Photoluminescent Semiconductor Nanocrystals for Fingerprint Detection

    Volume 45, Issue 3 (May 2000)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Page Count: 7


    Roland Menzel, E
    Texas Tech University, Lubbock, TX

    Cheng, KH
    Texas Tech University, Lubbock, TX

    Sudduth, MR
    Texas Tech University, Lubbock, TX

    Murdock, RH
    Texas Tech University, Lubbock, TX

    Ulvick, SJ
    Systems & Processes Engineering Corporation, Austin, TX

    Savoy, SM
    Systems & Processes Engineering Corporation, Austin, TX

    (Received 13 April 1999; accepted 30 July 1999)

    Abstract

    The concept of utilizing photoluminescent semiconductor nanocrystals for latent fingerprint detection, especially in concert with phase-resolved imaging for background fluorescence suppression, is reduced to practice with CdS nanocrystals that are capped with dioctyl sulfosuccinate. The nanocrystals are dissolved in heptane or hexane and are applied in much the same way as staining with fluorescent dye, on articles that have been pre-fumed with cyanoacrylate ester and also on the sticky side of electrical tape without pre-fuming. Since CdS can form a photoluminescent nanocomposite with dendrimers, a feasibility examination of dendrimer tagging of fingerprints has also been conducted.


    Paper ID: JFS14727J

    DOI: 10.1520/JFS14727J

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    Author
    Title Photoluminescent Semiconductor Nanocrystals for Fingerprint Detection
    Symposium , 0000-00-00
    Committee E30