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Refractometric sensing using propagating versus localized surface plasmons: a direct comparison
Chalmers University of Technology, Sweden.ORCID iD: 0000-0002-4437-6291
2009 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 9, no 12, p. 4428-4433Article in journal (Refereed) Published
Abstract [en]

We present a direct experimental comparison between the refractive index sensing capabilities of localized surface plasmon resonances (LSPRs) in gold nanodisks and propagating surface plasmon resonances (SPRs) on 50 nm gold films. The comparison is made using identical experimental conditions, and for the same resonance wavelength, lambda(SP) congruent with 700 nm. Biosensing experiments with biotin-avidin coupling reveal that the two sensing platforms have very similar performance, despite a superior bulk refractive index sensing figure of merit for the SPR sensor. The results demonstrate that LSPR sensing based on simple transmission or reflection measurements is a highly competitive technique compared to the traditional SPR sensor.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2009. Vol. 9, no 12, p. 4428-4433
National Category
Nano Technology Atom and Molecular Physics and Optics Other Physics Topics
Research subject
Physics
Identifiers
URN: urn:nbn:se:kth:diva-197584DOI: 10.1021/nl902721zISI: 000272395400081PubMedID: 19842703Scopus ID: 2-s2.0-71949128088OAI: oai:DiVA.org:kth-197584DiVA, id: diva2:1165969
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research
Note

QC 20171214

Available from: 2017-12-14 Created: 2017-12-14 Last updated: 2017-12-14Bibliographically approved

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