2022
DOI: 10.1016/j.cej.2022.135601
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A High-Security mutual authentication system based on structural color-based physical unclonable functions labels

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Cited by 39 publications
(27 citation statements)
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“…The rationale of this is as follows. Under the stimulation of physical or chemical signals, such as wetting and mechanical discoloration, there are changes in the period or dielectric constant of the photonic crystal, which causes the optical forbidden band gap to vary. These responsive PCs have a massive potential of application in various fields, such as those of photonic paper, chemical and biological sensors, optically active components and anti-counterfeiting, chromotropic photonic-ionic skin, and so on. Most of the stimulation materials are hydrogels, showing significant advantages based on the characteristic wetting behavior of hydrogels. To manipulate the wettability behavior of responsive photonic crystal hydrogels (RPCHs), there are two major strategies involved: penetration and swelling.…”
Section: Introductionmentioning
confidence: 99%
“…The rationale of this is as follows. Under the stimulation of physical or chemical signals, such as wetting and mechanical discoloration, there are changes in the period or dielectric constant of the photonic crystal, which causes the optical forbidden band gap to vary. These responsive PCs have a massive potential of application in various fields, such as those of photonic paper, chemical and biological sensors, optically active components and anti-counterfeiting, chromotropic photonic-ionic skin, and so on. Most of the stimulation materials are hydrogels, showing significant advantages based on the characteristic wetting behavior of hydrogels. To manipulate the wettability behavior of responsive photonic crystal hydrogels (RPCHs), there are two major strategies involved: penetration and swelling.…”
Section: Introductionmentioning
confidence: 99%
“…The initial design of PUFs was focused on integrated circuits, 7 but their intrinsic limitations, such as long-term chemical stability, side-channel attacks, and encoding capacity, are still under improvement. Alternatively, multidisciplinary approaches based on chemistry, material science, and nanotechnology 8 were undertaken to develop optical PUFs using nanoparticles, 9–13 fluorescent materials, 12,14–18 biomaterials, 17–19 and micro- or nanoarchitectures 19–23 that exhibit optical signals detectable by optical microscopy, 11 Raman spectroscopy, 9,10,20 and fluorescence microscopy. 12,14–18 However, the conventional optical PUFs entail challenges toward practical application from a short lifetime of fluorescent materials, 12,14–18 complex instrumentations, 9,10,19–21 low durability, 9,10,12,14–20 and sophisticated material synthesis.…”
Section: Introductionmentioning
confidence: 99%
“…However, the widely used anticounterfeiting labels are produced by predictable and deterministic coding processes, which means that these tags are likely to be copied by counterfeiters . To overcome this drawback, a new type of anticounterfeiting label based on physical unclonable functions (PUFs; also known as physical one-way functions) has been developed. A PUF is composed of uncopiable elements with inherent random features introduced in the manufacturing process. Since the concept of PUFs was first proposed by Pappu et al in 2002, various optical responses (e.g., reflection, scatterings, diffraction, luminescence, and a mixture of these optical responses ) used in conventional anticounterfeiting labels have also been applied to the PUF anticounterfeiting field.…”
Section: Introductionmentioning
confidence: 99%
“…To overcome this drawback, a new type of anticounterfeiting label based on physical unclonable functions (PUFs; also known as physical one-way functions) has been developed. A PUF is composed of uncopiable elements with inherent random features introduced in the manufacturing process. Since the concept of PUFs was first proposed by Pappu et al in 2002, various optical responses (e.g., reflection, scatterings, diffraction, luminescence, and a mixture of these optical responses ) used in conventional anticounterfeiting labels have also been applied to the PUF anticounterfeiting field. Although photochromic phenomena have been widely discovered, as far as we know, photochromic PUFs have not been reported.…”
Section: Introductionmentioning
confidence: 99%