Tunable plasmonic characteristics at asymmetric double metal caps on a dielectric nanosphere

Hansik Yun; Hyeonsoo Park; Byoungho Lee

doi:10.1117/12.2184383

1 July 2015 Tunable plasmonic characteristics at asymmetric double metal caps on a dielectric nanosphere

Hansik Yun, Hyeonsoo Park, Byoungho Lee

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 965532 (2015) https://doi.org/10.1117/12.2184383
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

The plasmonics is expected to be a potential candidate of future sensing technologies, such as single-molecular detections and surface-enhanced Raman scattering, because of concentrated and enhanced electric fields at a sharp edge of a metallic nanostructure. In particular, breaking symmetry of a plasmonic structure results in anisotropic angular optical responses and allows a broad tunability of surface plasmons. In this study, we suggest a structure of asymmetric double metal caps on a dielectric nanosphere in order to increase the asymmetry of component structures and to improve the tunability of a plasmonic sensor.

Citation Download Citation

Hansik Yun, Hyeonsoo Park, and Byoungho Lee "Tunable plasmonic characteristics at asymmetric double metal caps on a dielectric nanosphere", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965532 (1 July 2015); https://doi.org/10.1117/12.2184383

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