Plasmonic nanowires arranged in Fibonacci number chain: Excitation angle-dependent optical properties

摘要: Herein we numerically study the excitation angle-dependant far-field and near-field optical properties of vertical plasmonic nanowires arranged in an unconventional linear geometry: Fibonacci number chain. The first five numbers series (1, 1, 2, 3, 5) were mapped to size gold nanowires, a chain their interactions, compared them conventional nanowires. By harnessing radiative evanescent coupling regimes geometry, found systematic variation extinction confinement geometries. Our simulation studies revealed enhanced backscattered intensity radiation pattern at angles along chain-length which was otherwise absent for Such angular reconfiguration fields geometries can be harnessed tunable on-chip plasmonics.