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  Sub-nanometer resolution in single-molecule photoluminescence imaging

Yang, B., Chen, G., Ghafoor, A., Zhang, Y., Zhang, Y., Zhang, Y., et al. (2020). Sub-nanometer resolution in single-molecule photoluminescence imaging. Nature Photonics, 14. doi:10.1038/s41566-020-0677-y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-9F82-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-EBFD-5
Genre: Journal Article

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 Creators:
Yang, Ben1, Author
Chen, Gong1, Author
Ghafoor, Atif1, Author
Zhang, Yufan1, Author
Zhang, Yao1, Author
Zhang, Yang1, Author
Luo, Yi1, Author
Yang, Jinlong1, Author
Sandoghdar, Vahid2, 3, Author              
Aizpurua, Javier1, Author
Dong, Zenchao1, Author
Hou, J.G.1, Author
Affiliations:
1external, ou_persistent22              
2Sandoghdar Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364722              
3Max-Planck-Zentrum für Physik und Medizin, Max Planck Institute for the Science of Light, Max Planck Society, ou_3164414              

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 Abstract: Ambitions to reach atomic resolution with light have been a major force in shaping nano-optics, whereby a central challenge is achieving highly localized optical fields. A promising approach employs plasmonic nanoantennas, but fluorescence quenching in the vicinity of metallic structures often imposes a strict limit on the attainable spatial resolution, and previous studies have reached only 8 nm resolution in fluorescence mapping. Here, we demonstrate spatially and spectrally resolved photolumines-cence imaging of a single phthalocyanine molecule coupled to nanocavity plasmons in a tunnelling junction with a spatial reso-lution down to ∼8 Å and locally map the molecular exciton energy and linewidth at sub-molecular resolution. This remarkable resolution is achieved through an exquisite nanocavity control, including tip-apex engineering with an atomistic protrusion, quenching management through emitter–metal decoupling and sub-nanometre positioning precision. Our findings provide new routes to optical imaging, spectroscopy and engineering of light–matter interactions at sub-nanometre scales.

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Language(s): eng - English
 Dates: 2020-08-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41566-020-0677-y
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Title: Nature Photonics
Source Genre: Journal
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Publ. Info: London [u.a.] : Nature Publ. Group
Pages: - Volume / Issue: 14 Sequence Number: - Start / End Page: - Identifier: Other: 1749-4885
Other: 1749-4893
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000240270