Improving the longevity of optically-read quantum dot physical unclonable functions

Abstract Quantum dot physically unclonable functions (QD-PUFs) provide a promising solution to the issue of counterfeiting. When quantum dots are deposited on a surface to create a token, they form a unique pattern that is unlikely to ever be reproduced in another token that is manufactured using th...

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Autores principales:	Kieran D. Longmate, Nema M. Abdelazim, Elliott M. Ball, Joonas Majaniemi, Robert J. Young
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/96d75cfb503340488d7ed98a1a1546fa
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spelling	oai:doaj.org-article:96d75cfb503340488d7ed98a1a1546fa2021-12-02T16:53:10ZImproving the longevity of optically-read quantum dot physical unclonable functions10.1038/s41598-021-90129-22045-2322https://doaj.org/article/96d75cfb503340488d7ed98a1a1546fa2021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90129-2https://doaj.org/toc/2045-2322Abstract Quantum dot physically unclonable functions (QD-PUFs) provide a promising solution to the issue of counterfeiting. When quantum dots are deposited on a surface to create a token, they form a unique pattern that is unlikely to ever be reproduced in another token that is manufactured using the same process. It would also be an extreme engineering challenge to deterministically place quantum dots to create a forgery of a specific device. The degradation of the optical response of quantum dots over time, however, places a limitation on their practical usefulness. Here we report methods to minimise the degradation of photoluminescence (PL) from InP/ZnS quantum dots suspended in a polymer and demonstrate reliable authentication using a fingerprinting technique to extract a signature from PL, even after significant degradation has occurred. Using these techniques, it was found that the addition of a polylauryl methacrylate (PLMA) copolymer improved the longevity of devices. The best performing example of this was the Polystyrene-PLMA based material. From this, it is projected that 1000 bits of information could be extracted and read after a period of years, therefore providing a compelling solution to the issue of counterfeiting.Kieran D. LongmateNema M. AbdelazimElliott M. BallJoonas MajaniemiRobert J. YoungNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kieran D. Longmate Nema M. Abdelazim Elliott M. Ball Joonas Majaniemi Robert J. Young Improving the longevity of optically-read quantum dot physical unclonable functions
description	Abstract Quantum dot physically unclonable functions (QD-PUFs) provide a promising solution to the issue of counterfeiting. When quantum dots are deposited on a surface to create a token, they form a unique pattern that is unlikely to ever be reproduced in another token that is manufactured using the same process. It would also be an extreme engineering challenge to deterministically place quantum dots to create a forgery of a specific device. The degradation of the optical response of quantum dots over time, however, places a limitation on their practical usefulness. Here we report methods to minimise the degradation of photoluminescence (PL) from InP/ZnS quantum dots suspended in a polymer and demonstrate reliable authentication using a fingerprinting technique to extract a signature from PL, even after significant degradation has occurred. Using these techniques, it was found that the addition of a polylauryl methacrylate (PLMA) copolymer improved the longevity of devices. The best performing example of this was the Polystyrene-PLMA based material. From this, it is projected that 1000 bits of information could be extracted and read after a period of years, therefore providing a compelling solution to the issue of counterfeiting.
format	article
author	Kieran D. Longmate Nema M. Abdelazim Elliott M. Ball Joonas Majaniemi Robert J. Young
author_facet	Kieran D. Longmate Nema M. Abdelazim Elliott M. Ball Joonas Majaniemi Robert J. Young
author_sort	Kieran D. Longmate
title	Improving the longevity of optically-read quantum dot physical unclonable functions
title_short	Improving the longevity of optically-read quantum dot physical unclonable functions
title_full	Improving the longevity of optically-read quantum dot physical unclonable functions
title_fullStr	Improving the longevity of optically-read quantum dot physical unclonable functions
title_full_unstemmed	Improving the longevity of optically-read quantum dot physical unclonable functions
title_sort	improving the longevity of optically-read quantum dot physical unclonable functions
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/96d75cfb503340488d7ed98a1a1546fa
work_keys_str_mv	AT kierandlongmate improvingthelongevityofopticallyreadquantumdotphysicalunclonablefunctions AT nemamabdelazim improvingthelongevityofopticallyreadquantumdotphysicalunclonablefunctions AT elliottmball improvingthelongevityofopticallyreadquantumdotphysicalunclonablefunctions AT joonasmajaniemi improvingthelongevityofopticallyreadquantumdotphysicalunclonablefunctions AT robertjyoung improvingthelongevityofopticallyreadquantumdotphysicalunclonablefunctions
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Improving the longevity of optically-read quantum dot physical unclonable functions

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