On the Development of New Forensic Tools for Detection of Human Skin Prints

Author:

Vasil’ev V. A.1ORCID,Ermakova T. A.2ORCID,Druzhinin Yu. A.3ORCID,Afanas’ev I. B.4ORCID,Yudina Yu. T.3ORCID

Affiliation:

1. Volgograd Academy of the Ministry of Interior of Russia

2. Volgograd State University

3. Forensic Center of the Ministry of Internal Affairs of the Russian Federation

4. The Russian Federal Centre of Forensic Science of the Ministry of Justice of the Russian Federation

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.

Publisher

Russian Federal Centre of Forensic Science of the Ministry of Justice (RFCFS)

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