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Improving Surface Plasmon Detection in Gold Nanostructures Using a Multi‐Polarization Spectral Integration Method
Author(s) -
Lee KuangLi,
Chih MinJian,
Shi Xu,
Ueno Kosei,
Misawa Hiroaki,
Wei PeiKuen
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201202194
Subject(s) - materials science , detection limit , refractive index , polarization (electrochemistry) , plasmon , optics , surface plasmon resonance , nanostructure , surface plasmon , optoelectronics , nanotechnology , nanoparticle , physics , statistics , chemistry , mathematics
A multi‐polarization spectral integration method to increase the refractive index detection limit of gold nanostructures is presented. For a dual‐period nanogrid structure, the proposed method increased signal‐to‐noise ratio and refractive index detection limit about 8 times larger than the simple intensity method. The nanogrid achieves a detection limit of 1.92 × 10 −6 refractive index unit when the intensity stability is 0.2%.
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