have identical chemical and… read more here.
Keywords: index metamaterial; negative index; molecule; absorption ... See more keywords
Impact of losses on the negative index behavior in a chiral dielectric and tradeoffs between dielectric and magnetic losses toward zero effective attenuation
Sign Up to like & getrecommendations! Published in 2020 at "Optical Engineering"
DOI: 10.1117/1.oe.59.11.117106
Abstract: Abstract. Negative refractive index is introduced in metamaterials whereby the Poynting vector of the electromagnetic (EM) wave is in opposition to the group velocity, or alternatively, when the group and phase velocities in the medium… read more here.
Keywords: dielectric magnetic; index; negative index; magnetic losses ... See more keywords
Non-Hermitian guided modes and exceptional points using loss-free negative-index materials.
Sign Up to like & getrecommendations! Published in 2023 at "Optics express"
DOI: 10.1364/oe.487278
Abstract: We analyze the guided modes in coupled waveguides made of negative-index materials without gain or loss. We show that it supports non-Hermitian phenomenon on the existence of guided mode versus geometric parameters of the structure.… read more here.
Keywords: non hermitian; loss; negative index; guided modes ... See more keywords
Optical waveguide switch based on a negative-index metamaterial load.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.480020
Abstract: An optical switch concept is presented which involves moving a negative-index metamaterial (NIM) load, possibly with loss, close to one waveguide in a two-waveguide directional coupler. The NIM load limits the number of optical modes… read more here.
Keywords: index; waveguide; index metamaterial; switch ... See more keywords
Subwavelength negative-index waveguiding enabled by coupled spoof magnetic localized surface plasmons
Sign Up to like & getrecommendations! Published in 2019 at "Photonics Research"
DOI: 10.1364/prj.7.000274
Abstract: Magnetic localized surface plasmon modes are supported on metallic spiral structures. Coupling mechanisms for these metamaterial resonators, which are the joint action of magnetic and electric coupling, are studied. Based on the strong coupling, spoof… read more here.
Keywords: spoof magnetic; magnetic localized; localized surface; negative index ... See more keywords
Outcomes of a model for re-testing HIV-negative index contacts in Sedibeng, South Africa
Sign Up to like & getrecommendations! Published in 2023 at "Southern African Journal of HIV Medicine"
DOI: 10.4102/sajhivmed.v24i1.1482
Abstract: Background: Index contact testing is an HIV case-finding approach that elicits sexual or needle-sharing partners, as well as biological children, of people living with HIV (PLHIV) and offers them HIV testing services.Objectives: We aim to describe the… read more here.
Keywords: index; hiv; negative index; testing hiv ... See more keywords