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Plasmonic nanoprobes for stimulated emission depletion nanoscopy

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Title: Plasmonic nanoprobes for stimulated emission depletion nanoscopy
Authors: Cortés, E
Huidobro, PA
Sinclair, HG
Guldbrand, S
Peveler, WJ
Davies, T
Parrinello, S
Görlitz, F
Dunsby, C
Neil, MAA
Sivan, Y
Parkin, IP
French, PMW
Maier, SA
Item Type: Journal Article
Abstract: Plasmonic nanoparticles influence the absorption and emission processes of nearby emitters due to local enhancements of the illuminating radiation and the photonic density of states. Here, we use the plasmon resonance of metal nanoparticles in order to enhance the stimulated depletion of excited molecules for super-resolved nanoscopy. We demonstrate stimulated emission depletion (STED) nanoscopy with gold nanorods with a long axis of only 26 nm and a width of 8 nm. These particles provide an enhancement of up to 50% of the resolution compared to fluorescent-only probes without plasmonic components irradiated with the same depletion power. The nanoparticle-assisted STED probes reported here represent a ∼2 × 103 reduction in probe volume compared to previously used nanoparticles. Finally, we demonstrate their application toward plasmon-assisted STED cellular imaging at low-depletion powers, and we also discuss their current limitations.
Issue Date: 30-Oct-2016
Date of Acceptance: 30-Oct-2016
URI: http://hdl.handle.net/10044/1/42326
DOI: https://dx.doi.org/10.1021/acsnano.6b06361
ISSN: 1936-0851
Publisher: American Chemical Society
Start Page: 10454
End Page: 10461
Journal / Book Title: ACS Nano
Volume: 10
Issue: 11
Copyright Statement: © 2016 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acsnano.6b06361.
Sponsor/Funder: The Royal Society
The Leverhulme Trust
Engineering & Physical Science Research Council (E
Funder's Grant Number: WM110079
RPG-2013-119
EP/M013812/1
Keywords: STED nanoscopy
bioimaging
nanorods
plasmonic nanoparticles
super resolution
Nanoscience & Nanotechnology
MD Multidisciplinary
Publication Status: Published
Appears in Collections:Physics
Photonics
Experimental Solid State
Faculty of Natural Sciences



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