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Nanoplasmonic Imaging of Latent Fingerprints and Identification of Cocaine

Authors

  • Kun Li,

    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
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  • Weiwei Qin,

    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
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  • Fan Li,

    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
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  • Prof. Xingchun Zhao,

    1. Institute of Forensic Science, Ministry of Public Security, Beijing (China)
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  • Dr. Bowei Jiang,

    1. Institute of Forensic Science, Ministry of Public Security, Beijing (China)
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  • Dr. Kun Wang,

    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
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  • Dr. Suhui Deng,

    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
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  • Prof. Chunhai Fan,

    Corresponding author
    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
    • Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)

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  • Prof. Di Li

    Corresponding author
    1. Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)
    • Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 (China)

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  • This work was supported by the National Basic Research Program of China (973 program, 2013CB932803, 2012CB825800, and 2013CB933800), the National Natural Science Foundation of China (21075128, 21227804, and 21222508), and the Shanghai Municipal Commission for Science and Technology (13QH1402300).

Abstract

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Search for traces: Aptamer-bound Au nanoparticles (Au NPs) were used to provide high-resolution dark-field microscopy images of latent fingerprints (LFPs) with level 2 and level 3 details. Furthermore, the cocaine-induced aggregation of Au NPs results in a true green-to-red color change of the scattered light, providing a quasi-quantative method to identify cocaine loadings in LFPs.

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