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Hybrid low-voltage physical unclonable function based on inkjet-printed metal-oxide transistors

  • Modern society is striving for digital connectivity that demands information security. As an emerging technology, printed electronics is a key enabler for novel device types with free form factors, customizability, and the potential for large-area fabrication while being seamlessly integrated into our everyday environment. At present, information security is mainly based on software algorithmsModern society is striving for digital connectivity that demands information security. As an emerging technology, printed electronics is a key enabler for novel device types with free form factors, customizability, and the potential for large-area fabrication while being seamlessly integrated into our everyday environment. At present, information security is mainly based on software algorithms that use pseudo random numbers. In this regard, hardware-intrinsic security primitives, such as physical unclonable functions, are very promising to provide inherent security features comparable to biometrical data. Device-specific, random intrinsic variations are exploited to generate unique secure identifiers. Here, we introduce a hybrid physical unclonable function, combining silicon and printed electronics technologies, based on metal oxide thin film devices. Our system exploits the inherent randomness of printed materials due to surface roughness, film morphology and the resulting electrical characteristics. The security primitive provides high intrinsic variation, is non-volatile, scalable and exhibits nearly ideal uniqueness.show moreshow less

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Author:Alexander ScholzORCiD, Lukas ZimmermannORCiDGND, Ulrich Gengenbach, Liane Koker, Zehua Chen, Horst Hahn, Axel SikoraORCiDGND, Mehdi Baradaran Tahoori, Jasmin Aghassi-HagmannORCiDGND
Publisher:Springer Nature
Year of Publication:2020
Page Number:11
Language:English
Parent Title (English):Nature Communications
Issue:11
ISSN:2041-1723
First Page:Artikel 5543
Document Type:Article (reviewed)
Open Access:Frei zugänglich
Institutes:Bibliografie
Release Date:2020/12/11
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International
DOI:https://doi.org/10.1038/s41467-020-19324-5