Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly

Yuanhui Zheng; Cheng Jiang; Soon Hock Ng; Yong Lu; Fei Han; Udo Bach; J. Justin Gooding

doi:10.1002/adma.201505022

Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly

Yuanhui Zheng, Cheng Jiang, Soon Hock Ng, Yong Lu, Fei Han, Udo Bach, J. Justin Gooding

Research output: Contribution to journal › Article › Research › peer-review

119 Citations (Scopus)

Abstract

Researchers demonstrate a low-cost, nondestructive, unclonable anti-counterfeiting strategy that takes advantage of multifunctional fluorescein-embedded silver@silica core-shell NPs as information carriers for graphical and spectral coding. A shadow-mask-lithography-assisted self-assembly method is developed for the fabrication of the plasmonic security labels, in which the multifunctional core-shell nanoparticles (NPs) are electrostatically adsorbed onto an amino-terminated micropattern generated by shadow mask lithography. The random arrangement of discrete NPs on the micropatterns, originating from Brownian motion during the self-assembly, makes the security labels unclonable.

Original language	English
Pages (from-to)	2330-2336
Number of pages	7
Journal	Advanced Materials
Volume	28
Issue number	12
DOIs	https://doi.org/10.1002/adma.201505022
Publication status	Published - 23 Mar 2016

Keywords

core-shell nanoparticles
dark-field and fluorescence microscopy
security labels
self-assembly
surface-enhanced Raman scattering

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10.1002/adma.201505022Licence: Unspecified

Cite this

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title = "Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly",

abstract = "Researchers demonstrate a low-cost, nondestructive, unclonable anti-counterfeiting strategy that takes advantage of multifunctional fluorescein-embedded silver@silica core-shell NPs as information carriers for graphical and spectral coding. A shadow-mask-lithography-assisted self-assembly method is developed for the fabrication of the plasmonic security labels, in which the multifunctional core-shell nanoparticles (NPs) are electrostatically adsorbed onto an amino-terminated micropattern generated by shadow mask lithography. The random arrangement of discrete NPs on the micropatterns, originating from Brownian motion during the self-assembly, makes the security labels unclonable.",

keywords = "core-shell nanoparticles, dark-field and fluorescence microscopy, security labels, self-assembly, surface-enhanced Raman scattering",

author = "Yuanhui Zheng and Cheng Jiang and Ng, {Soon Hock} and Yong Lu and Fei Han and Udo Bach and Gooding, {J. Justin}",

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AU - Zheng, Yuanhui

AU - Jiang, Cheng

AU - Ng, Soon Hock

AU - Lu, Yong

AU - Han, Fei

AU - Bach, Udo

AU - Gooding, J. Justin

PY - 2016/3/23

Y1 - 2016/3/23

N2 - Researchers demonstrate a low-cost, nondestructive, unclonable anti-counterfeiting strategy that takes advantage of multifunctional fluorescein-embedded silver@silica core-shell NPs as information carriers for graphical and spectral coding. A shadow-mask-lithography-assisted self-assembly method is developed for the fabrication of the plasmonic security labels, in which the multifunctional core-shell nanoparticles (NPs) are electrostatically adsorbed onto an amino-terminated micropattern generated by shadow mask lithography. The random arrangement of discrete NPs on the micropatterns, originating from Brownian motion during the self-assembly, makes the security labels unclonable.

AB - Researchers demonstrate a low-cost, nondestructive, unclonable anti-counterfeiting strategy that takes advantage of multifunctional fluorescein-embedded silver@silica core-shell NPs as information carriers for graphical and spectral coding. A shadow-mask-lithography-assisted self-assembly method is developed for the fabrication of the plasmonic security labels, in which the multifunctional core-shell nanoparticles (NPs) are electrostatically adsorbed onto an amino-terminated micropattern generated by shadow mask lithography. The random arrangement of discrete NPs on the micropatterns, originating from Brownian motion during the self-assembly, makes the security labels unclonable.

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KW - surface-enhanced Raman scattering

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Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly

Abstract

Keywords

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ARC Centre of Excellence in Convergent Bio-Nano Science and Technology

Melbourne Centre for Nanofabrication

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Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly

Abstract

Keywords

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Projects

ARC Centre of Excellence in Convergent Bio-Nano Science and Technology

Equipment

Melbourne Centre for Nanofabrication

Cite this