Nonlocal Response of Metallic Nanospheres Probed by Light, Electrons, and Atoms
Thomas Højlund Christensen,Wei Yan,Søren Raza,Antti-Pekka Jauho,N. Asger Mortensen,Martijn Wubs +5 more
TLDR
In this paper, the effects of nonlocal response by metallic nanospheres in three distinct settings were investigated: atomic spontaneous emission, electron energy loss spectroscopy, and light scattering.Abstract:
Inspired by recent measurements on individual metallic nanospheres that cannot be explained with traditional classical electrodynamics, we theoretically investigate the effects of nonlocal response by metallic nanospheres in three distinct settings: atomic spontaneous emission, electron energy loss spectroscopy, and light scattering. These constitute two near-field and one far-field measurements, with zero-, one-, and two-dimensional excitation sources, respectively. We search for the clearest signatures of hydrodynamic pressure waves in nanospheres. We employ a linearized hydrodynamic model, and Mie–Lorenz theory is applied for each case. Nonlocal response shows its mark in all three configurations, but for the two near-field measurements, we predict especially pronounced nonlocal effects that are not exhibited in far-field measurements. Associated with every multipole order is not only a single blueshifted surface plasmon but also an infinite series of bulk plasmons that have no counterpart in a local-r...read more
Citations
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Quantum Plasmonics
TL;DR: This review discusses and compares the key models and experiments used to explore how the quantum nature of electrons impacts plasmonics in the context of quantum size corrections of localized plasmons and quantum tunneling between nanoparticle dimers.
Journal ArticleDOI
Nonlocal optical response in metallic nanostructures
TL;DR: The nonlocal hydrodynamic model and the recently introduced generalized nonlocal optical response (GNOR) model are thoroughly presented and the influence of nonlocal response on plasmonic excitations is studied in key metallic geometries.
Journal ArticleDOI
Size-Dependent Shifts of Plasmon Resonance in Silver Nanoparticle Films Using Controlled Dissolution: Monitoring the Onset of Surface Screening Effects
Klaus Bo Mogensen,Katrin Kneipp +1 more
TL;DR: In this article, the size dependent blue-and red-shift of the plasmon band of silver nanoparticle films in aqueous solution is reported, where the particle size is continuously decreased by means of controlled dissolution, while measuring the plasm band position by UV-vis absorption spectroscopy.
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Multipole plasmons and their disappearance in few-nanometre silver nanoparticles.
Søren Raza,Shima Kadkhodazadeh,Thomas Højlund Christensen,Marcel Di Vece,Martijn Wubs,N. Asger Mortensen,Nicolas Stenger +6 more
TL;DR: Applying electron energy-loss spectroscopy to individual silver nanoparticles encapsulated in silicon nitride, an additional surface plasmon resonance is observed corresponding to higher angular momenta for nanoparticle radii as small as 4 nm, in agreement with generalized non-local optical response theory.
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Plasmonic quantum size effects in silver nanoparticles are dominated by interfaces and local environments
Alfredo Campos,Nicolas Troc,Emmanuel Cottancin,M. Pellarin,Hans-Christian Weissker,Jean Lermé,Mathieu Kociak,Matthias Hillenkamp,Matthias Hillenkamp +8 more
TL;DR: In this article, a mixed classical/quantum model was proposed to explain the size-dependent spectral shifts of surface plasmon resonances in small metal nanoparticles, induced by quantum effects.
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