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Proceedings Paper

Correlating structure and fluorescence dynamics of quantum dot clusters using super-resolution imaging
Author(s): Duncan P. Ryan; Peter M. Goodwin; Chris J. Sheehan; Kevin J. Whitcomb; Martin P. Gelfand; Alan Van Orden
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Paper Abstract

Clusters of quantum dots exhibit fluorescent behavior that differs from that of individual particles. Bulk measurements involving a large number of particles obscure these dynamics. Synthesizing clusters with 5–10 particles enables the study of collective behavior where single-molecule fluorescence techniques can be applied. Super-resolution microscopy of these clusters correlated with SEM imaging reveals the influence of geometry and structure on emission dynamics. Signatures of energy transfer can be seen in the form of enhanced blinking. Motion of the emission center of the cluster is tracked, made possible by the independent blinking events of the individual particles. Discrete steps in the localization are observed as random switching between various on/off configurations moves the location of the emission center.

Paper Details

Date Published: 1 March 2016
PDF: 8 pages
Proc. SPIE 9714, Single Molecule Spectroscopy and Superresolution Imaging IX, 97140T (1 March 2016); doi: 10.1117/12.2211150
Show Author Affiliations
Duncan P. Ryan, Colorado State Univ. (United States)
Peter M. Goodwin, Los Alamos National Lab. (United States)
Chris J. Sheehan, Los Alamos National Lab. (United States)
Kevin J. Whitcomb, Colorado State Univ. (United States)
Martin P. Gelfand, Colorado State Univ. (United States)
Alan Van Orden, Colorado State Univ. (United States)

Published in SPIE Proceedings Vol. 9714:
Single Molecule Spectroscopy and Superresolution Imaging IX
Jörg Enderlein; Ingo Gregor; Zygmunt Karol Gryczynski; Rainer Erdmann; Felix Koberling, Editor(s)

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