Evaluation of the one-step Lumicyano™ used in the visualisation of fingermarks on fabrics

Nicole Beerman, Anne Savage, Lynn Dennany, Joanna Fraser*

*Corresponding author for this work

    Research output: Contribution to journalArticle

    Abstract

    This study consisted of three parts to evaluate the performance of Lumicyano™ on a variety of fabrics. One part assessed the impact of dye percentage (8%, 9% and 10%) on visualisation of fingermark detail and luminescent brightness in split grab marks. A 9% dye produced the highest quality detail of grab impressions with least interference from background fluorescence. The second part investigated the optimal relative humidity (RH, 75-84%) for certain fabric types using Lumicyano on split, six-series depletion fingermarks. It was concluded that the recommended RH of 80% remained the ideal cyanoacrylate fuming environment. The final and third part of this study determined the impact of sequential addition of Basic Yellow 40 (BY40) on Lumicyano compared to traditional cyanoacrylate (CA) followed with BY40 application. Results from this study demonstrated that Lumicyano on its own developed fingermarks with superior quality to Lumicyano with sequential addition of BY40 or traditional cyanoacrylate followed by BY40. Inclusion of more fabrics, donors and longer ageing periods should be explored in future studies to determine what frameworks are best for certain types of fabrics.
    Original languageEnglish
    Pages (from-to)486-497
    Number of pages12
    JournalScience & Justice
    Volume59
    Issue number9
    Early online date6 Jun 2019
    DOIs
    Publication statusPublished - 1 Sep 2019

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    dyes
    crossover interference
    relative humidity
    fluorescence

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    title = "Evaluation of the one-step Lumicyano™ used in the visualisation of fingermarks on fabrics",
    abstract = "This study consisted of three parts to evaluate the performance of Lumicyano™ on a variety of fabrics. One part assessed the impact of dye percentage (8{\%}, 9{\%} and 10{\%}) on visualisation of fingermark detail and luminescent brightness in split grab marks. A 9{\%} dye produced the highest quality detail of grab impressions with least interference from background fluorescence. The second part investigated the optimal relative humidity (RH, 75-84{\%}) for certain fabric types using Lumicyano on split, six-series depletion fingermarks. It was concluded that the recommended RH of 80{\%} remained the ideal cyanoacrylate fuming environment. The final and third part of this study determined the impact of sequential addition of Basic Yellow 40 (BY40) on Lumicyano compared to traditional cyanoacrylate (CA) followed with BY40 application. Results from this study demonstrated that Lumicyano on its own developed fingermarks with superior quality to Lumicyano with sequential addition of BY40 or traditional cyanoacrylate followed by BY40. Inclusion of more fabrics, donors and longer ageing periods should be explored in future studies to determine what frameworks are best for certain types of fabrics.",
    author = "Nicole Beerman and Anne Savage and Lynn Dennany and Joanna Fraser",
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    Evaluation of the one-step Lumicyano™ used in the visualisation of fingermarks on fabrics. / Beerman, Nicole; Savage, Anne; Dennany, Lynn; Fraser, Joanna.

    In: Science & Justice, Vol. 59, No. 9, 01.09.2019, p. 486-497.

    Research output: Contribution to journalArticle

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    AU - Dennany, Lynn

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