Near-Field Localization of Single Au Cubes: A Group Theory Description

Mitiche, Sarra; Marguet, Sylvie; Charra, Fabrice; Douillard, Ludovic

doi:10.1021/acs.jpcc.6b10585

Cited by 15 publications

(20 citation statements)

References 58 publications

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“…. All these resonance states can be selectively excited via a proper choice of the polarization of the incident light field 54 .…”

Section: Introductionmentioning

confidence: 99%

Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field

Ge¹,

Marguet²,

Issa³

et al. 2020

Nat Commun

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Hybrid plasmonic nanoemitters based on the combination of quantum dot emitters (QD) and plasmonic nanoantennas open up new perspectives in the control of light. However, precise positioning of any active medium at the nanoscale constitutes a challenge. Here, we report on the optimal overlap of antenna's near-field and active medium whose spatial distribution is controlled via a plasmon-triggered 2-photon polymerization of a photosensitive formulation containing QDs. Au nanoparticles of various geometries are considered. The response of these hybrid nano-emitters is shown to be highly sensitive to the light polarization. Different light emission states are evidenced by photoluminescence measurements. These states correspond to polarization-sensitive nanoscale overlap between the exciting local field and the active medium distribution. The decrease of the QD concentration within the monomer formulation allows trapping of a single quantum dot in the vicinity of the Au particle. The latter objects show polarization-dependent switching in the single-photon regime.

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“…. All these resonance states can be selectively excited via a proper choice of the polarization of the incident light field 54 .…”

Section: Introductionmentioning

confidence: 99%

Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field

Ge¹,

Marguet²,

Issa³

et al. 2020

Nat Commun

Self Cite

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“…Nano-objects of noble metals exhibit collective oscillation modes of their conduction electrons known as local plasmons. Beyond spectacular colors, plasmon modes can induce subwavelength electromagnetic field confinement [1,2] associated to field enhancement effects which are of major interest towards future applications, from selective photochemistry or phototherapy to new multifunctional characterization techniques such as surface or tip-enhanced microscopies and spectroscopies [3].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Nano-Objects: From Subwavelength Field Enhancement to Hot Charges and Luminescence

Molinaro

Marguet

Douillard

et al. 2019

2019 21st International Conference on Transparent Optical Networks (ICTON)

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Although bulk gold is known to present very low luminescence quantum yield, gold nanoparticles can present a huge nonlinear luminescence with an apparent high influence of the particle shape. The two-photon luminescence (TPL) of Au nanorods (NR) was investigated at the single-object level, combining polarizationresolved TPL and simultaneously acquired topography using atomic force microscopy (AFM). We evidence that the huge TPL observed in these rods is the result of an interplay between their two different localized surface plasmon resonances. Excitation of gold NR at its longitudinal plasmon frequency first lead to increased absorption and thus increased production of electron-hole pairs that happen to recombine radiatively through the transverse plasmon band i.e. with an enhanced emission at the NR transverse plasmon band. Above fundamental aspects, we show that these specific properties make TPL a highly sensitive technique for the characterization of nanoobjects from their topology to their organization.

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“…The optical properties of nanoparticles (NP) have generated increasing research interest due to the recent advances in nanotechnology. A particularly interesting case of NP are the plasmonic NPs (Lagos et al, ; Mitiche et al, ), that is, particles able to support localized charge oscillations, also known as localized surface plasmons Quinten (). These resonances are affected by the specific geometrical and material characteristics, widely used for radiation control and harvesting applications (Akselrod et al, ; Yang et al, ).…”

Section: Introductionmentioning

confidence: 99%

Study of Plasmonic Resonances on Platonic Solids

2017

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In this study we discuss the plasmonic subwavelength scattering resonances of five regular polyhedra, that is, the Platonic solids tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron. A brief discussion regarding their geometrical characteristics and the numerical method used in the study is given. All results are compared with the benchmark case of a sphere, in order to observe how the geometry of the solid affects the spectral characteristics. The principal finding is that the shift of the main dipole resonance exhibits a solid vertex hierarchical order; in other words, the position of the resonance correlates with the solid angle of the vertex of the given solid. This is in contrast with the hedra‐hierarchical order found for the electrostatic dielectric response of these solids. These results can create new avenues for applications and devices that require plasmonic particles with on‐demand functionalities.

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Near-Field Localization of Single Au Cubes: A Group Theory Description

Cited by 15 publications

References 58 publications

Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field

Hybrid plasmonic nano-emitters with controlled single quantum emitter positioning on the local excitation field

Plasmonic Nano-Objects: From Subwavelength Field Enhancement to Hot Charges and Luminescence

Study of Plasmonic Resonances on Platonic Solids

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