Fingerprints and Other Ridge Skin Impressions

Champod, Christophe; Lennard, Chris; Margot, Pierre; Stoilovic, Milutin

doi:10.1201/9780203485040

Cited by 373 publications

(449 citation statements)

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“…Forensic casework and research laboratory studies show that latent fingerprint development efficiency can be affected by characteristics of the deposition surfaces as well as the donors [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of substrate surface topography on forensic development of latent fingerprints with iron oxide powder suspension

Jones

Downham

Sears

2010

Surface & Interface Analysis

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Latent fingerprint deposition and effectiveness of detection are strongly affected by the surface on which prints are deposited. Material properties, surface roughness, morphology, chemistry and hydrophobicity can affect the usefulness or efficacy of forensic print development techniques. Established protocols outline appropriate techniques and sequences of processes for broad categories of operational surfaces. This work uses atomic force microscopy and scanning electron microscopy to investigate a series of surfaces classified as smooth, non-porous plastic. Latent prints developed with iron oxide powder suspension are analysed on a range of scales from macro to nano to help elucidate the interaction mechanisms between the latent fingerprint, development agent and underlying surface. Differences between surfaces have a strong effect, even within this single category. We show that both average roughness and topographical feature shape, characterized by skew, kurtosis and lay, are important factors to consider for the processing of latent fingerprints.The pre-peer review version of this article is included in the following pages. Please access the publisher's website for the definitive version Effect of Substrate Surface Topography on Forensic Development of Latent Fingerprints AbstractLatent fingerprint deposition and effectiveness of detection are strongly affected by the surface on which prints are deposited. Material properties, surface roughness, morphology, chemistry and hydrophobicity affect the usefulness or efficacy of forensic print development techniques such as dry powder, powder suspension, cyanoacrylate fuming or vacuum vapour deposition, and lack of development agent adhering to deposited print as well as excess background staining are both problematic. The deposited fingerprint is further affected by the contact conditions and the individual donor. Additional factors affect the detection algorithm such as pre-and post-deposition environment of the surface, humidity, contamination and cleaning agent or solvent spray.This work uses atomic force microscopy and scanning electron microscopy to investigate a series of surfaces and the interaction between latent fingerprint, surface and development agent. Latent prints developed with various techniques are analysed on a range of scales from macro-to nano-to help to elucidate the mechanisms of fingerprint development and aims to aid detection technique enhancement and algorithm improvement.

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Section: Introductionmentioning

confidence: 99%

Effect of substrate surface topography on forensic development of latent fingerprints with iron oxide powder suspension

Jones

Downham

Sears

2010

Surface & Interface Analysis

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“…The imaging of latent fingerprints continues to be an immensely important weapon in the forensic arsenal 1,2 and, despite the maturity of the discipline, work on extending 15 capabilities continues. Recent years have witnessed a number of innovative applications of instrumental and synthetic techniques (e.g.…”

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confidence: 99%

Polymerisation of S2N2 to (SN)x as a tool for the rapid imaging of fingerprints removed from metal surfaces

2010

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“…Although fingerprints are generally identified as the preferred latent print, other prints may also be considered and these include palm prints, foot prints, toe prints and less commonly used ear prints and lip prints (Champod et al 2004). Although until relatively recently, fingerprints were placed within the same category of strength of evidence as DNA this has changed with the outcome of the Shirley McKie investigation (McKie andWallace 2007, Cole 2008).…”

Section: Primary Methods Of Identificationmentioning

confidence: 99%

5. Forensic Identification

Edkins¹

2017

Missing

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Fingerprints and Other Ridge Skin Impressions

Cited by 373 publications

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Effect of substrate surface topography on forensic development of latent fingerprints with iron oxide powder suspension

Effect of substrate surface topography on forensic development of latent fingerprints with iron oxide powder suspension

Polymerisation of S2N2 to (SN)x as a tool for the rapid imaging of fingerprints removed from metal surfaces

5. Forensic Identification

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