scholarly journals Pseudo-permittivity in simulation of nonlocal effects in optical properties of metallic nanoparticles

2018 ◽  
Author(s):  
◽  
Chao Chen
Keyword(s):  
Optical Properties ◽  
Metallic Nanoparticles ◽  
Nonlocal Effects

Surface roughness and substrate induced symmetry-breaking: influence on the plasmonic properties of aluminum nanostructure arrays

Nanoscale ◽  
2020 ◽  
Author(s):  
Feifei ZHANG ◽  
Jérôme Plain ◽  
Davy Gerard ◽  
Jérôme Martin
Keyword(s):  
Surface Roughness ◽  
Optical Properties ◽  
Symmetry Breaking ◽  
Surface Topography ◽  
Metallic Nanoparticles ◽  
Far Field ◽  
Al Nanoparticles ◽  
Nanostructure Arrays

The surface topography is known to play an important role on the near- and far- field optical properties of metallic nanoparticles. In particular, aluminum (Al) nanoparticles are commonly fabricated through...

scholarly journals Thermo-optical properties of metallic nanoparticles in colloidal systems

2014 ◽  
Author(s):  
Marco Ferreira ◽  
G Martinez ◽  
M Caetano ◽  
L Echevarria ◽  
V Piscitelli
Keyword(s):  
Optical Properties ◽  
Metallic Nanoparticles ◽  
Colloidal Systems

scholarly journals From tunable core-shell nanoparticles to plasmonic drawbridges: Active control of nanoparticle optical properties

2015 ◽  
Vol 1 (11) ◽  
pp. e1500988 ◽  
Author(s):  
Chad P. Byers ◽  
Hui Zhang ◽  
Dayne F. Swearer ◽  
Mustafa Yorulmaz ◽  
Benjamin S. Hoener ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Transfer ◽  
Metallic Nanoparticles ◽  
Interparticle Distance ◽  
Plasmon Mode ◽  
Au Nanoparticle ◽  
Shell Nanoparticles ◽  
Strongly Coupled ◽  
Color Changes ◽  
Oxidation Reduction

The optical properties of metallic nanoparticles are highly sensitive to interparticle distance, giving rise to dramatic but frequently irreversible color changes. By electrochemical modification of individual nanoparticles and nanoparticle pairs, we induced equally dramatic, yet reversible, changes in their optical properties. We achieved plasmon tuning by oxidation-reduction chemistry of Ag-AgCl shells on the surfaces of both individual and strongly coupled Au nanoparticle pairs, resulting in extreme but reversible changes in scattering line shape. We demonstrated reversible formation of the charge transfer plasmon mode by switching between capacitive and conductive electronic coupling mechanisms. Dynamic single-particle spectroelectrochemistry also gave an insight into the reaction kinetics and evolution of the charge transfer plasmon mode in an electrochemically tunable structure. Our study represents a highly useful approach to the precise tuning of the morphology of narrow interparticle gaps and will be of value for controlling and activating a range of properties such as extreme plasmon modulation, nanoscopic plasmon switching, and subnanometer tunable gap applications.

Feasibility of sizing metallic nanoparticles in concentrated suspensions from effective optical properties

2015 ◽  
Author(s):  
G. Morales-Luna ◽  
R. Márquez-Islas ◽  
O. Vázquez-Estrada ◽  
H. Contreras-Tello ◽  
A. García-Valenzuela
Keyword(s):  
Optical Properties ◽  
Metallic Nanoparticles ◽  
Concentrated Suspensions
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