Laser & Photonics Reviews
·
2024
·Vol. 18
·期 12
·2400812
·
IF 9.8
Guangyin Qu,Xiaojuan Zhang,Siqi Li,Yan Kuai,Feng Xu,Liang Lu,Yu Liu,Zhigang Cao,Benli Yu,Anderson S. L. Gomes,Zhijia Hu
In contrast to conventional anti-counterfeiting technologies, which are susceptible to decryption and exhibit limited effectiveness, the utilization of light to dynamically configure soft materials in a fully reversible and programmable manner not only enhances data security but also improves anti-counterfeiting performance. However, achieving precise control over reflection structural colors and laser wavelengths within a broad dynamic range remains a challenge. In this study, a UV-responsive soft helical superstructure is established by combining a photochromic compound with chiral liquid crystals (LCs). By manipulating the Bragg reflection angle, structural reflection colors ranging from red to cyan are successfully achieved. The introduction of an anti-counterfeiting technique that embeds diverse micro-structures provides features such as color adjustability, erasability, and angle-dependent stability. Using the unique properties of this soft helical superstructure, the implementation of a wavelength-tunable LC bandgap laser through optically reconfigurable Förster resonance energy transfer processes is showcased. Furthermore, a straightforward prototype information encoder is developed to mimic the processes of information encoding and decoding, bypassing the need for complex algorithm design. This research underscores the practicality of LC helical soft systems, emphasizing their distinctive responsiveness to light and their applicability in optical programming photonics.
研究领域:
光学材料
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软物质物理
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光子学
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信息安全
·
功能材料
·
分子光化学
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DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 10
·期 3
·2101843
·
IF 9.926
Ziyu Chen,Jiaxin Yang,Rui Xu,Zejia Zhao,Xu Sang,Lisa Liu,Ming Feng,Feng Song,Yonghong He,Wei Huang
Optical encryption provides a significant implementation strategy for information security, which can be ascribed to multichannel, simple operation, and high security. Multiple responsive luminescent material has emerged as an ideal candidate for optical encryption, owing to intelligent responsive ability and unclonable security. Herein, a structural doping strategy is developed in the layer-by-layer self-assembly process to elevate the maneuverability of light-emitting color and mode. By encapsulating lanthanide doped inorganic matrix and layered hydroxide with PMA, the recognizable red-orange fluorescence can be produced in the invisible region, and realizes the conversion of yellow and green fluorescence in visible region. Meanwhile, both excitation source and emission color can be used as distinguishable encryption means, which enables structural doping complex to be multiplexed and encoded with high capacity and complexity. Furthermore, asymmetrically and symmetrically coded flexible labels with specific color sequence are prepared by brushing process, and specific encryption key are set to ensure the nonlinearity of cryptosystem. Through the integration of dual-mode and adjustable light response codes constructed by structural doping strategy, multidimensional high-level information encryption can be realized, which opens up a deep exploration in the field of information security for the application of multifunctional optical properties of light response materials.
研究领域:
材料科学
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纳米科技
·
光学工程
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信息安全
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功能材料
·
光子学
·
智能材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 13
·8145-8153
·
IF 4.036
Yulei Gao,Xiang Di,Fenfen Wang,Pingchuan Sun
Amorphous polymer-based room temperature phosphorescence (RTP) materials exhibiting tunable emission colors have received tremendous attention and are extremely challenging to prepare. Herein, polyacrylamide-based RTP materials with tunable multicolor emission were prepared via copolymerizing phosphor with concentration dependent luminescence colors and acrylamide with different molar ratios. The hydrogen bonding interactions and chemically crosslinked structures in these polymers effectively restrict the mobility of phosphors and activate efficient RTP emission. The molar ratio of phosphor and acrylamide has a significant influence on the photophysical properties of these polymers, which can be used to fabricate multicolor materials. In addition, the RTP intensity decreases with increasing humidity due to the disassociation of hydrogen bonding by adsorption of water, manifesting as a humidity sensor. Benefiting from the distinguishable RTP lifetimes and the responsiveness to humidity, triple encoding for information encryption is successfully realized.
研究领域:
高分子化学
·
分析化学
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材料科学
·
传感器技术
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信息安全
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Jiaren Du,Panqin Wang,Yukun Li,Hengwei Lin,Dirk Poelman
Multimodal luminescence involves color-tunable and wavelength manageable photon emissions upon variable luminescence pathways in response to different external stimuli, which provides clear visualization and high-level confidentiality for information encryption technologies. Integrating multimodal luminescence into a single matrix is regarded as a feasible strategy but remains a big challenge. In this work, multimodal (photoluminescence, persistent luminescence, upconversion luminescence, and thermally stimulated luminescence) and multicolor luminescence (green, yellow, orange, pink to red) is achieved in CaWO4:Yb3+,Er3+,Eu3+ phosphor by employing an interplay of traps and rare earth emission centers. Bright emission in a wide color gamut is achieved dynamically in response to thermal disturbance and light illumination, which further allows for on-demand emission manipulation in space and time dimensions. The compatible coexistence of multiple rare earth emissive centers together with abundant photoactive traps contributes to the excellent integration of multimodal photon emissions in calcium tungstate. This work provides a good example of integrating multimodal luminescence into one single matrix and indicates potential in advanced high-level information encryption applications.
