NEW JOURNAL OF CHEMISTRY
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2021
·Vol. 45
·期 18
·8203-8209
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IF 3.591
Chen Yang,Ru Li,Jun Zhang,Zhi-Kai Cao,Chun-Li Liu,Meng Zhang,Wen-Peng Han,Seeram Ramakrishna,Yun-Ze Long
Conventional encryptions including single and multiple encryptions still have disadvantages, such as low security, complicated operation process and time consuming. Herein, a dual information encryption mechanism based on the exclusivity of the decryption process is proposed, which uses carbon dots (CDs) as fluorescent inks with two rounds of encryption and decryption to perform dual information encryption. The encryption process is easy to operate, and the decryption process can be completed in a short time (<8 s) with the correct decryption method. Importantly, this dual information encryption brings higher security, because the encrypted information cracked by an incorrect decryption method will obtain readable information. This readable information seems to be correct information, but in fact it is deluded information, which can prevent further decoding attempts. Using this dual information encryption mechanism, we designed three distinct applications including deluded information, high-density storage, and recoverable functions after being intercepted. The proposed information encryption idea may provide a new way for information encryption with more security.
研究领域:
材料科学
·
信息安全
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DOI
高影响因子
Advanced Optical Materials
·
2021
·Vol. 10
·期 2
·2101268
·
IF 9.926
Mengyao Pan,Chengyu Wang,Yuefan Hu,Xin Wang,Lei Pan,Yipeng Lin,Lei Shang,Hongbo Xu,Jiupeng Zhao,Yao Li
Invisible photonic patterns based on responsive photonic crystals show great potential in structural-color encryption. However, single inherent information (structural color) encryption/decryption means and the incomplete invisibility in normal conditions greatly limit further development in high-precision encryption. Here, a novel invisible photonic pattern encrypted/decrypted by dual optical information (structural color and brightness) is reported. It is prepared by engineering an extremely large wettability difference into the patterned and unpatterned regions of a vapor-responsive inverse opal film. The same optical properties and the distinct wettability difference between the two regions not only ensure that the pattern encrypted by structural color and brightness in the normal state can be entirely hidden under the microscope, but also ensure that it can be decoded by large color contrast (Δλ = 26–32 nm) and brightness contrast (Δ B = 48–57.6) under flowing water vapor state. The unique invisible photonic pattern, reported for the first time, can inject new life into structural color-based encryption.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Rui Zhou,Huasheng Tian,Hongyang Zhao,Li Ke,Haoyu Wu,Yaqing Liu,Jingcheng Hao
The increasing significance of data security promotes the development of multilevel information encryption and decryption techniques. However, the realization of logical outputs modulated by multiple stimuli is challenging in the design of advanced functional materials. Herein, a multilevel information decryption system with a combination of visual and digital outputs that responds to dual-optical inputs is developed based on a hydrogel-based synaptic device. ammonium molybdate nanoparticles and calcium alginate supramolecular networks is incorporated into a polyacrylamide hydrogel to enable optically regulated color change and ionic conductivity. Under UV irradiation, the reduction of the nanoparticles allows the hydrogel to change color as visual outputs. Meanwhile, the ionic conductivity of the hydrogel can be modulated by near-infrared (NIR) optical pulses to emulate the synaptic plasticity of biological synapses, producing NIR-mediated digital outputs. As a demonstration, a multilevel decryption strategy is provided using a hydrogel array that combines digital information decoding with visual information camouflage. Moreover, the short-term plasticity of the hydrogel synapse endows the system with time-dependent decryption, which improves information security and reduces the risk of data leakage. This study contributes to advancing multilevel decryption systems by providing an effective technique for integrating digital and visual decryption in hydrogel materials.
