Single-molecule localization to imaging the LDOS modification by an array of plasmonic hollow conical nanopillars

R. Margoth Córdova-Castro; Dirk Jonker; Clément Cabriel; Bart van Dam; Yannick De Wilde; Ignacio Izeddin; Arturo Susarrey Arce; Valentina Krachmalnicoff

doi:10.1117/12.2594858

2 August 2021 Single-molecule localization to imaging the LDOS modification by an array of plasmonic hollow conical nanopillars

R. Margoth Córdova-Castro, Dirk Jonker, Clément Cabriel, Bart van Dam, Yannick De Wilde, Ignacio Izeddin, Arturo Susarrey Arce, Valentina Krachmalnicoff

Author Affiliations +

Proceedings Volume 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX; 1179717 (2021) https://doi.org/10.1117/12.2594858
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

We study the modification of fluorescence emission and decay rate of single fluorescent molecules in the near field of a periodic plasmonic nanostructure formed by a square lattice of Au hollow conical pillars with a periodicity of 250 nm. We perform nanometer-resolved imaging of the LDOS by simultaneously mapping the position and the decay rate of photoactivatable single-molecules with a novel super-resolved microscopy approach which enables multiplexed and super-resolved fluorescence lifetime imaging at the single-molecule level (smFLIM) with a field of view of ~10 µm2. We observe the LDOS modification of such optically rich material at different illumination conditions and we measure a large Purcell factor enhancement which increases for oblique illumination of the nanostructure.

Conference Presentation

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R. Margoth Córdova-Castro, Dirk Jonker, Clément Cabriel, Bart van Dam, Yannick De Wilde, Ignacio Izeddin, Arturo Susarrey Arce, and Valentina Krachmalnicoff "Single-molecule localization to imaging the LDOS modification by an array of plasmonic hollow conical nanopillars", Proc. SPIE 11797, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIX, 1179717 (2 August 2021); https://doi.org/10.1117/12.2594858

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