Nature Communications
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2020
·Vol. 11
·期 1
·1-13
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IF 12.121
Gu Yuqing,He Chang,Zhang Yuqing,Lin Li,Thackray Benjamin David,Ye Jian
Anticounterfeiting labels based on physical unclonable functions (PUFs), as one of the powerful tools against counterfeiting, are easy to generate but difficult to duplicate due to inherent randomness. Gap-enhanced Raman tags (GERTs) with embedded Raman reporters show strong intensity enhancement and ultra-high photostability suitable for fast and repeated readout of PUF labels. Herein, we demonstrate a PUF label fabricated by drop-casting aqueous GERTs, high-speed read using a confocal Raman system, digitized through coarse-grained coding methods, and authenticated via pixel-by-pixel comparison. A three-dimensional encoding capacity of over 3 × 10 15051 can be achieved for the labels composed of ten types of GERTs with a mapping resolution of 2500 pixels and quaternary encoding of Raman intensity levels at each pixel. Authentication experiments have ensured the robustness and security of the PUF system, and the practical viability is demonstrated. Such PUF labels could provide a potential platform to realize unbreakable anticounterfeiting.
研究领域:
材料科学
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光学
·
安全技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2025
·
IF 4.2
Donglin Yuan,Xianrui Meng,Ying Liu,Manman Zhang,Chiyu Wang,Ke Yuan,Shunfei Qiang,Wenkai Zhang,Dun Liu
Physical unclonable functions (PUFs) have gained widespread adoption for secure authentication, yet existing systems often face challenges related to cost, complexity, and scalability. This study introduces a novel holographic physical unclonable function (HPUF) based on electrospun nanofiber membranes (ESNFs), which integrates plasmonic gratings with the inherent randomness and robustness of ESNFs. Efficient conformal printing of gratings onto ESNF membranes was achieved by combining the rapid self-assembly of silver nanocubes with microstructured transfer printing. The HPUF system demonstrated high diffraction efficiency (up to 37 %) and exceptional key space security, with a key size of approximately 2 384 . The generated HPUF patterns passed 13 NIST randomness tests without post-processing, confirming their suitability for cryptographic applications. Furthermore, the HPUF exhibited excellent stability, with high reproducibility across 40 challenge-response cycles. This work presents a high-efficiency, scalable, and visually distinctive solution for secure anti-counterfeiting and cryptographic applications, with potential for integration into various materials.
研究领域:
材料科学
·
光学
·
安全技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Zimeng Zeng,Mengnan Hu,Jiayao Liu,Zhaona Wang
Photonic barcodes with random fingerprints possess significant potential applications in anti-counterfeiting and security protection due to their unclonable characteristics. Here, a scalable coding strategy is proposed to realize the physical unclonable function (PUF) codes based on a random-distributed biconcave-cavity random laser (BCRL) array in microchannel . Its unique configuration exhibits scalable randomness induced by microcavities and the scatterers , demonstrating a PUF characteristics in lasing intensity variations with pump positions. The random intensity information is firstly used as 1st-order coding to generate the PUF codes. The CIE tristimulus values of the tricolor lasing is then established as 2nd-order coding. The obtained codes strongly rely on the relative position of the arrays, indicating excellent unclonability and high generation efficiency. This work supplies a low-cost way to generate PUF codes for security system, promoting random lasing applications in security protection.
研究领域:
光子学
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生物医学工程
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微流控技术
·
信息安全
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激光技术
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防伪技术
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Yuanze Sun,Xinfei Li,Na Cao,Chongxue Duan,Changfeng Ding,Yi Huang,Jie Wang
Biodegradable plastics have emerged as an ecological alternative to conventional petroleum-based plastics. Despite the recent advances in the effects of conventional microplastic on soil ecosystems, the ecological impact of biodegradable microplastics in soil environments remains poorly understood. Here, we performed soil microcosms with conventional (polyethylene and polystyrene) and biodegradable (polybutylene succinate and polylactic acid) microplastics to estimate their effects on the success patterns, co-occurrence networks, and the assembly mechanisms of soil bacterial communities . Biodegradable microplastics significantly altered the soil bacterial community composition with steeper temporal turnovers (rate: 0.317 – 0.514) compared to the conventional microplastic treatments (rate: 0.211 – 0.220). Network under biodegradable microplastics showed greater network complexity, including network size, connectivity, average clustering coefficient, and the number of keystone species , as compared with the conventional microplastic treatments. Additionally, the biodegradable microplastic network had higher robustness, which may be potentially due to the enhanced dissolved organic carbon contents in the soil treated with biodegradable microplastics. The bacterial community assembly was initially governed by deterministic homogeneous selection (93 – 100 %) under the stress of microplastics, but was progressively structured by increasing stochastic homogeneous dispersal (17.8 – 73.3 %) over time. The normalized stochasticity ratio also revealed that the application of microplastics increased the importance of stochastic processes following incubation. These findings greatly enhanced our understanding of the ecological mechanisms and interactions of soil bacterial communities in response to microplastic stress.
研究领域:
环境科学
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微生物学
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土壤生态学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）