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A plasmonic staircase nano-antenna device with strong electric field enhancement for surface enhanced Raman scattering (SERS) applications

Li, Ziyuan; Hattori, Haroldo; Parkinson, Patrick; Tian, Jie; Fu, Lan; Jagadish, Chennupati; Tan, Hark Hoe

Description

In this paper, a staircase plasmonic nano-antenna device is analysed both theoretically and experimentally. The tapered nano-antenna cavity with a grating leads to electric field enhancement factor (EF) as high as 31 close to 830nm. The integration of a metallic grating aids the coupling of light coming from the vertical direction to the nano-antenna, increasing the electric field in the nano-antenna by a factor of 3. The smallest air gap width between the metallic regions of the fabricated...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
URI: http://hdl.handle.net/1885/59450
Source: Journal of Physics D: Applied Physics
DOI: 10.1088/0022-3727/45/30/305102

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