Plasmons in supported size-selected silver nanoclusters
Tobias Lünskens,Philipp Heister,Martin Thämer,Constantin A. Walenta,Aras Kartouzian,Ulrich Heiz +5 more
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TLDR
The plasmonic behavior of size-selected supported silver clusters is studied by surface second harmonic generation spectroscopy for the first time and results are in quantitative agreement with a hybrid theoretical model based on Mie theory and the existing DFT calculations.Abstract:
The plasmonic behavior of size-selected supported silver clusters is studied by surface second harmonic generation spectroscopy for the first time. A blue shift of ∼0.2 eV in the plasmon resonance is observed with decreasing cluster size from Ag55 to Ag9. In addition to the general blue shift, a nonscalable size-dependence is also observed in plasmonic behavior of Ag nanoclusters, which is attributed to varying structural properties of the clusters. The results are in quantitative agreement with a hybrid theoretical model based on Mie theory and the existing DFT calculations.read more
Citations
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Shape- and size-specific chemistry of Ag nanostructures in catalytic ethylene epoxidation
Phillip Christopher,Suljo Linic +1 more
TL;DR: In this article, shape and size controlled synthesis of Ag nanoparticles is used to show that silver nanocubes exhibit higher selectivity than nanowires and nanospheres for a given shape, larger particles offer improved selectivity.
Journal ArticleDOI
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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Interplay between plasmon and single-particle excitations in a metal nanocluster
Jie Ma,Zhi Wang,Lin-Wang Wang +2 more
TL;DR: It is found that the disappearance of the zero-frequency peak in the Fourier transform of the band-to-band transition coefficient is a hallmark of the plasmon.
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Perspective: Size selected clusters for catalysis and electrochemistry
TL;DR: An overview of studies performed under both ultra-high vacuum and realistic reaction conditions aimed at the interrogation, characterization, and understanding of the performance of supported size-selected clusters in heterogeneous and electrochemical reactions, which address the effects of cluster size, cluster composition, cluster-support interactions, and reaction conditions.
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Effect of quantum tunneling on the efficiency of excitation energy transfer in plasmonic nanoparticle chain waveguides
TL;DR: In this paper, a detailed analysis of the electronic couplings that mediate excitation energy transfer (EET) in plasmonic nanoantenna systems using large-scale quantum dynamical calculations is presented.
References
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Journal ArticleDOI
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
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Optical Properties of Metal Clusters
U. Kreibig,Michael Vollmer +1 more
TL;DR: In this paper, the authors present a survey of optical spectra of Elemental Metal Clusters and Chain Aggregates and discuss experimental results and experimental methods for metal clustering experiments.
Journal ArticleDOI
Photophysical, photochemical and photocatalytic aspects of metal nanoparticles
TL;DR: In this article, a photoactive molecule (e.g., pyrene) is added to a metal nanoparticle to enhance the photochemical activity and render the organic−inorganic hybrid nanoassemblies suitable for light harvesting and optoelectronic applications.
Journal ArticleDOI
Visible-light-enhanced catalytic oxidation reactions on plasmonic silver nanostructures
TL;DR: It is shown that plasmonic nanostructures of silver can concurrently use low-intensity visible light and thermal energy to drive catalytic oxidation reactions--such as ethylene epoxidation, CO oxidation, and NH₃ oxidation--at lower temperatures than their conventional counterparts that use only thermal stimulus.
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