Local-field confinement in three-pair arrays of metallic nanocylinders
Posted on 2017-04-28 - 14:20
Confinement of light in nano-scale region of three silver nanocylinder pairs is studied by finite-difference time-domain simulations. Light is confined in gaps between nanocylinders due to localized plasmon excitation and the strongest local-field enhancement exhibits in the gap of the second pair. The surface plasmon resonance has red-shift for nanocylinders of larger radius. The resonance wavelength and local-field enhancement are nearly proportional to the radius of nanocylinders in visible light region, i.e., the plasmon resonance of nanocylinder pairs is predictable and controllable. An open cavity model is proposed to understand the linear relation between the resonant wavelength and the radius of nanocylinders.
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Ng, Ming-Yaw; Liu, Wei-Chih (2006). Local-field confinement in three-pair arrays of metallic nanocylinders. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3759899.v1
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AUTHORS (2)
MN
Ming-Yaw Ng
WL
Wei-Chih Liu
KEYWORDS
surface plasmon resonanceplasmon resonancenano-scale regionfinite-difference time-domain simulationsradiussilver nanocylinder pairsnanocylinders Confinementlight regionplasmon excitationlocal-field enhancement exhibitsLocal-field confinementnanocylinder pairsresonance wavelengththree-pair arrayslocal-field enhancementcavity model