Abstract
We examine the optical near-field interaction between different types of scanning tips and single oriented fluorescent molecules. We demonstrate the influence of a tip on the excitation intensity as well as on the integrated fluorescence signal, the excited state lifetime, and the angular emission of single molecules. By using a standard model describing the radiation of an oscillating dipole close to a nanosphere or a flat interface, we interpret our observations and describe some central criteria for obtaining fluorescence enhancement or quenching.
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33.80.-b; 07.79.Fc; 78.90.+t
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Kühn, S., Sandoghdar, V. Modification of single molecule fluorescence by a scanning probe. Appl. Phys. B 84, 211–217 (2006). https://doi.org/10.1007/s00340-006-2233-y
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DOI: https://doi.org/10.1007/s00340-006-2233-y