研究领域:
材料科学
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光学材料
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发光与光子学
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信息安全
·
稀土化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Xiaofan Ge,Zuoling Fu
The rational exploration of lanthanide-doped phosphors is of great significance for realizing precise optical temperature sensing and information security applications. Here, triple-wavelength responsive Ba2Ga2GeO7:Er3+ phosphors were synthesized by a solid-state method, and the samples gave highly pure green emissions under 808 and 382 nm excitations. Within the temperature range from 313 to 573 K, the corresponding temperature sensing performance based on the fluorescence intensity ratio was estimated, and the maximum relative sensing sensitivities were determined to be 0.97%, 1.20%, and 1.19% K–1 for the 980, 808, and 382 nm excitations, respectively, indicating the title materials are promising for use in temperature sensors. Furthermore, the introduction of Tb3+ enables the materials to realize down conversion luminescence and long persistent luminescence, which greatly enrich the luminescence phenomena of the samples. Based on the abundant emission modes, novel information encryption strategies of digital displays and binary digital-ASCII multiplex codes are proposed, which provide reliable guidance on advanced visualized information encryption.
研究领域:
材料科学
·
光学传感
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发光材料
·
信息安全
·
光子学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 29
·7167-7173
·
IF 5.256
Kai-Kai Liu,Chong-Xin Shan,Gao-Hang He,Ruo-Qiu Wang,Zhi-Peng Sun,Quan Liu,Lin Dong,De-Zhen Shen
Encryption is of vital importance in both military and civil fields. Although there have been a few attempts to encrypt information and produce anti-counterfeiting techniques employing functional materials, it is still urgently needed to develop advanced encryption routes that cannot be cracked easily. This paper presents a simple strategy for advanced encryption based on the fluorescence quenching of ZnO nanoparticles (NPs) by acid and copper ions. In this strategy, certain patterns are printed onto a ZnO NP pre-coated paper using a CuCl2 aqueous solution as an ink to produce an invisible latent image, which is only visible under ultraviolet (UV) irradiation. For encryption, the patterns can be perfectly concealed by exposure to vinegar vapour, due to the dissolution of the ZnO NPs in acidic conditions, and decryption can be performed via neutralization in an ambient soda vapour environment and subsequent uniform re-coating with ZnO NPs. An additional matrix of pixels with encoded grey levels acquired by tuning the dose of CuCl2 is demonstrated to further enhance the anti-counterfeiting capability. A 4 × 4 micron matrix with a total combination of 1.67 × 108 codes has been enciphered in the latent patterns for demonstration, and this is a huge barrier for counterfeiting. The results reported in this paper provide a simple strategy for advanced encryption, and may inspire versatile applications in the fields of information security and anti-counterfeiting.
研究领域:
信息安全
·
纳米材料
·
光学加密
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防伪技术
·
荧光材料
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 38
·13200-13208
·
IF 7.393
Yongbiao Wan,Pidong Wang,Feng Huang,Jun Yuan,Dong Li,Kun Chen,Jianbin Kang,Qian Li,Taiping Zhang,Song Sun,Zhiguang Qiu,Yao Yao
Information security is of great importance for modern society with all things connected. Physical unclonable function (PUF) as a promising hardware primitive has been intensively studied for information security. However, the widely investigated silicon PUF with low entropy is vulnerable to various attacks. Herein, we introduce a concept of bionic optical PUFs inspired by unique biological architectures and fabricate four types of bionic PUF by molding the surface micro–nano structures of natural plant tissues with a simple, low-cost, green and environmentally friendly manufacturing process. The laser speckle responses of all bionic PUFs are statistically demonstrated to be random, unique, unpredictable and robust enough for cryptographic applications, indicating the broad applicability of bionic PUFs. Based on this, the feasibility of implementing bionic PUFs as cryptographic primitives in entity authentication and encrypted communication is experimentally validated, showing its potential in future information security applications.
