Spatially-Localized Functionalization on Nanostructured Surfaces for Enhanced Plasmonic Sensing Efficacy - Groupe Biophotonique Access content directly
Journal Articles Nanomaterials Year : 2022

Spatially-Localized Functionalization on Nanostructured Surfaces for Enhanced Plasmonic Sensing Efficacy

Abstract

This work demonstrates the enhancement in plasmonic sensing efficacy resulting from spatially-localized functionalization on nanostructured surfaces, whereby probe molecules are concentrated in areas of high field concentration. Comparison between SERS measurements on nanostructured surfaces (arrays of nanodisks 110 and 220 nm in diameter) with homogeneous and spatially-localized functionalization with thiophenol demonstrates that the Raman signal originates mainly from areas with high field concentration. TERS measurements with 10 nm spatial resolution confirm the field distribution profiles predicted by the numerical modeling. Though this enhancement in plasmonic sensing efficacy is demonstrated with SERS, results apply equally well to any type of optical/plasmonic sensing on functionalized surfaces with nanostructuring.
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Origin : Publication funded by an institution

Dates and versions

hal-03815795 , version 1 (02-11-2022)

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Jean-François Bryche, Marlo Vega, Agnès Tempez, Thibault Brulé, Thomas Carlier, et al.. Spatially-Localized Functionalization on Nanostructured Surfaces for Enhanced Plasmonic Sensing Efficacy. Nanomaterials, 2022, 12 (20), pp.3586. ⟨10.3390/nano12203586⟩. ⟨hal-03815795⟩
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