Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4865553
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Funding
- French National Research Agency (ANR) [ANR-09-BLAN-0177, ANR-10-BLAN-919]
- A*MIDEX project [ANR-11-IDEX-0001-02]
- Investissements d'Avenir French Government program
- Deutsche Forschungsgemeinschaft (DFG) [SPP1391]
- German Research Foundation (Deutsche Forschungs-gemeinschaft, DFG)
- Center for Quantum Engineering and Space-Time Research (QUEST)
- Laboratory of Nano-and Quantum Engineering (LNQE) of the Leibniz University Hannover
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0177] Funding Source: Agence Nationale de la Recherche (ANR)
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By using methods of laser-induced transfer combined with nanoparticle lithography, we design and fabricate large-area gold nanoparticle-based metamaterial arrays exhibiting extreme Heaviside-like phase jumps in reflected light due to a strong diffractive coupling of localized plasmons. When employed in sensing schemes, these phase singularities provide the sensitivity of 5 x 10(4) deg. of phase shift per refractive index unit change that is comparable with best values reported for plasmonic biosensors. The implementation of sensor platforms on the basis of such metamaterial arrays promises a drastic improvement of sensitivity and cost efficiency of plasmonic biosensing devices. (C) 2014 AIP Publishing LLC.
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