16 December 2004 Contribution to the age determination of fingerprint constituents using laser fluorescence spectroscopy and confocal laser scanning microscopy
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Abstract
The development of an instrument measuring the age of a fingerprint could raise the effectiveness and reliability of the dactyloscopy and lower the expenses of unnecessary fingerprint analysis. The purpose of the presented investigation is to determine the compounds in a fingerprint residue, which can be used as a time relevant indicator. The identification of the information carrier inside the secreted substance shall determine the main components, which allow age-related statements. A multiphoton excitation is used to determine the age without degenerating or changing samples in any way, so that the evidence is usable for further examination and documentation. Non-invasive fluorescence analysis on the basis of the surface concentration of fingerprint components is presented.
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Stephan Barcikowski, Stephan Barcikowski, Jens Bunte, Jens Bunte, Andreas Ostendorf, Andreas Ostendorf, Joerg Aehnlich, Joerg Aehnlich, Rainer Herrmann, Rainer Herrmann, "Contribution to the age determination of fingerprint constituents using laser fluorescence spectroscopy and confocal laser scanning microscopy", Proc. SPIE 5621, Optical Materials in Defence Systems Technology, (16 December 2004); doi: 10.1117/12.579954; https://doi.org/10.1117/12.579954
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