Fingerprint's Third Dimension: The Depth and Shape of Fingerprints Penetration into Paper—Cross Section Examination by Fluorescence Microscopy

    Volume 49, Issue 5 (September 2004)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Published Online: 1 September 2004

    Page Count: 5


    Zaban, A
    Bar Ilan University, Ramat Gan,

    Almog, J
    The Hebrew University of Jerusalem, Jerusalem,

    Berenstein, L
    Bar Ilan University, Ramat Gan,

    Azoury, M
    Latent Fingerprint Laboratory, Jerusalem,

    Elmaliah, Y
    The Hebrew University of Jerusalem, Jerusalem,

    (Received 10 January 2004; accepted 24 April 2004)

    Abstract

    In an attempt to maximize the yield of latent fingerprints from paper items, we conducted a study of a fundamental process between fingerprint deposits and paper. Fingerprint ridges have been observed in the cross section of paper by fluorescence microscopy. It was possible to see, for the first time, how residue from fingerprint ridges is embedded in paper. Undeveloped, latent fingerprints, as well as latent prints developed by the two fluorogenic reagents, DFO and 1,2-indanedione, have been examined. The shape and depth of penetration of fingerprints vary with different types of paper. An inverse relationship between the smoothness of the paper and the penetration depth was observed: higher smoothness values result in lower depths of penetration. High quality prints appear to correlate with an optimal penetration depth—between 40 and 60 microns.


    Paper ID: JFS2004009

    DOI: 10.1520/JFS2004009

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    Title Fingerprint's Third Dimension: The Depth and Shape of Fingerprints Penetration into Paper—Cross Section Examination by Fluorescence Microscopy
    Symposium , 0000-00-00
    Committee E30