Watching a single fluorophore molecule walk into a plasmonic hotspot
Plasmonic nanoantennas allow for enhancing the spontaneous emission, altering the emission polarization, and shaping the radiation pattern of quantum emitters. A critical challenge for the experimental realizations is positioning a single emitter into the hotspot of a plasmonic antenna with nanoscal...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
March 19, 2019
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| In: |
ACS photonics
Year: 2019, Volume: 6, Issue: 4, Pages: 985-993 |
| ISSN: | 2330-4022 |
| DOI: | 10.1021/acsphotonics.8b01737 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1021/acsphotonics.8b01737
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| Author Notes: | Ling Xin, Mo Lu, Steffen Both, Markus Pfeiffer, Maximilian J. Urban, Chao Zhou, Hao Yan, Thomas Weiss, Na Liu, and Klas Lindfors |
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| 520 | |a Plasmonic nanoantennas allow for enhancing the spontaneous emission, altering the emission polarization, and shaping the radiation pattern of quantum emitters. A critical challenge for the experimental realizations is positioning a single emitter into the hotspot of a plasmonic antenna with nanoscale accuracy. We demonstrate a dynamic light–matter interaction nanosystem enabled by the DNA origami technique. A single fluorophore molecule can autonomously and unidirectionally walk into the hotspot of a plasmonic nanoantenna along a designated origami track. Successive fluorescence intensity increase and lifetime reduction are in situ monitored using single-molecule fluorescence spectroscopy, while the fluorophore walker gradually approaches and eventually enters the plasmonic hotspot. Our scheme offers a dynamic platform, which can be used to develop functional materials, investigate intriguing light–matter interaction phenomena, and serve as prototype system for examining theoretical models. | ||
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