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Título: | Sub-nanometre resolution in single-molecule photoluminescence imaging |
Autor: | Yang, Ben; Chen, G.; Ghafoor, Atif; Zhang, Yufan; Zhang, Yao CSIC ORCID; Zhang,Yang; Luo, Yi; Yang, Jinlong; Sandoghdar, Vahid; Aizpurua, Javier CSIC ORCID ; Dong, Zhenchao; Hou, J. G. | Fecha de publicación: | 2020 | Editor: | Springer Nature | Citación: | Nature Photonics 14: 693–699 (2020) | Resumen: | 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 photoluminescence imaging of a single phthalocyanine molecule coupled to nanocavity plasmons in a tunnelling junction with a spatial resolution 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. | Versión del editor: | https://doi.org/10.1038/s41566-020-0677-y | URI: | http://hdl.handle.net/10261/235555 | DOI: | 10.1038/s41566-020-0677-y | E-ISSN: | 1749-4893 |
Aparece en las colecciones: | (CFM) Artículos |
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