Nanoscopy through a plasmonic nanolens.
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Authors
Horton, Matthew J
Ojambati, Femi
Deacon, William M
Publication Date
2020-02Journal Title
Proceedings of the National Academy of Sciences of the United States of America
ISSN
0027-8424
Publisher
National Academy of Sciences
Volume
117
Issue
5
Pages
2275-2281
Language
eng
Type
Article
This Version
AM
Physical Medium
Print-Electronic
Metadata
Show full item recordCitation
Horton, M. J., Ojambati, F., Chikkaraddy, R., Deacon, W. M., Kongsuwan, N., Demetriadou, A., Hess, O., & et al. (2020). Nanoscopy through a plasmonic nanolens.. Proceedings of the National Academy of Sciences of the United States of America, 117 (5), 2275-2281. https://doi.org/10.1073/pnas.1914713117
Abstract
Plasmonics now delivers sensors capable of detecting single-molecules. The emission enhancements and nanometre-scale optical confinement achieved by these metallic nanostructures vastly increase spectroscopic sensitivity, enabling real-time tracking. However, the interaction of light with such nanostructures typically loses all information about the spatial location of molecules within a plasmonic hot spot. Here we show that ultrathin plasmonic nanogaps support complete mode sets which strongly influence the far-field emission patterns of embedded emitters, and allow the reconstruction of dipole positions with 1 nm precision. Emitters in different locations radiate spots, rings and askew halo images, arising from interference of two radiating antenna modes differently coupling light out of the nanogap, highlighting the imaging potential of these plasmonic ‘crystal balls’. Emitters at the centre are now found to live indefinitely, because they radiate so rapidly.
Sponsorship
We acknowledge EPSRC grants EP/N016920/1, EP/L027151/1, and NanoDTC EP/L015978/1. OSO acknowledges support of Rubicon fellowship from the Netherlands Organisation for Scientific Research, and RC thanks support from Trinity College Cambridge.
Funder references
EPSRC (EP/L027151/1)
EPSRC (EP/N016920/1)
EPSRC (EP/P029426/1)
EPSRC (EP/L015978/1)
Identifiers
External DOI: https://doi.org/10.1073/pnas.1914713117
This record's URL: https://www.repository.cam.ac.uk/handle/1810/300174
Rights
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