A procedure for the visualization of fingerprint traces on standard and thermal paper using the electron excitation energy of 1,8-diazafluoren-9- one aggregates in a polyvinylpyrrolidone polymer - Publikacja - MOST Wiedzy

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A procedure for the visualization of fingerprint traces on standard and thermal paper using the electron excitation energy of 1,8-diazafluoren-9- one aggregates in a polyvinylpyrrolidone polymer

Abstrakt

The scope of this study is a new procedure for visualizing dactyloscopic traces on an absorbent surface using a solution based on aggregates of 1,8-diazafluoren-9-one (DFO) in a polyvinylpyrrolidone polymer (PVP). An absorbent surface is defined as a plain or thermal paper, which is considered to be a difficult surface due to its varying chemical composition. In the case of the thermal paper surface, the procedure can be further improved by the addition of Au/Ag nanoparticles, which cause an enhancement of the fluorescence phenomenon from the surface of the fingerprint. The procedure requires the use of forensic illuminators and filters to reveal traces at the crime scene. Regarding the visualization of fingerprint prints in the forensic laboratory, the use of a stereo fluorescence microscope provides higher-resolution images when analyzing single patterns in the form of minutiae. The presented procedure is competitive with known, highly toxic current methods for revealing dactyloscopic traces using the DFO molecule. It also represents a key contribution to the development of methods for visualizing traces on thermal paper using fluorescent dyes and suitable control of their spectroscopic properties.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
Z Zagadnień Nauk Sądowych nr 138, strony 111 - 122,
ISSN: 1230-7483
Język:
angielski
Rok wydania:
2024
Opis bibliograficzny:
Lewkowicz A., Czarnomska M., Gruszczyńska E., Karpienko K., Wróbel M., Chabowska M., Bojarski P.: A procedure for the visualization of fingerprint traces on standard and thermal paper using the electron excitation energy of 1,8-diazafluoren-9- one aggregates in a polyvinylpyrrolidone polymer// Z Zagadnień Nauk Sądowych -Vol. 138, (2024), s.111-122
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.4467/12307483pfs.24.007.20180
Źródła finansowania:
  • 2021/41/B/HS5/03250, NCN
Weryfikacja:
Politechnika Gdańska

wyświetlono 24 razy

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