NDLI: Invisible Thermoplasmonic Indium Tin Oxide Nanoparticle Ink for Anti-counterfeiting Applications.

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Invisible Thermoplasmonic Indium Tin Oxide Nanoparticle Ink for Anti-counterfeiting Applications.

Content Provider	Europe PMC
Author	Mazzotta, Arianna Gabbani, Alessio Carlotti, Marco Ruggeri, Marina Fantechi, Elvira Ottomaniello, Andrea Pineider, Francesco Pucci, Andrea Mattoli, Virgilio
Copyright Year	2022
Abstract	In this study, we present a thermoplasmonic transparentink basedon a colloidal dispersion of indium tin oxide (ITO) nanoparticles,which can offer several advantages as anti-counterfeiting technology.The custom ink could be directly printed on several substrates, andit is transparent under visible light but is able to generate heatby absorption of NIR radiation. Dynamic temperature mapping of theprinted motifs was performed by using a thermal camera while irradiatingthe samples with an IR lamp. The printed samples presented fine features(in the order of 75 μm) and high thermal resolution (of about250 μm). The findings are supported by thermal finite-elementsimulations, which also allow us to explore the effect of differentsubstrate characteristics on the thermal readout. Finally, we builta demonstrator comprising a QR Code invisible to the naked eye, whichbecame visible in thermal images under NIR radiation. The high transparencyof the printed ink and the high speed of the thermal reading (figuresappear/disappear in less than 1 s) offer an extremely promising strategytoward low-cost, scalable production of photothermally active invisiblelabels.
ISSN	19448244
Journal	ACS Applied Materials & Interfaces
Volume Number	14
PubMed Central reference number	PMC9354021
Issue Number	30
PubMed reference number	35867887
e-ISSN	19448252
DOI	10.1021/acsami.2c10864
Language	English
Publisher	American Chemical Society
Publisher Date	2022-07-22
Access Restriction	Open
Rights License	Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2022 The Authors. Published by American Chemical Society
Subject Keyword	thermoplasmonics indium tin oxide heavilydoped semiconductor nanoparticles ink-jet printing anti-counterfeiting
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Medicine Materials Science

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