Bimetallic silver-gold film waveguide surface plasmon resonance sensor

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Bimetallic silver-gold film waveguide surface plasmon resonance sensor

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dc.contributor.author Ong, Biow Hiem
dc.contributor.author Yuan, Xiaocong
dc.contributor.author Tjin, Swee Chuan
dc.date.accessioned 2009-01-05T03:01:02Z
dc.date.available 2009-01-05T03:01:02Z
dc.date.copyright 2007
dc.date.issued 2009-01-05T03:01:02Z
dc.identifier.citation Ong, B. H., Yuan, X., & Tjin, S. C. (2007). Bimetallic silver-gold film waveguide surface plasmon resonance sensor. Fiber and Integrated Optics, 26(4), 229-240.
dc.identifier.issn 0146-8030
dc.identifier.issn 1096-4681
dc.identifier.uri http://hdl.handle.net/10220/4368
dc.description.abstract It is desirable that a surface plasmon resonance (SPR) sensor is highly sensitive to binding interactions within the sensing region, generate evanescent fields with long penetration depths, and utilize a metal film that is very stable even in extreme environmental conditions. In this study, we present the first example of a wavelength-modulated waveguide SPR sensor with a bimetallic silver-gold film for surface plasmon excitation. The underlying silver yields better evanescent field enhancement of the sensing surface, while the overlying gold ensures that the stability of the metallic film is not compromised. It is shown experimentally that in terms of dλ/dn, the bimetallic film waveguide SPR configuration has a sensitivity of 1232 nm/RIU, greater than two times improvement from the 594 nm/RIU achievable with single gold film waveguide SPR sensor. The higher sensitivity, compact nature, and better evanescent field enhancement of this configuration provides the potential to biosensing applications.
dc.format.extent 12 p.
dc.language.iso en
dc.relation.ispartofseries Fiber and integrated optics
dc.rights © 2007 Taylor & Francis This is the author created version of a work that has been peer reviewed and accepted for publication by Fiber and Integrated Optics, Taylor & Francis. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1080/01468030701347106].
dc.subject DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics.
dc.title Bimetallic silver-gold film waveguide surface plasmon resonance sensor
dc.type Journal Article
dc.contributor.research Photonics Research Centre
dc.contributor.school School of Electrical and Electronic Engineering
dc.identifier.openurl http://sfxna09.hosted.exlibrisgroup.com:3410/ntu/sfxlcl3?sid=metalib:CSA_ELECTRONICS&id=doi:&genre=&isbn=&issn=0146-8030&date=2007&volume=26&issue=4&spage=229&epage=240&aulast=Ong&aufirst=%20Biow%20Hiem&auinit=&title=Fiber%20and%20Integrated%20Optics&atitle=Bimetallic%20Silver%2DGold%20Film%20Waveguide%20Surface%20Plasmon%20Resonance%20Sensor
dc.identifier.doi http://dx.doi.org/10.1080/01468030701347106
dc.description.version Published version

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