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Analyst. 2011 May 7;136(9):1859-66. doi: 10.1039/c0an01022g. Epub 2011 Mar 24.

Plasmonic properties of silver nanostructures coated with an amorphous silicon-carbon alloy and their applications for sensitive sensing of DNA hybridization.

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  • 1Physique de la Matière Condensée, Ecole Polytechnique, CNRS, 91128 Palaiseau, France.


The use of an amorphous silicon-carbon alloy overcoating on silver nanostructures in a localized surface plasmon resonance (LSPR) sensing platform allows for decreasing the detection limit by an order of magnitude as compared to sensors based on gold nanostructures deposited on glass. In addition, silver based multilayer structures show a distinct plasmonic behaviour as compared to gold based nanostructures, which provides the sensor with an increased short-range sensitivity and a decreased long-range sensitivity.

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