Curvature-Dependent Cavity-Nanoparticle Scaffold-Based Clusters with LSPR Enhancement as SERS Substrates

Tunable local surface plasmon resonance (LSPR) enhancement properties of cavity-nanoparticle scaffold-based clusters were investigated via finite-difference time-domain (FDTD) simulations. Hollow Au-cylinder-based and hollow Au-sphere-based nanocomposites models were presented with calculated optica...

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Bibliographic Details
Published in:Plasmonics (Norwell, Mass.) Mass.), 2021, Vol.16 (4), p.1231-1239
Main Authors: You, Tingting, Gao, Yukun, Chen, Huaxiang, Yin, Penggang
Format: Article
Language:English
Subjects:
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Clusters
Curvature
Gold
Nanocomposites
Nanoparticles
Nanotechnology
Near fields
Raman spectroscopy
Scaffolds
Spectrum analysis
Substrates
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Summary:Tunable local surface plasmon resonance (LSPR) enhancement properties of cavity-nanoparticle scaffold-based clusters were investigated via finite-difference time-domain (FDTD) simulations. Hollow Au-cylinder-based and hollow Au-sphere-based nanocomposites models were presented with calculated optical spectra, near-field distribution, and average enhancement. Focusing on surface curvature, concave and convex Au-surface/Au-nanoparticles were built for further understanding on the local shape dependency in complicate scaffold-based clusters. Tunable near-field enhancement contributions and scaffold-dependency were discussed for potential in plasmonic applications such as surface-enhanced Raman spectroscopy (SERS), LSPR sensor, and nanoantenna.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-021-01396-8