研究领域:
材料科学
·
神经科学
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信息安全
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Kun Qian,Yan Shao,Zairan Yang,Shimei Jiang
Photoresponsive polymer materials, in particular, light-driven liquid crystal polymer networks (LCNs) have attracted much attention due to their rapid and significant capacity for photodeformation. However, a single shape change could not meet the growing needs of the information encryption field. Therefore, we aimed to find a photoluminescent and photochromic LCN to enrich the application of photodeformable materials. Here, a light-driven LCN consisting of two distinct kinds of photosensitive moieties, cyanostilbene (CS) and spiropyran (SP), named CS∙SP∙LCN, has been designed and synthesized. The resultant LCN film displayed multiple photo/thermal responsive properties. On the one hand, the trans – cis photoisomerization of CS gave the film capacity for photodeformation. On the other hand, the reversible conversion between ring-closed SP and ring-opened merocyanine (MC) under alternating stimulation of UV irradiation and heating gave the film capacity for tunable photoluminescence and photochromism. The CS∙SP∙LCN film can bend and change color/luminescence under UV irradiation, leading to multi-element writing simultaneously. Then, the written information could be hidden by heating and stretching. Notably, the film resumed bending after the second heating due to the good stability of the cis isomer of CS, realizing the first decryption. Finally, the color/luminescence of the film resumed after the second UV irradiation, completing the second decryption of the information. The CS∙SP∙LCN films synthesized in this study could realize multi-element encryption and step-by-step decryption through the cooperation of CS and SP, achieving more advanced information storage and encryption possibilities.
研究领域:
材料科学
·
光学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jian-Qiang Zhao,Hua-Sen Shi,Le-Ran Zeng,Hui Ge,Yu-Han Hou,Xiao-Min Wu,Cheng-Yang Yue,Xiao-Wu Lei
Storage and protection of confidential information is an increasing challenge for global digital economy, which stimulates the never-ending pursuit of high-security technology to prevent information forgery and leakage. Herein, we develop a novel approach to realize controllable information encryption-decryption based on reversible photoluminescence (PL) on/off switch in 0D hybrid antimony halide. A new 0D [DPA] 3 SbCl 6 (DPA = dipropylamine) was designed as broadband green light emitter with near-unity photoluminescence quantum yield. Benefiting from invisible and non-luminescent superiorities of SbCl 3 , information encrypted by SbCl 3 pattern can′t be directly decoded upon common light excitations. Under the trigger of [DPA]Cl salt, superfast transition from SbCl 3 to [DPA] 3 SbCl 6 gives rise to highly efficient emission and thus effective information decoding. Subsequently, through methanol impregnation and desolvation strategy, luminescence of [DPA] 3 SbCl 6 can be easily quenched and recovered resulting in reversible PL on/off switching. The multiple and controllable PL emission conversion provides a dual-mode confidential information encryption-decryption technology.
研究领域:
材料科学
·
光学
·
信息安全
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaoyong Zhang,Meiyue Jin,Liping Ding,Jinmei He,Yongping Bai,Lidong Zhang
Inspired by nature, hydrogel actuators are important for designing soft robots and become one of the most essential components of intelligent research. However, classical actuation method, such as Near-Infrared (NIR) light stimulates the actuator to complete the motions then it automatically recovers original state when the light is off, cannot provide continuous in situ dynamic motion stay and recovery under one NIR light. In this study, a novel network-polycaprolactone (Net-PCL)-poly N -isopropylacrylamide (PNIPAM) hydrogel actuator (Net-PCL-Gel) is proposed through a layer-by-layer stacking technology, leading to the co-existence of Net-PCL with photoinduced shape memory capability and PNIPAM hydrogel segments showing de-swelling/swelling phase transition. Owing to the shape memory property of Net-PCL, the Net-PCL-Gel exhibits in situ dynamic bending and recovering stay behavior in response to NIR irradiation with the active force of PNIPAM. Different from the conventional hydrogel system, the Net-PCL-Gel also displayed remarkable decryption performance in information reading and hiding, while retaining excellent accuracy and stability. Due to its simplicity, this strategy shows great potential for the biomimetic operation of soft grippers and multifunctional actuators.
