Finite-size effects on periodic arrays of nanostructures

Zundel, Lauren; Manjavacas, Alejandro

doi:10.1088/2515-7647/aae8a2

Cited by 62 publications

(75 citation statements)

References 64 publications

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“…Another benefit of large polarizability is that already small patches of periodically arranged plasmonic scatterers, just a few scatterers across, are sufficient to bring out the collective effects of infinite lattices [184], such as diffractive directional in-and out-coupling of emission. This has been elegantly demonstrated by several groups [64,185,186]. One of the studies investigated the emission from fluorophores located at the central scatterer (hole-in-film) in a hexagonal lattice, adding rows of the lattice one by one around the central hole [64].…”

Section: Diffraction As Main Philosophy Of Light-emitting Plasmonic Mmentioning

confidence: 96%

Light-emitting metasurfaces

et al. 2019

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Photonic metasurfaces, that is, two-dimensional arrangements of designed plasmonic or dielectric resonant scatterers, have been established as a successful concept for controlling light fields at the nanoscale. While the majority of research so far has concentrated on passive metasurfaces, the direct integration of nanoscale emitters into the metasurface architecture offers unique opportunities ranging from fundamental investigations of complex light-matter interactions to the creation of flat sources of tailored light fields. While the integration of emitters in metasurfaces as well as many fundamental effects occurring in such structures were initially studied in the realm of nanoplasmonics, the field has recently gained significant momentum following the development of Mie-resonant dielectric metasurfaces. Because of their low absorption losses, additional possibilities for emitter integration, and compatibility with semiconductor-based light-emitting devices, all-dielectric systems are promising for highly efficient metasurface light sources. Furthermore, a flurry of new emission phenomena are expected based on their multipolar resonant response. This review reports on the state of the art of light-emitting metasurfaces, covering both plasmonic and all-dielectric systems.

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Section: Diffraction As Main Philosophy Of Light-emitting Plasmonic Mmentioning

confidence: 96%

Light-emitting metasurfaces

et al. 2019

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“…NPs in the array [89,90]. However, periodic lattices of strictly arranged NPs are usually considered to study this finite-size effect.…”

Section: Disordered Arrays a Types Of Disordermentioning

confidence: 99%

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

et al. 2019

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Collective lattice resonances in disordered 2D arrays of spherical Si nanoparticles (NPs) have been thoroughly studied within the framework of the coupled dipole approximation. Three types of defects have been analyzed: positional disorder, size disorder, and quasi-random disorder. We show that the positional disorder strongly suppresses either the electric dipole (ED) or the magnetic dipole (MD) coupling depending on the axis along which the NPs are shifted. Contrary, size disorder strongly affects only the MD response, while the the ED resonance can be almost intact, depending on the lattice configuration. Finally, random removing of NPs from an ordered 2D lattice reveals a quite surprising result: hybridization of the ED and MD resonances with lattice modes remains observable even in the case of random removing of up to 84% of the NPs from the ordered array. Reported results could be important for rational design and utilization of metasurfaces, solar cells and other all-dielectric photonic devices.

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“…Finally, after thermal evaporation of 40 nm of aluminum, a lift-off process was performed. The array size was 50 μm x 80 m, consisting of about 27000 elements, can be considered large enough to observe the effect of surface lattice resonances in the transmission spectra 50,51 Modelling. Electromagnetic simulations have been performed assuming infinite array size (given the large number of fabricated elements)using a commercial finite difference time-domain-based software (Lumerical FDTD Solutions) and the T-matrix method 46 .…”

Section: Methodsmentioning

confidence: 99%

Symmetry Breaking in Oligomer Surface Plasmon Lattice Resonances

et al. 2019

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We describe a novel plasmonic mode engineering, enabled by the structural symmetry of a plasmonic crystal with a metallic oligomer as unit cell. We show how the oligomer symmetry can tailor the scattering directions to spatially overlap with the diffractive orders directions of a plasmonic array. Applied to the color generation field, the presented approach enables the challenging achievement of a broad spectrum of angle-dependent colours since smooth and continuous generation of transmitted vibrant colors, covering both, the cyan-magenta-yellow and the red-green-blue color spaces, is demonstrated, by scattering angle-and polarization-dependent optical response. The addition of a symmetry driven level of control multiplies the possibility of optical information storage, being of potential interest for secured optical information encoding but also for nanophotonic applications, from demultiplexers or signal processing devices to on-chip optical nanocircuitry.

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Finite-size effects on periodic arrays of nanostructures

Cited by 62 publications

References 64 publications

Light-emitting metasurfaces

Light-emitting metasurfaces

Collective lattice resonances in disordered and quasi-random all-dielectric metasurfaces

Symmetry Breaking in Oligomer Surface Plasmon Lattice Resonances

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