title: Unclonable Plasmonic Security Labels Achieved by Shadow-Mask-Lithography-Assisted Self-Assembly.
abstract: An unclonable plasmonic anti-counterfeiting strategy is demonstrated, which involves the use of molecule-embedded metal@silica core-shell nanoparticles as information carriers. A shadow-mask-lithography-assisted self-assembly is developed for the fabrication of the plasmonic security labels. The produced security labels show multiple sets of coding information that are highly unique, technically unreplicable, and can be robustly decoded by portable microscopes within seconds.
authors.affiliation: School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.|ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.
authors.forename: Yuanhui
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
authors.forename: Cheng
authors.initials: C
authors.lastname: Jiang
authors.affiliation: Department of Materials Engineering, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.|The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, VIC, 3168, Australia.
authors.forename: Soon Hock
authors.initials: SH
authors.lastname: Ng
authors.affiliation: School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
authors.forename: Yong
authors.initials: Y
authors.lastname: Lu
authors.affiliation: School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.
authors.forename: Fei
authors.initials: F
authors.lastname: Han
authors.affiliation: Department of Materials Engineering, Monash University, Wellington Road, Clayton, VIC, 3800, Australia.|The Melbourne Centre for Nanofabrication, 151 Wellington Road, Clayton, VIC, 3168, Australia.
authors.forename: Udo
authors.initials: U
authors.lastname: Bach
authors.affiliation: School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW, 2052, Australia.|ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, School of Chemistry, The University of New South Wales, Sydney, NSW, 2052, Australia.
authors.forename: J Justin
authors.initials: JJ
authors.lastname: Gooding
mesh_terms: D019793:Fluorescein / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D010316:Particle Size; D056951:Photoelectron Spectroscopy; D012822:Silicon Dioxide / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013059:Spectrum Analysis, Raman
chemical_list: D012834:Silver; D006046:Gold; D012822:Silicon Dioxide; D019793:Fluorescein
keywords: core-shell nanoparticles; dark-field and fluorescence microscopy; security labels; self-assembly; surface-enhanced Raman scattering