Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/82204
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dc.contributor.authorMartinsson, Eriken
dc.contributor.authorShahjamali, Mohammad Mehdien
dc.contributor.authorEnander, Karinen
dc.contributor.authorBoey, Freddyen
dc.contributor.authorXue, Canen
dc.contributor.authorAili, Danielen
dc.contributor.authorLiedberg, Boen
dc.date.accessioned2016-01-29T06:45:43Zen
dc.date.accessioned2019-12-06T14:48:33Z-
dc.date.available2016-01-29T06:45:43Zen
dc.date.available2019-12-06T14:48:33Z-
dc.date.issued2013en
dc.identifier.citationMartinsson, E., Shahjamali, M. M., Enander, K., Boey, F., Xue, C., Aili, D., et al. (2013). Local Refractive Index Sensing Based on Edge Gold-Coated Silver Nanoprisms. The Journal of Physical Chemistry C, 117(44), 23148-23154.en
dc.identifier.issn1932-7447en
dc.identifier.urihttps://hdl.handle.net/10356/82204-
dc.description.abstractBulk and surface refractive index sensitivity for localized surface plasmon resonance (LSPR) sensing based on edge gold-coated silver nanoprisms (GSNPs) and gold nanospheres was investigated and compared with conventional surface plasmon resonance (SPR) sensing based on propagating surface plasmons. The hybrid GSNPs benefit from an improved stability since the gold frame protecting the unstable silver facets located at the silver nanoprisms (SNPs) edges and tips prevents truncation or rounding of their sharp tips or edges, maintaining a high refractive index sensitivity even under harsh conditions. By using layer-by-layer deposition of polyelectrolytes and protein adsorption, we found that GSNPs exhibit 4-fold higher local refractive index sensitivity in close proximity (<10 nm) to the surface compared to a flat gold film in the conventional SPR setup. Moreover, the sensitivity was 8-fold higher with GSNPs than with gold nanospheres. This shows that relatively simple plasmonic nanostructures for LSPR-based sensing can be engineered to outperform conventional SPR, which is particularly interesting in the context of detecting low molecular weight compounds where a small sensing volume, reducing bulk signals, is desired.en
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent31 p.en
dc.language.isoenen
dc.relation.ispartofseriesThe Journal of Physical Chemistry Cen
dc.rights© 2013 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by The Journal of Physical Chemistry C, American Chemical Society. 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: [http://dx.doi.org/10.1021/jp408187e].en
dc.subjectGold-coated silver nanoprismsen
dc.subjectPolyelectrolytesen
dc.subjectLocalized surface plasmon resonance (LSPR)en
dc.subjectSurface plasmon resonance (SPR)en
dc.subjectBiosensoren
dc.subjectRefractive index sensingen
dc.titleLocal Refractive Index Sensing Based on Edge Gold-Coated Silver Nanoprismsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.contributor.researchCentre for Biomimetic Sensor Scienceen
dc.identifier.doi10.1021/jp408187een
dc.description.versionAccepted versionen
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