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Title: Highly sensitive, localized surface plasmon resonance fiber device for environmental sensing, based upon a structured bi-metal array of nano-wires
Authors: Allsop, Thomas P. 
Neal, Ron M. 
Chengbo, Mou 
Kalli, Kyriacos 
Webb, David J. 
Keywords: Environmental sensing;Fiber devices;Localized surface plasmon resonance;Metal arrays
Category: Earth and Related Environmental Sciences
Field: Natural Sciences
Issue Date: 1-Jan-2014
Publisher: Optical Society of American (OSA)
Source: Optics Letters Volume 39, Issue 20, 15 October 2014, Pages 5798-5801
metadata.dc.doi: 10.1364/OL.39.005798
Abstract: We demonstrate a bi-metal coated (platinum and gold or silver), localized surface plasmon resonance fiber sensor with an index sensitivity exceeding 11,900 nm/RIU, yielding an index resolution of 2 × 10-5 in the aqueous index regime. This is one of the highest index sensitivities achieved with an optical fiber sensor. The coatings consist of arrays of bi-metal nano-wires (typically 36 nm in radius and 20 μm in length), supported by a silicon dioxide thin film on a thin substrate of germanium, the nano-wires being perpendicular to the longitudinal axis of the D-shaped fiber.
ISSN: 01469592
Rights: © 2014 Optical Society of America
Type: Article
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