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Journal Article Hybrid Nanostructures Based on VO2 Semishells and Au Nanohemispheres for Tunable Plasmonic Coupling
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Authors
Abbas I. Maaroof, Dong-guk Cho, Bong-Jun Kim, Hyun-Tak Kim, Seunghun Hong
Issue Date
2013-09
Citation
The Journal of Physical Chemistry C, v.117, no.38, pp.19601-19605
ISSN
1932-7447
Publisher
American Chemical Society(ACS)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1021/jp405343z
Abstract
Hybrid nanostructure-based VO2 semishells (SSs) and Au nanohemispheres (NHs) were developed as a tunable plasmonic nanostructrue. The hybrid structures exhibited an enhanced optical absorbance due to a strong plasmonic coupling between VO2 SSs and Au NHs compared to that of the VO2 SSs alone. Furthermore, its absorption peak can be controlled by the phase transition of VO2 SS under different temperature conditions. The simulation results showed the enhanced plasmonic coupling near the edges of Au NHs, indicating the hemispherical shape of our Au nanostructures can be advantageous in achieving the enhanced plasmonic coupling in our hybrid structures. These "smart" functions of the hybrid nanostructures should provide great opportunities in the development of various optical devices, such as photothermal nanoregulators and ultrafast optical switches. © 2013 American Chemical Society.
KSP Keywords
Absorption peak, Au nanostructures, Hybrid structure, Optical devices, Optical switches, Phase transition, Temperature condition, Ultrafast optical, hybrid nanostructures, optical absorbance, plasmonic coupling