Tri-channel tubular lanthanide nanocomposites for multimodal anti-counterfeiting

Xu, Jun; Zhu, Tinghui; Chen, Xiangzheng; Zhao, Dan; Li, Yongxin; Zhang, Lina; Bi, Ning; Gou, Jian; Jia, Lei

doi:10.1016/j.jlumin.2022.119647

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…Specifically, for the application of anticounterfeiting marks, the common methods at present include ink anticounterfeiting, laser holographic anticounterfeiting, and functional material anticounterfeiting . These methods present a satisfactory anticounterfeiting effect without limitation of the sample size, and the hidden information is usually identified by shifting the perspective.…”

Section: Resultsmentioning

confidence: 99%

Optical Steganography Strategy Benefiting from Structural Color Cycling Based on Anodic Aluminum Oxide Membranes

Huang,

Wu,

Wang

et al. 2023

ACS Appl. Opt. Mater.

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Optical steganography, as an important technology in information security, can be used in the field of image encryption. However, its cumbersome fabrication with high cost and an indistinguishable decryption effect severely hinder the scope of applications. In this study, structural color security engineering is proposed by employing multilayer stacks based on thin-film interference, which consist of an anodic aluminum oxide (AAO) membrane sandwiched between an ultrathin Ag layer and an Al substrate. Two hue cycles are defined by the gradient color rendering of samples. The multilayer stacks with various thicknesses of AAO membranes present visually equivalent colors from different hue cycles, which realize the ciphertext of "HEU" with a chromatic difference (ΔE) of 3.25. It can be decrypted by the perturbation that is derived from the variation of the refractive index (RI) of such multilayer stacks and results in a maximum ΔE of 32.70 between the plaintext and the background. This convenient steganography technology based on the cyclical color rendering of high-purity colors realizes plaintext encryption and decryption effectively and benefits the clear identification of the information. This work paves the path to explore information security-related applications by structural color engineering.

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Section: Resultsmentioning

confidence: 99%

Optical Steganography Strategy Benefiting from Structural Color Cycling Based on Anodic Aluminum Oxide Membranes

Huang,

Wu,

Wang

et al. 2023

ACS Appl. Opt. Mater.

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“…Possible research developments are the application of AI in the detection of biological conditions for risk detection, finding possible nano-additives ensuring food security, and designing flexible electronic components. The research in alarm and security systems includes different topics such as the integration of nanomaterials with semi-conductor technology in alarm systems [251], image surveillance by means of miniaturized image vision devices [252][253][254][255], metasurfaces controlling information [256,257], shape memory alloys (SMA) improving impact damage tolerance in civil and military applications [258], and nanotechnology for anti-counterfeiting [259][260][261][262][263][264][265][266][267][268]. Embedded systems are constituted by all the elements detecting the alarm condition, including the materials, circuits, AI control, and alerting/risk processes to be executed.…”

Section: (Ket Vi) Security and Connectivitymentioning

confidence: 99%

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Massaro

2023

Electronics

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The review highlights possible research topics matching the experimental physics of matter with advances in electronics to improve the intelligent design and control of innovative smart materials. Specifically, following the European research guidelines of Key Enabling Technologies (KETs), I propose different topics suitable for project proposals and research, including advances in nanomaterials, nanocomposite materials, nanotechnology, and artificial intelligence (AI), with a focus on electronics implementation. The paper provides a new research framework addressing the study of AI driving electronic systems and design procedures to determine the physical properties of versatile materials and to control dynamically the material’s “self-reaction” when applying external stimuli. The proposed research framework allows one to ideate new circuital solutions to be integrated in intelligent embedded systems formed of materials, algorithms and circuits. The challenge of the review is to bring together different research concepts and topics regarding innovative materials to provide a research direction for possible AI applications. The discussed research topics are classified as Technology Readiness Levels (TRL) 1 and 2.

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“…can be applied in photoluminescence, photocatalysis, optoelectronics, gas sensors, supercapacitors, electrocatalysts for water splitting, oxidation catalysis, and ion batteries [1]. Rare-earth hydroxyfluorides are promising for the preparation of luminescent materials with high refractive index and low phonon energy [2][3][4]. The structure of metal hydroxyfluorides can be regarded as the structure of fluorine-substituted hydroxides or hydroxyl-substituted metal fluorides.…”

Section: Introductionmentioning

confidence: 99%

Fluorination of Eu-doped layered yttrium hydroxides: the role of anionic composition

Liu,

Golodukhina,

Kameneva

et al. 2024

Nanosystems: Phys. Chem. Math.

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The fluorination processes of layered rare-earth hydroxides (LRHs) intercalated with various anions, including organic ones, have been compared for the first time. The fluorination process was investigated for chloride-, nitrate-and 4-sulfobenzoate-intercalated Eu-doped layered yttrium hydroxides by interaction with aqueous solutions of sodium fluoride at 100-150 • C for 2-48 hours. The final product of fluorination in all cases is the hexagonal yttrium hydroxide fluoride (YHF) phase of Na y Y 0.95 Eu 0.05 (OH) 3+y−x F x • mH 2 O (x ∼ 3, y ∼ 0.2) composition. The formation rate of the YHF increases with the interlayer spacing of the Eu-doped layered yttrium hydroxide. KEYWORDS layered rare-earth hydroxides (LRHs), fluorination, luminescence, ion exchange, topotactic reactions, metal hydroxyfluorides.

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Tri-channel tubular lanthanide nanocomposites for multimodal anti-counterfeiting

Cited by 8 publications

References 44 publications

Optical Steganography Strategy Benefiting from Structural Color Cycling Based on Anodic Aluminum Oxide Membranes

Optical Steganography Strategy Benefiting from Structural Color Cycling Based on Anodic Aluminum Oxide Membranes

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Fluorination of Eu-doped layered yttrium hydroxides: the role of anionic composition

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