Dynamics and mechanism of the physical developer process for visualization of latent fingerprints on paper.
Journal article
Coulston, J.L., Sears, V., Bleay, S. and Hillman, A. R. (2022). Dynamics and mechanism of the physical developer process for visualization of latent fingerprints on paper. Forensic Science International. 333, p. 111195. https://doi.org/10.1016/j.forsciint.2022.111195
| Authors | Coulston, J.L., Sears, V., Bleay, S. and Hillman, A. R. |
|---|---|
| Abstract | We present a detailed mechanistic study of the PD process, focused on the nucleation and growth dynamics of silver particles on fingermarks deposited on a paper surface, from macroscopic (whole fingermark) and microscopic (particle level) perspectives. Conceptually, we separate the outcomes into aspects that precede exposure of the exhibit (relating to the reagent formulation), that relate to the development of the fingermark during immersion in the PD formulation, and that characterise the fully developed mark subsequent to immersion. Initially, dynamic light scattering shows the silver particles in solution to be relatively monodisperse, with a peak particle size of 880 nm. In the second instance, the issue is whether the particles grow to final size in solution then deposit on the surface or deposit as relatively small particles then grow on the surface. To the naked eye, silver deposition is evident after 2 min; corresponding optical profilometry images show evidence of surface-bound particles (mean diameter 2.13 µm) after 30 s. Across the development time (15 min) the particle population density (2.36 ( ± 0.52) x 10 cm ), is independent of time. During this time, the mean particle diameter increases with the square root of development time to 16.09 µm. The dynamics suggest essentially instantaneous (shorter than observation time) nucleation and diffusionally controlled growth. Surface analysis (EDS) shows the expected high (low) levels of silver on ridge detail (in furrows) but no evidence of iron (from the redox component of the formulation) entrapment at any point on the surface. [Abstract copyright: Copyright © 2022 Elsevier B.V. All rights reserved.] |
| Keywords | Forensic science; Physical developer; Latent fingermark; Silver; Nucleation and growth |
| Year | 2022 |
| Journal | Forensic Science International |
| Journal citation | 333, p. 111195 |
| ISSN | 1872-6283 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.forsciint.2022.111195 |
| Publication dates | |
| Online | 20 Jan 2022 |
| Publication process dates | |
| Accepted | 13 Jan 2022 |
| Deposited | 02 Mar 2022 |
| Accepted author manuscript | License File Access Level Open |
Permalink -
https://openresearch.lsbu.ac.uk/item/8z3xq
Download files
123
total views52
total downloads2
views this month3
downloads this month
Export as
Related outputs
Chemistry of Fingerprint Residue
Frick, A. A., Spindler, X and Bleay, S. M. (2023). Chemistry of Fingerprint Residue. in: Encyclopedia of Forensic Sciences, Third Edition, vol. 1 Elsevier. pp. pp. 521–529
Comparison of three active 1,2-indanedione-zinc formulations for fingermark detection in the context of limited resources and supply chain risks in Seychelles
Bouzin, J .T., Horrocks, A.J., Sauzier, G., Bleay, S. and Lewis, S. (2022). Comparison of three active 1,2-indanedione-zinc formulations for fingermark detection in the context of limited resources and supply chain risks in Seychelles. Forensic Chemistry. 30, p. 100439. https://doi.org/10.1016/j.forc.2022.100439Replacing Synperonic® N in the physical developer fingermark visualisation process: Pseudo-operational trial and parameter studies.
Cartledge, E.M., Guo, Z.Y., Bleay, S.M., Sears, V.G. and Hussey, L.J. (2021). Replacing Synperonic® N in the physical developer fingermark visualisation process: Pseudo-operational trial and parameter studies. Forensic Science International. 326, p. 110916. https://doi.org/S0379-0738(21)00236-XThe effect of corrosive substances on fingermark recovery: a pilot study
Bleay, S. and Masterson, A. (2021). The effect of corrosive substances on fingermark recovery: a pilot study. Science & Justice. 61 (5). https://doi.org/10.1016/j.scijus.2021.07.004Mechanistic insight into the fluorescence activity of forensic fingerprinting reagents.
