Results 51 to 60 of about 13,320 (259)
Graphene: A Dynamic Platform for Electrical Control of Plasmonic Resonance
Nanophotonics, 2015 Graphene has recently emerged as a viable platform for integrated optoelectronic and hybrid photonic devices because of its unique properties. The optical properties of graphene can be dynamically controlled by electrical voltage and have ...
Emani Naresh Kumar +3 more
doaj +1 more source
Plasmonics in graphene at infra-red frequencies [PDF]
, 2009 We point out that plasmons in doped graphene simultaneously enable low-losses and significant wave localization for frequencies below that of the optical phonon branch $\hbar\omega_{Oph}\approx 0.2$ eV. Large plasmon losses occur in the interband regime (
Hrvoje Buljan +3 more
core +4 more sources
A Surface Plasmon–Polariton in a Symmetric Dielectric Waveguide with Active Graphene Plates
Photonics, 2022 A theoretical study of the plasmon modes’ characteristics is carried out in a structure consisting of two active graphene layers separated by a dielectric barrier layer.
Dmitry A. Evseev +3 more
doaj +1 more source
Nonequilibrium plasmons with gain in graphene
, 2015 Graphene supports strongly confined transverse-magnetic sheet plasmons whose spectral characteristics depend on the energetic distribution of Dirac particles.
Ballout, Fouad +3 more
core +1 more source
Localized plasmons in graphene-coated nanospheres [PDF]
, 2014 We present an analytical derivation of the electromagnetic response of a spherical object coated by a conductive film, here exemplified by a graphene coating.
Christensen, Thomas +3 more
core +2 more sources
Plasmon excitations for encapsulated graphene [PDF]
Journal of Physics D: Applied Physics, 2016 We have developed an analytical formulation to calculate the plasmon dispersion relation for a two-dimensional layer which is encapsulated within a narrow spatial gap between two bulk half-space plasmas. This is based on a solution of the inverse dielectric function integral equation within the random-phase approximation (RPA). We take into account the
Gumbs, Godfrey +3 more
openaire +2 more sources
Hybrid Graphene-Supported Aluminum Plasmonics
ACS Nano, 2022 Controlled fabrication of devices for plasmonics on suspended graphene enables obtaining tunable localized surface plasmon resonances (LSPRs), reducing the red-shift of LSPRs, and creating hybrid 3D-2D systems promising for adjustable dipole-dipole coupling and plasmon-mediated catalysis.
Elibol, Kenan, van Aken, Peter A.
openaire +2 more sources
Light‐Controlled Reversible Coassembly of Hybrid Functional Nanostructures
Advanced Functional Materials, EarlyView.Light‐responsive hybrid nanostructures are formed by coassembling azobenzene‐ and PAH‐functionalized nanoparticles through reversible an tunable π interactions. The system enables tunable coupling between distinct components such as gold and magnetite or carbon nanotubes, producing switchable optical and magnetic properties under light and magnetic ...
Michal Sawczyk +5 more
wiley +1 more source
Chiral plasmons without magnetic field [PDF]
, 2016 Plasmons, the collective oscillations of interacting electrons, possess emergent properties that dramatically alter the optical response of metals. We predict the existence of a new class of plasmons -- chiral Berry plasmons (CBPs) -- for a wide range of
Rudner, Mark S., Song, Justin C. W.
core +3 more sources
Advanced Functional Materials, EarlyView.Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth +8 more
wiley +1 more source