Scattering properties of vein induced localized surface plasmon resonances on a gold disk
Type
Conference PaperAuthors
Amin, MuhammadBagci, Hakan

KAUST Department
Computational Electromagnetics LaboratoryComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2011-12Permanent link to this record
http://hdl.handle.net/10754/564465
Metadata
Show full item recordAbstract
It is demonstrated via simulations that a gold nano-disk with a non-concentric cavity supports localized surface plasmon resonances over a frequency band that includes the visible and the near-infrared parts of the spectrum. The charge distribution on the disk indicates that the two distinct peaks in the scattering cross section are due to the (hybridized) higher-order plasmon modes; plasmon hybridization that involves the dipole modes of the disk and the cavity enforces the "coupling" of the plane-wave excitation to the originally-dark higher-order modes. It is further demonstrated that the resonance frequencies can be tuned by varying the radius of the embedded non-concentric cavity. The near-field enhancement observed at these two tunable resonance frequencies suggests that the proposed structure can be used as a substrate in surface enhanced spectroscopy applications. © 2011 IEEE.Citation
Amin, M., & Bagci, H. (2011). Scattering properties of vein induced localized surface plasmon resonances on a gold disk. 8th International Conference on High-Capacity Optical Networks and Emerging Technologies. doi:10.1109/honet.2011.6149824Conference/Event name
8th International Conference on High-Capacity Optical Networks and Emerging Technologies, HONET 2011ISBN
9781457711695ae974a485f413a2113503eed53cd6c53
10.1109/HONET.2011.6149824