Abstract
In recent years, laser induced fluorescence detection and spectroscopy of single molecules (SMD) has seen a tremendous development. Besides fundamental research on individual molecular systems, practical applications of this sensitive detection technique for analytical and diagnostic purposes are becoming more and more important. For a wider applicability of the SMD technique it is desirable to detect not only the presence or absence of a molecule within a given detection volume,, but also t be able to quantify this fluorescence absolutely. Modified flow cytometry system for SMD that are ensuring such a quantifiable fluorescence detection of single molecules are already successfully applied for e.g. DNA fragment sizing. In our talk, we present a modified confocal detection set-up for performing SMD on surfaces that aims at a quantified detection of single molecule fluorescence. First experimental results presented and emerging problems are discussed.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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