Optically Sensitive and Magnetically Identifiable Supraparticles as Indicators of Surface Abrasion

Wenderoth S, Müssig S, Prieschl J, Genin E, Heuzé K, Fidler F, Haddad D, Wintzheimer S, Mandel K (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 22

Pages Range: 2762-2768

Journal Issue: 7

DOI: 10.1021/acs.nanolett.1c04773

Abstract

Identifying and ensuring the integrity of products plays an important role in today's globalized world. Miniaturized information taggants in the packaging surface are therefore required to monitor the product itself instead of applying external labels. Ideally, multiple types of information are stored in such additives. In this work, micrometer-sized core-shell particles (supraparticles) were developed to provide material surfaces with both an identifier and a surface abrasion indication functionality. The core of the supraparticles contains iron oxide nanoparticles that allow identification of the surface with a spectral magnetic code resolved by magnetic particle spectroscopy. The fluorescent silica nanoparticles in the supraparticle shell can be abraded by mechanical stress and resolved by fluorescence spectroscopy. This provides information about the mechanical integrity of the system. The application as surfaces, that contain several types of information in one supraparticle, was demonstrated here by incorporating such bifunctional supraparticles as additives in a surface coating.

Authors with CRIS profile

Involved external institutions

Julius-Maximilians-Universität Würzburg Germany (DE) Université de Bordeaux France (FR) Fraunhofer Institut für Silicatforschung (ISC) Germany (DE) Fraunhofer Development Center X-ray Technology (EZRT) Germany (DE)

How to cite

APA:

Wenderoth, S., Müssig, S., Prieschl, J., Genin, E., Heuzé, K., Fidler, F.,... Mandel, K. (2022). Optically Sensitive and Magnetically Identifiable Supraparticles as Indicators of Surface Abrasion. Nano Letters, 22(7), 2762-2768. https://doi.org/10.1021/acs.nanolett.1c04773

MLA:

Wenderoth, Sarah, et al. "Optically Sensitive and Magnetically Identifiable Supraparticles as Indicators of Surface Abrasion." Nano Letters 22.7 (2022): 2762-2768.

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