研究领域:
信息安全
·
光学
·
密码学
·
仿生学
·
硬件安全
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 45
·15945-15951
·
IF 6.4
Hong Wang,Jia Tang,Haitao Deng,Yong Tian,Zhong Lin,Jiaxi Cui,Jian Chen
Supramolecular photoswitchable polymers are widely considered for potential applications in the development of anti-counterfeiting labels and information encryption owing to their advantages of easy functionalization, simple preparation, high brightness, and excellent photoswitchable characteristics. In this study, we describe photoswitchable fluorescent supramolecular polymers (PFSPs) prepared through two independent host–guest interactions (adamantane and β-cyclodextrin, cyanogroup and pillar[5]arene). Based on the fluorescence resonance energy transfer (FRET) principle, AIE-based dyes (NC-DSA-CN) with green fluorescence emission and spiropyran-linked β-cyclodextrin (CDSP) were utilized to create light-induced FRET systems. NC-DSA-CN was fixed through supramolecular interaction to prevent intramolecular rotation, resulting in excellent fluorescence properties in both the solution and the solid state. In this system, when the donor/acceptor ratio was up to 150 : 1, the FRET efficiency was 89.2%, and PFSPs showed superior photoswitchable performance, including fast photo-responsibility and prominent photo-reversibility. Thanks to their AIE and photoswitchable properties, PFSPs were successfully applied in the construction of information encryption and anti-counterfeiting systems.
研究领域:
材料科学
·
超分子化学
·
光学材料
·
信息安全
·
聚合物化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xinlian Chen,Kaiyang Wang,Bori Shi,Tanghao Liu,Riming Chen,Mengying Zhang,Weijia Wen,Guichuan Xing,Jinbo Wu
The level of hardware or information security can be increased by applying physical unclonable functions (PUFs), which have a high complexity and unique nonreplicability and are based on random physical patterns generated by nature, to anticounterfeiting and encryption technologies. The preparation of PUFs should be as simple and convenient as possible, while maintaining the high complexity and stability of PUFs to ensure high reliability in use. In this study, an all-inorganic perovskite single-crystal array with a controllable morphology and a random size was prepared by a one-step recrystallization method in a solvent atmosphere to generate all-photonic cryptographic primitives. The nondeterministic size of the perovskite nanorods mainly arises from crystal growth in an indeterminate direction, producing a high entropy for the system. The cavity-size-dependent lasing emission behavior of perovskite single crystals was investigated as a preliminary exploration of the generation of all-photonic cryptographic primitives. The lasing-mode number was positively correlated with the length of the perovskite nanorods. Therefore, the prepared perovskite nanorod array with random sizes can be transformed into a quaternary cryptographic key array following encoding rules based on the lasing-mode number. Superior lasing stability was observed for the all-inorganic perovskite under continuous excitation, demonstrating the high reliability of this system.
研究领域:
光子学
·
材料科学
·
光电子学
·
信息安全
·
纳米技术
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 16
·2102562
·
IF 10.05
Ping Chen,Dongyan Li,Zexin Li,Lejing Pi,Xiang Xu,Haoyun Wang,Xing Zhou,Tianyou Zhai
High-security encryption has always been important in economic and military fields as well as in daily life. 2D van der Waals (vdW) rare-earth (RE) materials have advantages in photoluminescence (PL) modulation to achieve high-security encryption because of their multiple sharp emission peaks, which will facilitate the multimode regulation for high-security encryption of programmable information. Here, programmable information encryption has been achieved by applying 2D vdW ErOCl via the editable electric-tunable PL. The correct information encoded in PL outputs can be tactfully decrypted from the PL intensity ratio of 2 H 11/2 – 4 I 15/2 and 4 S 3/2 – 4 I 15/2 transitions. This strategy for ASCII codes and images encryption with high-security is demonstrated. This novel approach, PL modulation of 2D vdW RE material based on programmable electric inputs, will mark a new path to achieve high-security encryption.
研究领域:
材料科学
·
光电子学
·
信息安全
·
纳米技术
·
光子学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhiwen Shu,Fuhua Ye,Peng Liu,Pei Zeng,Huikang Liang,Lei Chen,Xiaoqing Zhang,Yiqin Chen,Zhichao Fan,Jianwu Yu,Huigao Duan
Crack lithography is important for preparing microstructured materials. This strategic use of cracking breaks with the traditional idea that cracks are unwanted and has great potential for high-resolution and high-throughput production. However, the ability to control nanoscale crack patterning is still insufficient. Here, we present a nanoscale, programmable angle-dependent technique to control crack generation that relies on standard electron-beam lithography. Multiscale patterns of poly(methyl methacrylate) of arbitrary shape, geometric size, and large area were obtained, greatly expanding the processing capacity of electron-beam lithography. In addition, we observed the interaction between adjacent structures and cracks, which resulted in crack suppression or second-order cracks. We also demonstrated that angle-dependent nanoscale cracks can be used in physical unclonable functions and have great application prospects in the field of information security. We believe that our strategy for programmable nanoscale crack patterning provides new opportunities and perspectives for nanofabrication.
研究领域:
纳米技术
·
材料科学
·
微加工
·
信息安全
·
高分子工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）