Plasmonic Resonances of Metal Nanoparticles: Atomistic vs. Continuum Approaches

Bonatti, Luca; Gil, Gabriel; Giovannini, Tommaso; Corni, Stefano; Cappelli, Chiara

doi:10.3389/fchem.2020.00340

Cited by 31 publications

(35 citation statements)

References 70 publications

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“…Large systems can in principle be described by means of continuum approaches; however, in the case of complex shapes, basic electrodynamical continuum methods cannot be applied and numerical methodologies (such BEM) able to treat complex boundaries need to be exploited. 33 Their use is far from trivial, thus limiting their application in realistic systems.…”

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confidence: 99%

Graphene Plasmonics: Fully Atomistic Approach for Realistic Structures

Giovannini

Bonatti

Polini

et al. 2020

J. Phys. Chem. Lett.

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We demonstrate that the plasmonic properties of realistic graphene and graphene-based materials can effectively and accurately be modeled by a novel, fully atomistic, yet classical, approach, named ωFQ. Such a model is able to reproduce all plasmonic features of these materials and their dependence on shape, dimension, and fundamental physical parameters (Fermi energy, relaxation time, and two-dimensional electron density). Remarkably, ωFQ is able to accurately reproduce experimental data for realistic structures of hundreds of nanometers (∼370k atoms), which cannot be afforded by any ab initio method. Also, the atomistic nature of ωFQ permits the investigation of complex shapes, which can hardly be dealt with by exploiting widespread continuum approaches.

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confidence: 99%

Graphene Plasmonics: Fully Atomistic Approach for Realistic Structures

Giovannini

Bonatti

Polini

et al. 2020

J. Phys. Chem. Lett.

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“…Efforts have also been made to modulate the LSPR behavior of noble metals via exotic morphologies [ 98 ]. Atomistic and continuum calculations have provided deeper understanding of the plasmonic responses of these noble metals, and recent efforts have also focused on the use of phase and compositional changes to help evoke plasmon responses in lower cost, non-plasmonic noble metals, transition metal oxides and nitrides, and chalcogenide compounds [ 21 , 99 , 100 , 101 , 102 , 103 ].…”

Section: Introductionmentioning

confidence: 99%

Hot Electrons in TiO2–Noble Metal Nano-Heterojunctions: Fundamental Science and Applications in Photocatalysis

Manuel

Shankar

2021

Nanomaterials

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Plasmonic photocatalysis enables innovation by harnessing photonic energy across a broad swathe of the solar spectrum to drive chemical reactions. This review provides a comprehensive summary of the latest developments and issues for advanced research in plasmonic hot electron driven photocatalytic technologies focusing on TiO2–noble metal nanoparticle heterojunctions. In-depth discussions on fundamental hot electron phenomena in plasmonic photocatalysis is the focal point of this review. We summarize hot electron dynamics, elaborate on techniques to probe and measure said phenomena, and provide perspective on potential applications—photocatalytic degradation of organic pollutants, CO2 photoreduction, and photoelectrochemical water splitting—that benefit from this technology. A contentious and hitherto unexplained phenomenon is the wavelength dependence of plasmonic photocatalysis. Many published reports on noble metal-metal oxide nanostructures show action spectra where quantum yields closely follow the absorption corresponding to higher energy interband transitions, while an equal number also show quantum efficiencies that follow the optical response corresponding to the localized surface plasmon resonance (LSPR). We have provided a working hypothesis for the first time to reconcile these contradictory results and explain why photocatalytic action in certain plasmonic systems is mediated by interband transitions and in others by hot electrons produced by the decay of particle plasmons.

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“…The term nanostructure is used to refer to structures showing properties that are different to the ones shown in both the molecular and bulk solid state, and in which at least one of their dimensions or structural attributes are in an approximate size range from 1 to 100 nm [1], although this range can be somehow flexible. Some typical examples of properties shown by nanostructures, depending on their size and shape, are the luminescence in quantum [2][3][4] and carbon dots [5], the plasmonic properties in metal nanoparticles [6], and the room-temperature ferromagnetism exhibited by nanoparticles of intrinsically nonmagnetic inorganic materials [7]. Nanoscience is thus considered to be situated between atomic and molecular chemistry, and solid state and materials chemistry.…”

Section: Introductionmentioning

confidence: 99%

Molecular Bottom-Up Approaches for the Synthesis of Inorganic and Hybrid Nanostructures

et al. 2021

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Chemical routes for the synthesis of nanostructures are fundamental in nanoscience. Among the different strategies for the production of nanostructures, this article reviews the fundamentals of the bottom-up approaches, focusing on wet chemistry synthesis. It offers a general view on the synthesis of different inorganic and hybrid organic–inorganic nanostructures such as ceramics, metal, and semiconductor nanoparticles, mesoporous structures, and metal–organic frameworks. This review article is especially written for a wide audience demanding a text focused on the basic concepts and ideas of the synthesis of inorganic and hybrid nanostructures. It is styled for both early researchers who are starting to work on this topic and also non-specialist readers with a basic background on chemistry. Updated references and texts that provide a deeper discussion and describing the different synthesis strategies in detail are given, as well as a section on the current perspectives and possible future evolution.

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Plasmonic Resonances of Metal Nanoparticles: Atomistic vs. Continuum Approaches

Cited by 31 publications

References 70 publications

Graphene Plasmonics: Fully Atomistic Approach for Realistic Structures

Graphene Plasmonics: Fully Atomistic Approach for Realistic Structures

Hot Electrons in TiO2–Noble Metal Nano-Heterojunctions: Fundamental Science and Applications in Photocatalysis

Molecular Bottom-Up Approaches for the Synthesis of Inorganic and Hybrid Nanostructures

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