研究领域:
智能材料
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软体机器人
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生物仿生学
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产品关联
DOI
高影响因子
Small
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2024
·
IF 13
Tong Hu,Shufen Zhang,Yong Qi
The ability to reversibly exhibit structural color patterns has positioned photonic crystals (PCs) at the forefront of anti-counterfeiting. However, the security offered by the mere reversible display is susceptible to illicit alteration and disclosure. Herein, inspired by the electronic message captcha, bilayer photonic crystal (BPC) systems with integrated decryption and verification modules, are realized by combining inverse opal (IO) and double inverse opal (DIO) with polyacrylate polymers. When the informationized BPC is immersed in ethanol or water, the DIO layer displayed encrypted information due to the solvent-induced ordered rearrangement of polystyrene (PS) microspheres. The verification step is established based on the different structural colors of the IO layer pattern, which result from the deformation or recovery of the macroporous skeleton induced by solvent evaporation. Moreover, through the evaporation-induced random self-assembly of PS@SiO 2 and SiO 2 microspheres, unclonable structurally colored identifying codes are created in the IO layer, ensuring the uniqueness upon the verification. The decrypted code in the DIO layer is valid only when the IO layer displays the pattern with the predetermined structural color; otherwise, it is a pseudo-code. This structural color-based “decryption-verification” approach offers innovative anti-counterfeiting applications in nanophotonics.
研究领域:
纳米光子学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Yanan Bu,Ting Wu,Jiji Fan,Xiuqiong Chen,Siyuan Zhao,Zhenrong Yu,Huiqiong Yan,Qiang Lin
It is a great challenge to develop information processing materials with powerful encryption/decryption functions because of the constraints of traditional materials. In this work, adamantane (Ad) groups were grafted onto poly (N-isopropyl acrylamide) (PNIPAm) to synthesize the PNIPAm derivative (Ad-PNIPAm) by radical polymerization, which was further used to fabricate the semi-interpenetrating network (IPN) composite hydrogel (Ad-PNIPAm gel) that had dual temperature and solvent response optically tunable behavior under the assisted polymerization of NIPAM and chemical crosslinking of N,N’-methylene diacrylamide (MBA). The resultant composite hydrogel exhibited sensitive solvent and temperature stimulus response, high resolution and inducible reversible information recording, self-encryption and decryption functions. By changing the grafting degree of Ad-MA in Ad-PNIPAm, the hydrophilic-hydrophobic balance of Ad-PNIPAm could be adjusted to regulate the stimulus response of Ad-PNIPAm gel. As the grafting degree of Ad groups increased, the response temperature of Ad-PNIPAm gel gradually decreased, while the solvent response sensitivity was enhanced successively. In addition, this work not only controlled the encryption and decryption process of composite hydrogels by exploring different concentrations of ethanol solutions and various organic solvents, but also extended the information confidentiality time to the maximum extent and regulated the encryption and decryption process by introducing the host-guest recognition effects of β-cyclodextrin (β-CD) and Ad. Compared with the traditional PNIPAm hydrogel, the fabricated composite hydrogel possessed a wider temperature response range and a higher solvent response threshold, which could realize information entry, encryption and decryption at low temperatures, making the PNIPAm hydrogel based information processing model more suitable for real life scenarios. This PNIPAm based composite hydrogel with multiple regulation and multiple responses exhibited great potential in the fields of information writing and encryption/decryption.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
He Shao,Yu Ji,Ruiheng Wang,Jing Liu,Yueqing Li,Benxin Liu,Wen Li,Yannan Xie,Linghai Xie,Johnny C. Ho,Wei Huang,Haifeng Ling
Effectively handling massive information in complex lighting conditions is crucial for security-focused machine vision, as it relies on precise image feature detection and encryption/decryption to ensure integrity and confidentiality. Traditional hardware, primarily based on complementary metal-oxide-semiconductor (CMOS) technology, struggles with the complexity of processing tasks around the clock. To address this challenge, a ternary organic heterostructure visuomorphic phototransistor was tailored for adaptive critical image processing. The light coupling induced by the porous heterostructural layer enhances the light absorption efficiency by 2.5-fold. Our phototransistor exhibits bidirectional photoresponse across the visible and near-infrared (NIR) spectral regions, enabling adaptive edge detection in varying lighting conditions with precision above 85 %. The phototransistor array facilitates image encryption/decryption with a superior accuracy of 12 %/90 % compared to existing counterparts. This ternary organic hetero-integration combines multiple response modes, enabling compact and efficient critical feature processing.
