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Non-destructive and simultaneous development and enhancement of latent fingerprints on stainless steel based on the electrochromic effect of electrodeposited manganese oxides.
Yuan, Chuanjun; Li, Ming; Wang, Meng; Lv, Jiaming; Sun, Yifei; Lu, Tianyi; Jia, Yuxin; Cao, Haijun; Lin, Tianchun.
Afiliación
  • Yuan C; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China. Electronic address: yuancj11@mails.jlu.edu.cn.
  • Li M; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Wang M; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China; Research Center of Crime Governance in the New Era, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Lv J; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Sun Y; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Lu T; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Jia Y; College of Forensic Sciences, Criminal Investigation Police University of China, Shenyang, 110035, China.
  • Cao H; Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China.
  • Lin T; Huadu District Branch, Guangzhou Municipal Public Security Bureau, Guangzhou, 510810, China.
Talanta ; 275: 126148, 2024 Aug 01.
Article en En | MEDLINE | ID: mdl-38705016
ABSTRACT
Latent fingerprints, as one of the most frequently encountered traces in crime scene investigation and also one of the largest sources of forensic evidence, can play a critical role in determining the identity of a person who may be involved in a crime. Due to the invisible characteristic of latent fingerprints, exploring efficient techniques to visualize them (especially the ones resided on metallic surfaces) while retain the biological and chemical information (e.g., touch DNA) has become a multidisciplinary research focus. Herein we reported a new and highly sensitive electrochemical interfacial strategy of simultaneously developing and enhancing latent fingerprints on stainless steel based on synchronous electrodeposition and electrochromism of manganese oxides in a neutral aqueous electrolyte. By utilizing a specially designed device for electrochemical testing and image capture, a series of electrochemical measurements, physical characterization and image analysis have been applied to evaluate the feasibility, development accuracy and enhancement efficacy of the proposed electrochemical system. The qualitative and quantitative analysis on the in situ and ex situ fingerprint images indicates that the three levels of fingerprint features can be precisely developed and effectively enhanced. Forensic DNA typing has also been performed to reveal actual impact of the proposed electrochemical system on subsequent analysis of touch DNA in fingerprint residues. The ratio of detected loci after electrochemical treatment reaches up to 98.5 %, showing non-destructive nature of this fingerprint development and enhancement technique.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Talanta Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Talanta Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos