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Bécue A, Champod C. Interpol review of fingermarks and other body impressions 2019 - 2022). Forensic Sci Int Synerg 2022; 6:100304. [PMID: 36636235 PMCID: PMC9830181 DOI: 10.1016/j.fsisyn.2022.100304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Andy Bécue
- University of Lausanne, School of Criminal Justice, Faculty of Law Criminal Justice and Public Administration, Switzerland
| | - Christophe Champod
- University of Lausanne, School of Criminal Justice, Faculty of Law Criminal Justice and Public Administration, Switzerland
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Wang X, Liao T, Wang H, Hao H, Yang Q, Zhou H, Ma Y, Zhi M, Wang J, Fan R. Novel Organic-Inorganic Hybrid Polystyrene Nanoparticles with Trichromatic Luminescence for the Detection of Latent Fingerprints. Int J Anal Chem 2022; 2022:2230360. [PMID: 35295922 PMCID: PMC8920635 DOI: 10.1155/2022/2230360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 01/19/2022] [Indexed: 11/18/2022] Open
Abstract
This article explored the application of novel organic-inorganic hybrid polystyrene nanoparticles (PSNPs) with trichromatic luminescence for the detection of latent fingerprints. The PSNPs were synthesized by encapsulated Eu(DBM)3phen, coumarin 6, and FDBT into the polystyrene nanoparticles through the swelling method and applied them to visualize latent fingerprints. The PSNPs had a spherical morphology with an average diameter of 310.7 nm, and they emitted trichromatic fluorescence (525 nm/570 nm/610 nm) under 365 nm excitation wavelength with green/yellow/red color under filters. They were less likely to aggregate, float or stain the background when treating fingerprints. The developed fingerprints with excellent clarity of ridges and contrast could be viewed, and the digital magnification of fluorescence-developed fingerprints provided more minutiae details about some regional patterns. The colorimetric and fluorescent trichromatic light could provide complementary signals without the background interference from fluorescent substrates and/or complex multicolor surfaces, which improved the applicability of fluorescent nanoparticles for fingerprints development. PSNPs are promising for the detection of latent fingerprints and practical criminal investigations with their ease of operation, eco-friendly properties, and excellent trichromatic optical performance.
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Affiliation(s)
- Xiao Wang
- Institute of Public Security, Northwest University of Political Science and Law, Xi'an 710122, Shaanxi, China
| | - Tao Liao
- Shenzhen WWHS Biotech. Inc, Shenzhen 518100, China
| | - Haiyan Wang
- Shanxi Datong University, College of Chemistry and Chemical Engineering, Datong, Shanxi 037009, China
| | - Hongxia Hao
- Key Laboratory of Evidence Science, China University of Political Science and Law, Ministry of Education, Collaborative Innovation Center of Judicial Civilization, Beijing 100088,, China
| | - Qinglai Yang
- Center for Molecular Imaging Probe, Cancer Research Institute, University of South China, Hengyang, Hunan 421001, China
| | - Hong Zhou
- Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - Yu Ma
- Nanjing Jinling Forensic Science Service, Nanjing 210019, Jiangsu, China
| | - Minjie Zhi
- Institute of Public Security, Northwest University of Political Science and Law, Xi'an 710122, Shaanxi, China
| | - Jiahao Wang
- Institute of Public Security, Northwest University of Political Science and Law, Xi'an 710122, Shaanxi, China
| | - Ruihang Fan
- Institute of Public Security, Northwest University of Political Science and Law, Xi'an 710122, Shaanxi, China
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