研究领域:
材料科学
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光学工程
·
机器视觉
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Mengyao Li,Haifei Wan,Jingyong Xiong,Linyu Wang,Li Yang,Li Wang,Yonghai Song
Luminescent covalent organic frameworks (LCOFs) is a promising luminescent material with huge potential for various applications because it can integrate various chromophores into its porous ordered structure. A facile and effective approach to edit LCOFs emission is very necessary but remains a challenge. Herein, a rigidity-flexibility combination strategy to edit the luminescence properties of LCOFs was proposed by using a flexible fluorescent 1,3,5-tris(phenylacetylene) benzene with propeller-like conformation as center skeleton and linkers with different rigidity and conjugation degree. Since the conjugated degree of LCOFs’ frameworks depended on conformation of propeller-like 1,3,5-tris(phenylacetylene)benzene skeleton, the emission wavelengths of 1,3,5-tris (phenylacetylene)benzene-based LCOFs could be edited by linkers to tune conjugated degree of the frameworks. These 1,3,5-tris(phenylacetylene)benzene-based LCOFs emitted blue, green, yellow, orange and red light depending on the conjugation degree caused by the effect of the linkers of melem, terephthalic dihydrazide, hydrazine hydrate and p-phenylenediamine on the conformation of central skeleton. Binary or ternary mixed 1,3,5-tris(phenylacetylene)benzene-based LCOFs were used for white emission, white light-emitting diodes and information encryption/decryption. The work provides a simple yet efficient method to systematically edit the emission behaviors of LCOFs by linker engineering.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yiyao Liu,Yuqing Li,Mingzhe Chen,Fei Pang,Lili Yang,Dengteng Ge
Dynamic optical materials show significant potential for advanced information encryption and anti-counterfeiting, yet multimodal non-contact decryption systems remain challenging. Herein, a feasible strategy is proposed for spatiotemporal encryption through non-contact modulation of structural color (SC), photochromic color (PC), and fluorescent color (FC). This secure film is achieved via compartmentalized microdroplet encapsulation and curing (CMEC) technique based on crosslinked polydimethylsiloxane. The microdroplet integrates three components: (i) superparamagnetic Fe 3 O 4 @SiO 2 nanoparticles (SPIONs) for magnetically responsive SC modulation, (ii) methyl-functionalized spiropyran (MSP) for reversible PC switching and (iii) nitrogen-doped carbon dots (NCDs) that enable time-evolving FC transitions via fluorescence resonance energy transfer with MSP. Initial static information concealment is achieved via optimization of SPIONs parameters. Spatial encryption synergizes SC (red to purple) with PC (red), while temporal security stems from adjustable FC (from blue through pink to red). The CMEC strategy allows facile preparation of multimodal films with versatile compositions. We arrange pixel arrays in single, dual, and triple modes. This yields a Morse-code-based spatiotemporal encryption system that affords over 7.9 × 10 28 rewritable programming possibilities. This methodology establishes a generalizable platform for multimodal high-security encryption systems toward practical applications.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Hui Liu,Hongxiang Zhu,Shanshan Yu,Zihan Zhao,Yujie Duan,Siyuan Xia,Huanhuan Huang,Lei Wang,Hui He
Self-erasing materials with stepwise decryption are ideal for the security of information transmission. Here, a time-locked self-erasing material (TLSEM) with stepwise decryption is constructed by means of cellulose nanocrystal (CNC) bridge bond phosphor donor and gold nanoclusters (GNCs) acceptor. CNC integrated donor and acceptor, inhibited self-aggregation, enhanced the fluorescence intensity, and stability of GNCs and improved the energy transfer efficiency (49.65 %). The color pattern of TLSEM presented on the time scale was regulated by the donor and acceptor ratios based on the change in the energy transfer degree. Therefore, a TLSEM with different donor and acceptor ratios were implemented for the information encryption array, which presented the “time lock” information at 2 min and completely disappeared after 15 min through pH and cysteine encoding, and changed significantly from intricate orange–red–green to correct green with time. This time-dependent self-erasing material with stepwise decryption is excellent for special information transmission security.
研究领域:
材料科学
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信息安全
·
纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）