Abstract
We show a novel approach to fabricate plasmonic nanoantennae based on a maskless focused ion beam nanoring patterning process. Antenna nanoarrays with desired outlines are achieved by precisely controlling the geometric parameters during the milling process. Various nanoantenna designs of bow-tie, nanoclusters (pentamers), and ellipsoid shaped satellites surrounded particle lattices are realized. The whole fabrication method is programmable and monolithic since only a one-step milling process is involved. The optical properties are experimentally characterized. Such nanoantennae may find extensive applications in chemical/bio-sensing due to remarkably enhanced near field intensity at the plasmon resonance.
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Abbreviations
- ri :
-
inner radius of the ring aperture for nanoantennae patterning
- ro :
-
outer radius of the ring aperture for nanoantennae patterning
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Lv, JT., Yan, Y., Zhang, WK. et al. Plasmonic nanoantennae fabricated by focused Ion beam milling. Int. J. Precis. Eng. Manuf. 16, 851–855 (2015). https://doi.org/10.1007/s12541-015-0112-3
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DOI: https://doi.org/10.1007/s12541-015-0112-3