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학술지 Hybrid Nanostructures Based on VO2 Semishells and Au Nanohemispheres for Tunable Plasmonic Coupling
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저자
Abbas I. Maaroof, Dong-guk Cho, 김봉준, 김현탁, Seunghun Hong
발행일
201309
출처
The Journal of Physical Chemistry C, v.117 no.38, pp.19601-19605
ISSN
1932-7447
출판사
American Chemical Society(ACS)
DOI
https://dx.doi.org/10.1021/jp405343z
협약과제
13ZE1100, ETRI 창의연구실 사업, 손승원
초록
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 제안 키워드
Absorption peak, Au nanostructures, Hybrid structure, Optical devices, Optical switches, Phase transition, Temperature condition, Ultrafast optical, hybrid nanostructures, optical absorbance, plasmonic coupling