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Fluorescence‐Emission Control of Single CdSe Nanocrystals Using Gold‐Modified AFM Tips
Author(s) -
Eckel Rainer,
Walhorn Volker,
Pelargus Christoph,
Martini Jörg,
Enderlein Jörg,
Nann Thomas,
Anselmetti Dario,
Ros Robert
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200600130
Subject(s) - total internal reflection fluorescence microscope , fluorescence , luminescence , nanocrystal , quantum dot , materials science , nanotechnology , fluorescence microscope , exciton , microscopy , atomic force microscopy , plasmon , nanosensor , photoluminescence , optoelectronics , optics , physics , quantum mechanics
A new means of switching the fluorescence emission of a single nanocrystal by intervention of a gold‐modified AFM tip, and the luminescence properties (see TIRFM image) as a function of distance between the single quantum dot and the tip, are presented. Significant luminescence enhancement due to exciton–plasmon coupling was detected. This is important in controlling molecular individuals with applications ranging from microarrays to manipulation of single reporter molecules. TIRFM: Total‐internal‐reflection fluorescence microscopy.
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