Multigenerational Crumpling of 2D Materials for Anticounterfeiting Patterns with Deep Learning Authentication

Jing, Lin; Xie, Qian; Li, Hongling; Li, Kerui; Yang, Haitao; Ng, Patricia Li Ping; Li, Shuo; Li, Yang; Teo, Edwin Hang Tong; Wang, Xiaonan; Chen, Po‐Yen

doi:10.1016/j.matt.2020.10.005

Cited by 31 publications

(39 citation statements)

References 53 publications

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“…The image was converted to a size of 960 × 960 during normalization, so there were 256 960 × 960 permutations and combinations for an anti‐counterfeiting pattern, and the theoretical encoding capacity reached 1 × 10 2 219 212 (we referred to the calculation proposed by Jing et al. [ 16 ] ). According to Carro‐Temboury et al., [ 58 ] the effective encoding capacity of film pattern can reach 2.1 × 10 623 (These calculations are detailed in Note S3, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

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Unclonable Micro‐Texture with Clonable Micro‐Shape towards Rapid, Convenient, and Low‐Cost Fluorescent Anti‐Counterfeiting Labels

Lin

Zhang

Feng

et al. 2021

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methods rely on clonable labels produced by a deterministic process. These labels are low-cost but their simple and repeatable preparation processes and regular decoding mechanisms are exploitable by counterfeiters. [4,5] Many of the more complex and safer anti-counterfeiting labels (such as high-end RFID labels with large number of logic gates) cannot become standard on some commonly used products due to their high cost. [5,6] Anti-counterfeiting labels with physical unclonable functions (PUF) are a feasible solution to the above shortcomings. Since the introduction of the PUF in 2002, [7] many anticounterfeiting labels with different PUF characteristics have been developed, such as unique bionic fingerprint pattern with random surface topography; [8][9][10] randomly distributed nanoparticle pattern, including flower-like patterns with random pinning points, [11] nanowires coated with fluorescent dyes in random positions, [12] etc. In addition, researchers have prepared many types of PUF anticounterfeiting labels with optical response. For example, Cheng et al. [13] reported a multicolor plasma nanopaper with random Raman intensity distribution, He et al. [14] designed multi-mode structural-color anti-counterfeiting labels composed of randomly arranged nanospheres, and Leem et al. [15] developed edible silk film labels with random light response. To improve the capabilities and speed of unclonable-pattern recognition,

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Section: Resultsmentioning

confidence: 99%

“…Jing et al. [ 16 ] developed a DL‐facilitated software to pre‐categorize the hierarchical topographies with classifiable features, which can shorten the overall authentication time.…”

Section: Introductionmentioning

confidence: 99%

Unclonable Micro‐Texture with Clonable Micro‐Shape towards Rapid, Convenient, and Low‐Cost Fluorescent Anti‐Counterfeiting Labels

Lin

Zhang

Feng

et al. 2021

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“…Moreover, the encoding capability of our LOP-PUF is estimated theoretically and practically. The conventional PUF systems can have an encoding capacity of c s , where c is bit states and s is the size of bit sequence 36 , 37 . Our LOP-PUF has a c value of 2 and an s value of 768; hence, the theoretical encoding capacity is 2 768 .…”

Section: Resultsmentioning

confidence: 99%

Revisiting silk: a lens-free optical physical unclonable function

et al. 2022

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For modern security, devices, individuals, and communications require unprecedentedly unique identifiers and cryptographic keys. One emerging method for guaranteeing digital security is to take advantage of a physical unclonable function. Surprisingly, native silk, which has been commonly utilized in everyday life as textiles, can be applied as a unique tag material, thereby removing the necessary apparatus for optical physical unclonable functions, such as an objective lens or a coherent light source. Randomly distributed fibers in silk generate spatially chaotic diffractions, forming self-focused spots on the millimeter scale. The silk-based physical unclonable function has a self-focusing, low-cost, and eco-friendly feature without relying on pre-/post-process for security tag creation. Using these properties, we implement a lens-free, optical, and portable physical unclonable function with silk identification cards and study its characteristics and reliability in a systemic manner. We further demonstrate the feasibility of the physical unclonable functions in two modes: authentication and data encryption.

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“…Hong et al 25 demonstrated a highly stretchable and transparent electric heater by constructing a partially embedded silver nanowire penetration network on an elastic substrate. Another effective method is to prepare composite materials with conductive fillers using elastic substrates 26 to form wrinkled 27,28 and crumpled 29,30 structures by prestretching, thermal contraction, and solvent inducement. Among these methods, the formation of a wrinkled structure by a mechanical prestretch-and-release process is a widely used strategy to improve the stretchability of materials owing to its simplicity and high controllability.…”

Section: Introductionmentioning

confidence: 99%

MXene-Coated Wrinkled Fabrics for Stretchable and Multifunctional Electromagnetic Interference Shielding and Electro/Photo-Thermal Conversion Applications

Dong

Luo

Ning

et al. 2021

ACS Appl. Mater. Interfaces

111

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Stretchability and multifunctional heating abilities are highly desired for wearable electromagnetic interference (EMI) shielding fabrics to tackle the growing electromagnetic pollution for special crowd, such as pregnant women. Herein, we fabricated stretchable MXene-coated thermoplastic polyurethane (TPU) fabrics by simple uniaxial prestretching and spraying methods. The obtained unique wrinkled structure endowed the film with effective strain-invariant electrical conductivity and EMI shielding properties. Specifically, the prepared stretchable film with an extremely low MXene loading (0.417 mg cm–2) exhibited a stable EMI shielding effectiveness of approximately 30 dB under 50% tensile strain and durability during stretching and bending cycles. More importantly, owing to the high electrical conductivity and localized surface plasmon resonance (LSPR) effect of the MXene layer, the stretchable fabrics exhibited excellent Joule heating (up to 104 °C at a voltage of 5 V) and superior photothermal conversion abilities. Moreover, the unique wrinkled MXene-coating layer not only endows the fabrics with stretchable heat abilities but also enhances the photothermal conversion performance by increasing the light absorption area and travel path. We believe that this study offers a novel strategy for the versatile design of stretchable and multifunctional wearable shielding fabrics.

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Multigenerational Crumpling of 2D Materials for Anticounterfeiting Patterns with Deep Learning Authentication

Cited by 31 publications

References 53 publications

Unclonable Micro‐Texture with Clonable Micro‐Shape towards Rapid, Convenient, and Low‐Cost Fluorescent Anti‐Counterfeiting Labels

Unclonable Micro‐Texture with Clonable Micro‐Shape towards Rapid, Convenient, and Low‐Cost Fluorescent Anti‐Counterfeiting Labels

Revisiting silk: a lens-free optical physical unclonable function

MXene-Coated Wrinkled Fabrics for Stretchable and Multifunctional Electromagnetic Interference Shielding and Electro/Photo-Thermal Conversion Applications

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