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

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Improving the longevity of optically-read quantum dot physical unclonable functions. / Longmate, Kieran; Abdelazim, Nema; Ball, Elliott et al.

In: Scientific Reports, Vol. 11, 10999, 26.05.2021.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Longmate K, Abdelazim N, Ball E, Majaniemi J, Young R. Improving the longevity of optically-read quantum dot physical unclonable functions. Scientific Reports. 2021 May 26;11:10999. doi: 10.1038/s41598-021-90129-2

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@article{abbedd53841e4fb18f5237d35c876437,
title = "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 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 demonstrates 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 1,000 bits of information could be extracted and read after a period of years, therefore providing a compelling solution to the issue of counterfeiting.",
keywords = "Quantum dots, Computer vision",
author = "Kieran Longmate and Nema Abdelazim and Elliott Ball and Joonas Majaniemi and Robert Young",
year = "2021",
month = may,
day = "26",
doi = "10.1038/s41598-021-90129-2",
language = "English",
volume = "11",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Improving the longevity of optically-read quantum dot physical unclonable functions

AU - Longmate, Kieran

AU - Abdelazim, Nema

AU - Ball, Elliott

AU - Majaniemi, Joonas

AU - Young, Robert

PY - 2021/5/26

Y1 - 2021/5/26

N2 - 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 demonstrates 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 1,000 bits of information could be extracted and read after a period of years, therefore providing a compelling solution to the issue of counterfeiting.

AB - 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 demonstrates 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 1,000 bits of information could be extracted and read after a period of years, therefore providing a compelling solution to the issue of counterfeiting.

KW - Quantum dots

KW - Computer vision

U2 - 10.1038/s41598-021-90129-2

DO - 10.1038/s41598-021-90129-2

M3 - Journal article

VL - 11

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 10999

ER -