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Proceedings Paper

Single molecule detection for in vitro diagnostics
Author(s): Thomas Kirner; Jörg Ackermann; Harald P. Mathis; Benjamin Greiner; Thomas Tonn; David Tschachojan; Natasa Kukoc-Zivojnov; Sebastian Giehring
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Paper Abstract

In this paper we present a novel highly sensitive detection system for diagnostic applications. The system is designed to meet the needs of medical diagnostics for reliable measurements of pathogens and biomarkers in the low concentration regime. It consists of a confocal detection unit, micro-structured sampling cells, and a "Virtual lab" analysis software. The detection unit works with laser induced fluorescence and is designed to provide accurate and highly sensitive measurement at the single molecule level. Various sampling cells are micro-structured in glass, silicon or polymers to enable measurements under flow and nonflow conditions. Sampling volume is below one microliter. The "Virtual lab" software analyzes the light intensity online according to the patent pending "Accurate Stochastic Fluorescence Spectroscopy" (ASFS) developed by FluIT Biosystems GmbH. Tools for simulation and experiment optimization are included as well. Experimental results for various applications with relevance for in vitro diagnostics will be presented.

Paper Details

Date Published: 21 February 2008
PDF: 9 pages
Proc. SPIE 6862, Single Molecule Spectroscopy and Imaging, 68620H (21 February 2008); doi: 10.1117/12.763637
Show Author Affiliations
Thomas Kirner, FluIT Biosystems GmbH (Germany)
Jörg Ackermann, FluIT Biosystems GmbH (Germany)
Harald P. Mathis, Fraunhofer Institute for Applied Information Technology (Germany)
Benjamin Greiner, Fraunhofer Institute for Applied Information Technology (Germany)
Thomas Tonn, FluIT Biosystems GmbH (Germany)
David Tschachojan, FluIT Biosystems GmbH (Germany)
Natasa Kukoc-Zivojnov, FluIT Biosystems GmbH (Germany)
Sebastian Giehring, FluIT Biosystems GmbH (Germany)

Published in SPIE Proceedings Vol. 6862:
Single Molecule Spectroscopy and Imaging
Jörg Enderlein; Zygmunt K. Gryczynski; Rainer Erdmann, Editor(s)

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