Hotspot generation for unique identification with nanomaterials

Abstract Nanoscale variations in the structure and composition of an object are an enticing basis for verifying its identity, due to the physical complexity of attempting to reproduce such a system. The biggest practical challenge for nanoscale authentication lies in producing a system that can be a...

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Autores principales:	Nema M. Abdelazim, Matthew J. Fong, Thomas McGrath, Christopher S. Woodhead, Furat Al-Saymari, Ibrahim E. Bagci, Alex T. Jones, Xintai Wang, Robert J. Young
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/29e0b687890f44f3b3691451d17b759b
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spelling	oai:doaj.org-article:29e0b687890f44f3b3691451d17b759b2021-12-02T15:22:57ZHotspot generation for unique identification with nanomaterials10.1038/s41598-020-79644-w2045-2322https://doaj.org/article/29e0b687890f44f3b3691451d17b759b2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79644-whttps://doaj.org/toc/2045-2322Abstract Nanoscale variations in the structure and composition of an object are an enticing basis for verifying its identity, due to the physical complexity of attempting to reproduce such a system. The biggest practical challenge for nanoscale authentication lies in producing a system that can be assessed with a facile measurement. Here, a system is presented in which InP/ZnS quantum dots (QDs) are randomly distributed on a surface of an aluminium-coated substrate with gold nanoparticles (Au NPs). Variations in the local arrangement of the QDs and NPs is shown to lead to interactions between them, which can suppress or enhance fluorescence from the QDs. This position-dependent interaction can be mapped, allowing intensity, emission dynamics, and/or wavelength variations to be used to uniquely identify a specific sample at the nanoscale with a far-field optical measurement. This demonstration could pave the way to producing robust anti-counterfeiting devices.Nema M. AbdelazimMatthew J. FongThomas McGrathChristopher S. WoodheadFurat Al-SaymariIbrahim E. BagciAlex T. JonesXintai WangRobert J. YoungNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nema M. Abdelazim Matthew J. Fong Thomas McGrath Christopher S. Woodhead Furat Al-Saymari Ibrahim E. Bagci Alex T. Jones Xintai Wang Robert J. Young Hotspot generation for unique identification with nanomaterials
description	Abstract Nanoscale variations in the structure and composition of an object are an enticing basis for verifying its identity, due to the physical complexity of attempting to reproduce such a system. The biggest practical challenge for nanoscale authentication lies in producing a system that can be assessed with a facile measurement. Here, a system is presented in which InP/ZnS quantum dots (QDs) are randomly distributed on a surface of an aluminium-coated substrate with gold nanoparticles (Au NPs). Variations in the local arrangement of the QDs and NPs is shown to lead to interactions between them, which can suppress or enhance fluorescence from the QDs. This position-dependent interaction can be mapped, allowing intensity, emission dynamics, and/or wavelength variations to be used to uniquely identify a specific sample at the nanoscale with a far-field optical measurement. This demonstration could pave the way to producing robust anti-counterfeiting devices.
format	article
author	Nema M. Abdelazim Matthew J. Fong Thomas McGrath Christopher S. Woodhead Furat Al-Saymari Ibrahim E. Bagci Alex T. Jones Xintai Wang Robert J. Young
author_facet	Nema M. Abdelazim Matthew J. Fong Thomas McGrath Christopher S. Woodhead Furat Al-Saymari Ibrahim E. Bagci Alex T. Jones Xintai Wang Robert J. Young
author_sort	Nema M. Abdelazim
title	Hotspot generation for unique identification with nanomaterials
title_short	Hotspot generation for unique identification with nanomaterials
title_full	Hotspot generation for unique identification with nanomaterials
title_fullStr	Hotspot generation for unique identification with nanomaterials
title_full_unstemmed	Hotspot generation for unique identification with nanomaterials
title_sort	hotspot generation for unique identification with nanomaterials
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/29e0b687890f44f3b3691451d17b759b
work_keys_str_mv	AT nemamabdelazim hotspotgenerationforuniqueidentificationwithnanomaterials AT matthewjfong hotspotgenerationforuniqueidentificationwithnanomaterials AT thomasmcgrath hotspotgenerationforuniqueidentificationwithnanomaterials AT christopherswoodhead hotspotgenerationforuniqueidentificationwithnanomaterials AT furatalsaymari hotspotgenerationforuniqueidentificationwithnanomaterials AT ibrahimebagci hotspotgenerationforuniqueidentificationwithnanomaterials AT alextjones hotspotgenerationforuniqueidentificationwithnanomaterials AT xintaiwang hotspotgenerationforuniqueidentificationwithnanomaterials AT robertjyoung hotspotgenerationforuniqueidentificationwithnanomaterials
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Hotspot generation for unique identification with nanomaterials

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