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Kuang-Li Lee, Min-Jian Chih, Xu Shi, Kosei Ueno, Hiroaki Misawa and Pei-Kuen Wei Improving Surface Plasmon Detection in Gold Nanostructures Using a Multi-Polarization Spectral Integration Method Advanced Materials 24

Version of Record online: 16 JUL 2012 | DOI: 10.1002/adma.201202194

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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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