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Direct Light-Driven Modulation of Luminescence from Mn-Doped ZnSe Quantum Dots

Authors

  • Scott E. Irvine Dr.,

    1. Department of Nanobiophotonics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Fax: (+49) 551-201-2505
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  • Thorsten Staudt,

    1. Department of Nanobiophotonics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Fax: (+49) 551-201-2505
    2. German Cancer Research Center, High Resolution Optical Microscopy Division, Bioquant-Zentrum, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
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  • Eva Rittweger,

    1. Department of Nanobiophotonics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Fax: (+49) 551-201-2505
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  • Johann Engelhardt Dr.,

    1. German Cancer Research Center, High Resolution Optical Microscopy Division, Bioquant-Zentrum, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
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  • Stefan W. Hell Prof. Dr.

    1. Department of Nanobiophotonics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Göttingen, Germany, Fax: (+49) 551-201-2505
    2. German Cancer Research Center, High Resolution Optical Microscopy Division, Bioquant-Zentrum, Im Neuenheimer Feld 267, 69120 Heidelberg, Germany
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  • S.E.I. and T.S. contributed equally to this work. This work was supported by the European Union through the SPOTLITE project (New and Emerging Science and Technology). S.E.I. also gratefully acknowledges support from the Natural Sciences and Engineering Research Council of Canada (NSERC).

Abstract

original image

Unbegrenzte Möglichkeiten: Die lichtgesteuerte Modulation der Fluoreszenz Mn-dotierter kristalliner ZnSe-Quantenpunkte beruht auf der Absorption im angeregten Zustand in direkter Konkurrenz zur spontanen Emission. Eine solche optische Steuerung elektronischer Übergänge ermöglicht Fernfeld-Fluoreszenzmikroskopieanalysen mit deutlich höherer Auflösung (45 nm, rot) als konfokale Verfahren (200 nm, blau).

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