Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32727
Visualization of Latent Sweat Fingerprints Deposit on Paper by Infrared Radiation and Blue Light

Authors: Xiaochun Huang, Xuejun Zhao, Yun Zou, Feiyu Yang, Wenbin Liu, Nan Deng, Ming Zhang, Nengbin Cai


A simple device termed infrared radiation (IR) was developed for rapid visualization of sweat fingerprints deposit on paper with blue light (450 nm, 11 W). In this approach, IR serves as the pretreatment device before the sweat fingerprints was illuminated by blue light. An annular blue light source was adopted for visualizing latent sweat fingerprints. Sample fingerprints were examined under various conditions after deposition, and experimental results indicate that the recovery rate of the latent sweat fingerprints is in the range of 50%-100% without chemical treatments. A mechanism for the observed visibility is proposed based on transportation and re-impregnation of fluorescer in paper at the region of water. And further exploratory experimental results gave the full support to the visible mechanism. Therefore, such a method as IR-pretreated in detecting latent fingerprints may be better for examination in the case where biological information of samples is needed for consequent testing.

Keywords: Forensic science, visualization, infrared radiation, blue light, latent sweat fingerprints, detection.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1395


[1] C. Champod, “Fingerprints and other ridge skin impressions,” CRC, Boca Raton, Florida, 2004.
[2] P. Hazarika, “Advance in fingerprint analysis,” Angew. Chem. J., vol. 51, pp. 3524-3531, 2012
[3] X. Tang, “Chemical imaging of latent fingerprints by mass spectrometry based on laser activated electron tunneing,” Anal. Chem. J., vol. 87, pp. 2693-2701, 2015.
[4] O. S. Wolfbeis, “Nanoparticle-enhanced fluorescence imaging of latent fingerprints reveals drug abuse,” Angew. Chem. J., vol. 48, pp. 2268-2269, 2009.
[5] M. J. Choi, “Mcdonagh AM, Maynard P, Roux C. Metal Containing nanoparticles and nano-structured particles in fingermark detection,” Forensic Sci. Int. J., vol. 179, pp. 87-97, 2008.
[6] T. Chen, “Infrared spectroscopic imaging of latent fingerprints and associated forensic evidence,” Analyst J., vol. 134, pp. 1902-1904, 2009.
[7] L. R. Xu, “Imaging latent fingerprints by electrochemiluminescence,” Angew. Chem. J., vol. 51, pp. 8068-8072, 2012.
[8] Y. Li, “Enhancing the visualization of latent fingerprints by electrochemiluminescence of rubrene,” Electrochem. Commun. J., vol.33, pp. 92-95, 2013.
[9] V. R. Salares, “On the detection of fingerprints by laser excited luminescence,” Forensic Sci. Int. J., vol. 14, no. 3, pp. 229–37, 1979.
[10] K. E. Creer, “Operational experience in the detection and photography of latent fingerprints by argon-ion laser,” Forensic Sci. Int. J., vol. 23, no. 2-3, pp. 149–60, 1983.
[11] E. R. Menzel, “Comparison of argon-ion, copper-vapper and frequency-doubled Neodymium Yttrium Aluminum Garnet (Nd:YAG) laser for latent fingerprint development,” J. Forensic Sci. J., vol. 30, no. 2, pp. 383–397, 1985.
[12] N. B. Cai, “Inherent fluorescence detection of latent fingermarks by homemade shortwave ultraviolet laser,” J. Forensic Sci. J., vol. 62, no. 1, pp. 209-212, 2017.
[13] J. W. Bond, “A noninvasive and speculative method of visualizing latent fingerprint deposits on thermal paper,” J. Forensic Sci. J., vol. 60, no. 4, pp. 1034-1039, 2015.
[14] M. Wang, “Fluorescent nanomaterials for the development of latent fingerprints in forensic sciences,” Adv. Funct. Mater. J., vol. 27, pp. 1606243(1-16), 2017.
[15] C. C. Chen, “Latent fingerprint development on thermal paper using traditional nihydrin and 1,2-indanedione,” J. Forensic Sci. J., vol. 61, no. 1, pp. 219-225, 2016.
[16] J. H. Yoon, “Visualization of sweat fingerprints on various surface using a conjugated polyelectrolyte,” Appl. Mater. Interfaces J., vol. 8, pp. 24025-24029, 2016.
[17] K. Song, “Photoacustic and colorimetric visualization of latent fingerprints,” ACS Nano J., vol. 9, no. 12, pp. 12344-12348, 2015.
[18] C. Ricci, “Chemical imaging of latent fingerprint residues,” Appl. Spectroscopy J., vol. 61, no. 5, pp. 514-522, 2007.
[19] J. J. Zhao, “High-resolution and universal visualization of latent fingerprints based on aptamer-functionalized core-shell nanoparticles with embedded SERS reporters,” Appl. Mater. Interfaces J., vol. 8, pp. 14389-14395, 2016.
[20] P. J. Wood, “Understanding immunology,” 2ednd edPearson Education, Upper Saddle River, New Jersey, 2006.
[21] A. Girod, “Composition of fingermark residue: a qualitative and quantitative review,” Forensic Sci. Int. J., vol. 223, pp. 10–24, 2012.
[22] V. Causin, “The discrimination potential of diffuse-reflectance ultravioletvisible-near infrared spectrophotometry for the forensic analysis of paper,” Forensic Sci. Int. J., vol. 216, pp. 163–167, 2012.