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An Investigation into the Effects of Force Applied During Deposition on Latent Fingermarks and Inked Fingerprints Using a Variable Force Fingerprint Sampler

FIELDHOUSE, Sarah (2014) An Investigation into the Effects of Force Applied During Deposition on Latent Fingermarks and Inked Fingerprints Using a Variable Force Fingerprint Sampler. Journal of Forensic Sciences. ISSN 0022-1198

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Abstract or description

Physical factors, including the magnitude of the force applied during fingermark deposition, may affect friction ridge surface
area and clarity, and the quantity of residue transferred. Consistency between fingermarks may be required; for example, in research projects,
yet differences between marks are likely to exist when physical factors are not controlled. Inked fingerprints and latent fingermarks were deposited
at 1–10 N at 1 N increments using a variable force fingerprint sampler to control the force, angle of friction ridge and surface contact, and
the duration of friction ridge and surface contact. Statistically significant differences existed between the length and width measurements of the
inked prints (p ≤ 0.05), particularly at lower forces. Scanning electron microscopy and surface plot analysis demonstrated how differences in
force applied during deposition affected ridge surface area, displacement of latent residue, and differences in the quantity of residue transferred.
Consistency between inked prints was demonstrated at equivalent forces.

Item Type: Article
Uncontrolled Keywords: forensic science, fingerprints, latent fingermarks, inked fingerprints, Cyanoacrylate fuming, scanning electron microscopy
Subjects: F400 Forensic and Archaeological Science
Faculty: Previous Faculty of Computing, Engineering and Sciences > Sciences
Depositing User: Sarah FIELDHOUSE
Date Deposited: 23 Feb 2016 12:44
Last Modified: 23 Feb 2016 12:44
URI: http://eprints.staffs.ac.uk/id/eprint/2268

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