Printed Multilayer Microtaggants with Phase Change Nanoparticles for Enhanced Labeling Security

    Authors

    B. Duong; H. L. Liu; C. Li; W. W. Deng; L. Y. Ma;M. Su

    Comments

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    Abbreviated Journal Title

    ACS Appl. Mater. Interfaces

    Keywords

    printable taggants; multilayer microtaggants; phase change; nanoparticles; authentication; ENCODING MICROCARRIERS; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary

    Abstract

    There is an urgent need to develop taggants that can be used to identify objects, prevent fraud, and deter counterfeiting with high reliability, high capacity, and minimal effort. This paper describes a new multilayer covert taggant based on phase change nanoparticles (metals and eutectic alloys). A panel of selected nanoparticles with different melting temperatures have been added in matrix materials together with fluorescent dye and printed on substrates to form micro-/macrofeatures that contain thermal, fluorescence signature, and structural components. The multilayer taggants can greatly enhance security level for many commercial and forensic applications by their extremely large labeling capacity, coding readiness, and covertness.

    Journal Title

    Acs Applied Materials & Interfaces

    Volume

    6

    Issue/Number

    11

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    8909

    Last Page

    8912

    WOS Identifier

    WOS:000337336900114

    ISSN

    1944-8244

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