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Pinna A, Rocca S, Porcu S, Cardia R, Chiriu D, Carbonaro CM, Corpino R, Tuveri E, Coli P, Ricci PC. Unveiling Hidden Prints: Optically stimulated luminescence for latent fingerprint detection. Heliyon 2023; 9:e22794. [PMID: 38058441 PMCID: PMC10696211 DOI: 10.1016/j.heliyon.2023.e22794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 10/25/2023] [Accepted: 11/20/2023] [Indexed: 12/08/2023] Open
Abstract
Fluorescent lighting and optical techniques have been widely utilized to enhance the detection of latent fingerprints. However, the development of new techniques is imperative to expand the range of surfaces from which latent fingerprints can be detected. When relying on traditional methods, fingerprint evidence can remain undetected or even disregarded due to insufficient detection and limited detail, especially when dealing with a luminescent background. In this study, we propose the utilization of optically stimulated luminescence (OSL) applied to a Ba2SiO4 matrix, co-doped with Eu2+ and Dy3+, as a powerful method for visualizing latent fingerprints on various surfaces, including thin plastic bags, rigid duct tape, thin aluminum foil, and glass slices. This technique effectively eliminates any luminescent background and significantly enhances optical imaging. This represents the first successful application of OSL in the development of latent fingerprints, thus paving the way for more efficient and effective forensic techniques in the future.
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Affiliation(s)
- Andrea Pinna
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Sofia Rocca
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Stefania Porcu
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Roberto Cardia
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Daniele Chiriu
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Carlo M. Carbonaro
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Riccardo Corpino
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
| | - Enrica Tuveri
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Pietro Coli
- Scientific Investigation Department (RIS) of Cagliari, Piazza San Bartolomeo 29, 09126, Cagliari, CA, Italy
| | - Pier Carlo Ricci
- Department of Physics, University of Cagliari, S.p. no. 8 Km 0700, 09042 Monserrato, CA, Italy
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