Single-nanowire surface plasmon gratings
2012
We demonstrate single-nanowire plasmonic gratings made by focused-ion-beam milling of single Au nanowires. At the optical communication band, a 290 nm diameter Au nanowire with grating length of 15.6 µm offers evident grating features with a transmission dip up to ∼3.3 dB. The grating effects in typical Au nanowires with different grating parameters (e.g. grating depth, width and length) are also investigated. Our results suggest a novel approach to one-dimensional plasmonic gratings with high compactness and flexibility, which may find applications in low-dimensional wavelength-selective plasmonic circuits and devices.
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