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Visualization of Fingermarks Deposits on Untreated Thermal Paper Exploiting the Near Infrared Luminescence.
- Source :
- Journal of Forensic Sciences; Jan2020, Vol. 65 Issue 1, p238-247, 10p
- Publication Year :
- 2020
-
Abstract
- Thermal paper is widely used as a print medium for different applications but it constitutes a tricky substrate for fingermark visualization. An earlier work (J Forensic Sci 2015;60:1034) reported how to visualize fingermarks on untreated thermal paper by illuminating the item with a UV‐A light source. In the present paper, the potential of the near infrared (NIR) luminescence has been tested on thermal paper compared to the mentioned method. A controlled study was carried out utilizing eccrine enriched fingermarks. The promising outcomes obtained were further confirmed by performing a pseudo‐operational trial. Data clearly showed that the use of the NIR filter gave better results. Finally, preliminary tests suggested a different mechanism of reaction induced by fingermarks with respect to the one behind the thermal printing. Thus, NIR luminescence represents a refinement to the suite of optical examination processes, including the potential to increase the number of marks recovered in a noncontact, nondestructive way. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00221198
- Volume :
- 65
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Journal of Forensic Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 141001766
- Full Text :
- https://doi.org/10.1111/1556-4029.14071