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Fingerprint signatures based on nanomagnets as markers in materials for tracing and counterfeit protection

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Abstract

Identification and tracing of objects is a challenge of great current importance. Ideally, this can be achieved via small markers, which equip an object with a fingerprint identity. Herein, we communicate an approach that is based on structural arrangements of magnetic nano-entities to generate a kind of security key in an object. The nano-markers, which are applied as inks, can remotely be read out in a fast and simple way with a GMR sensor and yield an unmistakable signal pattern.

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Authors and Affiliations

  1. Fraunhofer Institute for Nondestructive Testing IZFP, Campus E3.1, 66123, Saarbrücken, Germany

    Klaus Szielasko & Amir Youssef

  2. Fraunhofer Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany

    Dieter Sporn & Karl Mandel

  3. Chair of Chemical Technology of Materials Synthesis, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070, Würzburg, Germany

    Karl Mandel

Authors
  1. Klaus Szielasko
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  2. Amir Youssef
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  3. Dieter Sporn
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  4. Karl Mandel
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Correspondence to Karl Mandel.

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Szielasko, K., Youssef, A., Sporn, D. et al. Fingerprint signatures based on nanomagnets as markers in materials for tracing and counterfeit protection. J Nanopart Res 18, 131 (2016). https://doi.org/10.1007/s11051-016-3443-9

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  • DOI: https://doi.org/10.1007/s11051-016-3443-9

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