On the Development of New Forensic Tools for Detection of Human Skin Prints
https://doi.org/10.30764/1819-2785-2021-4-40-48
Abstract
The article reviews the main physical and physicochemical factors influencing the three-component system “fingerprint powder – prints bearing surface – sweat and grease print substance”. The authors propose new model compositions of fingerprint powders considering the reviewed common patterns: non-magnetic and luminescent magnetic. The features of prints bearing surfaces and developed fingerprint powders have been evaluated by applying electronic microscopy methods (scanning and probe microscopy). The authors have proven that the use of nano- and ultra disperse materials in the developed compositions (carbon nanotubes and shungite) enables to vary the sorption and adhesive capacity of fingerprint powders, which allows detecting fingerprints on varying surfaces with high selectivity toward the sweat and grease print substance and contrasting effect.
About the Authors
V. A. Vasil’ev
Volgograd Academy of the Ministry of Interior of Russia
Vasil’ev Vasilii Alekseevich – Candidate of Chemistry, Associate Professor of the Department of Traceology and Ballistics of the Training and Scientific Complex of Forensic Expert Activities
Volgograd 400089
T. A. Ermakova
Volgograd State University
Russian Federation
Russian Federation
Ermakova Tat’yna Aleksandrovna – Candidate of Chemistry, Associate Professor of the Department of Forensic Expertise and Material Physics
Volgograd 4000062
Yu. A. Druzhinin
Forensic Center of the Ministry of Internal Affairs of the Russian Federation
Druzhinin Yurii Alekseevich – Engineer at the Department of Handwriting Examinations and Technical and Forensic Research of Documents
Moscow 125130
I. B. Afanas’ev
The Russian Federal Centre of Forensic Science of the Ministry of Justice of the Russian Federation
Afanas’ev Il’ya Borisovich – Chief Expert
Moscow 109028
Yu. T. Yudina
Forensic Center of the Ministry of Internal Affairs of the Russian Federation
Yudina Tat’yana Yur’evna – Expert of the Department of Investigations with the Use of Physical Methods
Moscow 125130
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For citations:
Vasil’ev V.A., Ermakova T.A., Druzhinin Yu.A., Afanas’ev I.B., Yudina Yu.T. On the Development of New Forensic Tools for Detection of Human Skin Prints. Theory and Practice of Forensic Science. 2021;16(4):40-48. (In Russ.) https://doi.org/10.30764/1819-2785-2021-4-40-48
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