The thermal visualisation of latent fingermarks on metallic surfaces

Graham Wightman, D. O’Connor

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)
    165 Downloads (Pure)

    Abstract

    Recent published research has lead to improved techniques for recovering latent fingermarks from metallic surfaces. The present study corroborates and extends some of the work carried out by Bond [1], [2] and [3], but an alternative mechanism is proposed for the thermal visualisation of fingermarks based on differential oxidation and the production of interference colours that improve contrast. Fingermarks treated at low temperature could be reheated to enhance recovery, but an upper temperature limit occurs beyond which the mark degrades. The mechanism of enhancement is discussed.
    Original languageEnglish
    Pages (from-to)88-96
    Number of pages9
    JournalForensic Science International
    Volume204
    Issue number1-3
    DOIs
    Publication statusPublished - Jan 2011

    Keywords

    • Forensic science
    • Latent fingerprints
    • Latent fingermarks
    • Metal
    • Metallic surfaces
    • Enhancement
    • Visualisation

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