Nanoscopy through a plasmonic nanolens

Matthew  Horton; Oluwafemi Ojambati; Rohit Chikkaraddy; William Deacon; Nuttawut Kongsuwan; Angela Demetriadou; Ortwin Hess; Jeremy J. Baumberg

doi:10.1073/pnas.1914713117

Nanoscopy through a plasmonic nanolens

Matthew Horton, Oluwafemi Ojambati, Rohit Chikkaraddy, William Deacon, Nuttawut Kongsuwan, Angela Demetriadou, Ortwin Hess, Jeremy J. Baumberg^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

168 Downloads (Pure)

Abstract

Plasmonics now delivers sensors capable of detecting single molecules. The emission enhancements and nanometer-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 2 radiating antenna modes differently coupling light out of the nanogap, highlighting the imaging potential of these plasmonic “crystal balls.” Emitters at the center are now found to live indefinitely, because they radiate so rapidly.

Original language	English
Pages (from-to)	2275-2281
Number of pages	7
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	117
Issue number	5
Early online date	15 Jan 2020
DOIs	https://doi.org/10.1073/pnas.1914713117
Publication status	Published - 4 Feb 2020

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS. This work was supported by Engineering and Physical Sciences Research Council Grants EP/N016920/1, EP/P029426/1, EP/L027151/1, and NanoDTC EP/L015978/1. O.S.O. was supported by a Rubicon fellowship from the Netherlands Organisation for Scientific Research, and R.C. was supported by Trinity College Cambridge. A.D. acknowledges support from a Royal Society University Research Fellowship URF\R1\180097 and Royal Society Research Fellows Enhancement Award RGF\EA\181038.

Publisher Copyright:
© 2020 National Academy of Sciences. All rights reserved.

Keywords

nanogap
nanoscopy
plasmonics
single molecule
super-resolution

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Horton_et_al_Nanoscopy_through_a_plasmonic_nano-lens_PNAS_2019Final published version, 1.74 MBLicence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

https://doi.org/10.1073/pnas.1914713117Licence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

Plasmons and Molecules: Photochemistry in the Light-Matter Strong Coupling Regime (Dr Angela Demetriadou)
Demetriadou, A.
The Royal Society
1/10/18 → 16/02/24
Project: Research Councils

Cite this

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title = "Nanoscopy through a plasmonic nanolens",

abstract = "Plasmonics now delivers sensors capable of detecting single molecules. The emission enhancements and nanometer-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 2 radiating antenna modes differently coupling light out of the nanogap, highlighting the imaging potential of these plasmonic “crystal balls.” Emitters at the center are now found to live indefinitely, because they radiate so rapidly.",

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Nanoscopy through a plasmonic nanolens

Abstract

Bibliographical note

Keywords

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Plasmons and Molecules: Photochemistry in the Light-Matter Strong Coupling Regime (Dr Angela Demetriadou)

Cite this