Hunnisett, L., Kelly, P F, Bleay, S., Plasser, F., King, R, McMurchie, B. and Goddard, P. (2021). Mechanistic insight into the fluorescence activity of forensic fingerprinting reagents. The Journal of Chemical Physics. 154 (12), p. 124313. https://doi.org/10.1063/5.0040555New light on old fingermarks: The detection of historic latent fingermarks on old paper documents using 1,2-indanedione/zinc
Bouzin, J., Merendino, J., Bleay, S., Sauzier, G. and Lewis, S. (2020). New light on old fingermarks: The detection of historic latent fingermarks on old paper documents using 1,2-indanedione/zinc. Forensic Science International: Reports. 2, p. 100145. https://doi.org/10.1016/j.fsir.2020.100145The forensic exploitation of fingermark chemistry: a review
Bleay, S., Bailey, M., Croxton, R. and Francese, S. (2020). The forensic exploitation of fingermark chemistry: a review. WIRes Forensic Science. https://doi.org/10.1002/wfs2.1403The visualisation on Pangolin scales using gelatine lifters
Smith, P A, Moorat, G, Reed, J A, Bleay, S, Amaral, M P, Chappell, B, Pamment, N and Plowman, C (2020). The visualisation on Pangolin scales using gelatine lifters. Forensic Science International. 313. https://doi.org/10.1016/j.forsciint.2020.110221Commentary for Chapter 1: Mass Spectrometry Methods for the Recovery of Forensic Intelligence from Fingermarks
Bleay, S (2020). Commentary for Chapter 1: Mass Spectrometry Methods for the Recovery of Forensic Intelligence from Fingermarks. in: Francese, S (ed.) Emerging Technologies for the Analysis of Forensic Traces Springer.Fingerprinting: the UK landscape: processes, stakeholders, and interactions
Earwaker, H C, Charlton, D and Bleay, S (2015). Fingerprinting: the UK landscape: processes, stakeholders, and interactions. Horsham, West Sussex Knowledge Transfer Network.Home Office Fingerprint Source Book
Bandey, H, Bleay, S, Bowman, V, Downham, R, Sears, V, Gibson, A, Selway, C, Ramadani, J and Ciuksza, T (2018). Home Office Fingerprint Source Book. London Home Office.Introduction: Fingerprint Development Techniques: Theory and Application
Bleay, SM, Croxton, RS and De Puit, M (2018). Introduction: Fingerprint Development Techniques: Theory and Application. in: Fingerprint Development Techniques: Theory and Application Chichester Wiley. pp. 1-500The effect of DNA recovery on the subsequent quality of latent fingermarks: a pseudo-operational trial
Fieldhouse, S., Parsons, R., Bleay, S. and Walton-Williams, L. (2019). The effect of DNA recovery on the subsequent quality of latent fingermarks: a pseudo-operational trial. Forensic Science International. 307, p. 110076. https://doi.org/10.1016/j.forsciint.2019.110076An evaluation of the effect of incorporating metal salts into 1,8 diazafluoren-9-one (DFO) formulations for fingermark enhancement
Mayse, K, Sears, VG, Nicolasora, N and Bleay, S (2019). An evaluation of the effect of incorporating metal salts into 1,8 diazafluoren-9-one (DFO) formulations for fingermark enhancement. Science and Justice. 59 (3), pp. 349-358. https://doi.org/10.1016/j.scijus.2019.01.002A comparative evaluation of the disulfur dinitride process for the visualisation of fingermarks on metal surfaces
Bleay, S, Kelly, P, King, R and Thorngate, S (2019). A comparative evaluation of the disulfur dinitride process for the visualisation of fingermarks on metal surfaces. Science and Justice. 59 (6), pp. 606-621. https://doi.org/10.1016/j.scijus.2019.06.011Assessing phosphomolybdic acid as a fingermark enhancement reagent
Davis, LWL, Bleay, SM and Kelly, PF (2018). Assessing phosphomolybdic acid as a fingermark enhancement reagent. Journal of Forensic Identification. 68 (2), pp. 257-280.Fingermark visualisation on metal surfaces: An initial investigation of the influence of surface condition on process effectiveness
Pitera, M., Sears, V.G, Bleay, S.M and Park, S. (2018). Fingermark visualisation on metal surfaces: An initial investigation of the influence of surface condition on process effectiveness. Science and Justice. 58 (5), pp. 372-383. https://doi.org/10.1016/j.scijus.2018.05.005Visualising the past – An evaluation of processes and sequences for fingermark recovery from old documents
Bleay, S, Fitzgerald, L, Sears, V and Kent, T (2018). Visualising the past – An evaluation of processes and sequences for fingermark recovery from old documents. Science and Justice. 59 (2), pp. 125-137. https://doi.org/10.1016/j.scijus.2018.10.005