Nanoscale Engineering of Optical Strong Coupling inside Metals

Assadillayev, Artyom; Faniayeu, Ihar; Dmitriev, Alexandre; Raza, Søren

doi:10.1002/adom.202201971

Cited by 2 publications

(1 citation statement)

References 49 publications

(64 reference statements)

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“…In the recent decade the surface plasmons in metallic nanostructures and the interaction between the surface plasmons and quantum emitters, for example, quantum dots, as well as cyanine dye molecules are under active research [1][2][3][4][5]. Such nanostructures make it possible to control the interaction between light and substance at the subwavelength scale.…”

Section: Introductionmentioning

confidence: 99%

Optical and thermal effects in the neighborhood of the spherical layered nanoparticle of the ``metallic core – J-aggregate shell'' structure

Korotun,

Smirnova,

Reva

et al. 2023

Condens. Matter Phys.

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The relations for the polarizability of the metallic nanoparticles, coated with the shell of cyanine dyes, are obtained in the article. The frequency dependencies for light absorption and scattering efficiencies, the heating of the composite nanoparticle and the electric field amplification in its neighborhood are studied. It is established that all the dependencies have three maxima which correspond to the frequencies of hybrid plasmon-exciton resonance. It is shown that an increase in content of metal in the nanoparticle causes a blue shift of the maxima from the visible part of the spectrum and a red shift of the maximum from ultraviolet frequency range. The issue of application of metal-organic nanoparticles in nanomedicine, in particular for the photothermal therapy of malignant neoplasms is studied.

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Section: Introductionmentioning

confidence: 99%

Optical and thermal effects in the neighborhood of the spherical layered nanoparticle of the ``metallic core – J-aggregate shell'' structure

Korotun,

Smirnova,

Reva

et al. 2023

Condens. Matter Phys.

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Self-hybridisation between interband transitions and Mie modes in dielectric nanoparticles

Tserkezis,

Stamatopoulou,

Wolff

et al. 2024

Nanophotonics

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We discuss the possibility of self-hybridisation in high-index dielectric nanoparticles, where Mie modes of electric or magnetic type can couple to the interband transitions of the material, leading to spectral anticrossings. Starting with an idealised system described by moderately high constant permittivity with a narrow Lorentzian, in which self-hybridisation is visible for both plane-wave and electron-beam excitation, we embark on a quest for realistic systems where this effect should be visible. We explore a variety of spherical particles made of traditional semiconductors such as Si, GaAs, and GaP. With the effect hardly discernible, we identify two major causes hindering observation of self-hybridisation: the very broad spectral fingerprints of interband transitions in most candidate materials, and the significant overlap between electric and magnetic Mie modes in nanospheres. We thus depart from the spherical shape, and show that interband–Mie hybridisation is indeed feasible in the example of GaAs cylinders, even with a simple plane-wave source. This so-far unreported kind of polariton has to be considered when interpreting experimental spectra of Mie-resonant nanoparticles and assigning modal characters to specific features. On the other hand, it has the potential to be useful for the characterisation of the optical properties of dielectric materials, through control of the hybridisation strength via nanoparticle size and shape, and for applications that exploit Mie resonances in metamaterials, highly-directional antennas, or photovoltaics.

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Nanoscale Engineering of Optical Strong Coupling inside Metals

Cited by 2 publications

References 49 publications

Optical and thermal effects in the neighborhood of the spherical layered nanoparticle of the ``metallic core – J-aggregate shell'' structure

Optical and thermal effects in the neighborhood of the spherical layered nanoparticle of the ``metallic core – J-aggregate shell'' structure

Self-hybridisation between interband transitions and Mie modes in dielectric nanoparticles

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