Broadband optical response in ternary tree fractal plasmonic nanoantenna

Show simple item record Hegde, Ravi S. Khoo, E. H. 2015-10-25T12:08:17Z 2015-10-25T12:08:17Z 2016-04
dc.identifier.citation Hegde, Ravi S. and Khoo, E. H., "Broadband optical response in ternary tree fractal plasmonic nanoantenna", Plasmonics, DOI: 10.1007/s11468-015-0059-3, pp. 1-9, Apr. 2016. en_US
dc.identifier.issn 1557-1963
dc.description.abstract The ability to precisely tailor lineshapes, operational bandwidth, and localized electromagnetic field enhancements (“hot spots”) in nanostructures is currently of interest in advancing the performance of plasmonics-based chemical and biological sensing techniques. Fractal geometries are an intriguing alternative in the design of plasmonic nanostructures as they offer tunable multiband response spanning the visible and infrared spectral regions. A numerical study of the optical behavior of ternary tree fractal plasmonic nanoantenna is presented. Self-similar features are seen to emerge in the extinction spectra with the increase in fractal order N of the tree structure. Plasmon oscillations occurring at different length scales are shown to correspond to the multiple peaks and are compared with the spatial maps of electric field enhancement at the surface of the nanoantenna. The multiple peaks are shown to be independently tunable by structural variation. The robustness of the spectral response and polarization dependence arising due to various asymmetries is discussed. en_US
dc.description.statementofresponsibility by Ravi S. Hegde and E. H. Khoo
dc.format.extent vol. 11, no. 2, pp. 465-473
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Fractals en_US
dc.subject Nanoantenna en_US
dc.subject Surface-enhanced spectroscopy en_US
dc.subject Nanostructures en_US
dc.title Broadband optical response in ternary tree fractal plasmonic nanoantenna en_US
dc.type Article en_US
dc.relation.journal Plasmonics

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