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sensor array and color-coded test paper tongue based on multivariate cross-responsive AIEgen functionalized bimetallic lanthanide infinite coordination polymers: Toward smart identification and systematic analysis of antibiotics

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CHEMICAL ENGINEERING JOURNAL 2024年 500卷

作者： Zhu, Junxuan Wu, Yuanyue Xue, Chenyi Zhang, Manman Zhang, Yiling Zhang, Xuefei Zhou, Tianshu Deng, Jingjing East China Normal Univ Shanghai Engn Res Ctr Biotransformat Organ Solid W Sch Ecol & Environm Sci Shanghai Key Lab Urban Ecol Proc & Ecorestorat 500 Dongchuan Rd Shanghai 200241 Peoples R China Inst Ecochongming 3663 Zhongshan Rd Shanghai 200062 Peoples R China

Building and improving the monitoring technology system for newly emerging contaminants with a positive attitude is the first step to enhance governance capacity, which is in good accordance with the requirements of worldwide sustainable development strategy nowadays. With the urgent needs of smart identification and simultaneous detection of multiple antibiotics co-existing in the aquatic system in mind, we intentionally synthesized the aggregation-induced emission luminogen (AIEgen) functionalized bimetallic lanthanide infinite coordination polymers (TPE-TS@Tb/Eu-AMP ICPs) series. The intrinsic physical and chemical properties of target antibiotics (flumequine, four kinds of tetracyclines, and sulfadiazine) triggered the complex chemical recognition reactions of TPE-TS@Tb/Eu-AMP ICPs series to give birth to multivariate cross-responses. Based on these theoretical-oriented sensing elements and rationally selected smart statistical tools, the "lab-on-TPETS@Tb/Eu-AMP ICPs" antibiotic sensor array is established with superior analytical performance. Moreover, the unique optical dominance of TPE-TS@Tb/Eu-AMP ICPs series on solid substrate enabled the subsequent exploitation of test paper tongue (TPT) with simultaneously altered RGB values as elements. Being further coded by the excitation modulation on commercial dark box UV-lamp, even promoted analytical behaviors of the TPT can be realized for the first time. With the aid of the smartphone, robust pattern recognition and accurate systematic analysis of antibiotics in the actual environmental samples were achieved by our sensor array and colorcoded TPT, which may provide important scientific supports and technical reserves for the antibiotic control actions in future.

关键词： Antibiotics TPE-TS@Tb/Eu-AMP ICPs series Multivariate cross response sensor array Color-coded test paper tongue

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Multi-Object Recognition and Motion Detection Based on Flexible Pressure sensor array and Deep Learning

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APPLIED SCIENCES-BASEL 2025年第6期15卷 3302-3302页

作者： Zhang, Hao Tao, Yanan Shi, Kai Li, Jiali Shi, Jianjun Xu, Shaofeng Guo, Ying Donghua Univ Coll Phys Shanghai 201620 Peoples R China Fudan Univ Yiwu Res Inst Yiwu 322099 Peoples R China

With ongoing technological advancements, artificial tactile systems have become a prominent area of research, aiming to replicate human tactile capabilities and enabling machines and devices to interact with their environments. Achieving effective artificial tactile sensing relies on the integration of high-performance pressure sensors, precise signal acquisition, robust transmission, and rapid data processing. In this study, we developed a sensor array system based on flexible pressure sensors designed to recognize objects of varying shapes and sizes. The system comprises a multi-channel acquisition circuit and a signal transmission circuit and employs a convolutional neural network (CNN) to classify distinct signal patterns. In a test on an individual, the test results demonstrate that the system achieves a high recognition accuracy of 99.60% across two sphere sizes, three cylinder sizes, a cone, and a rectangular prism. In a group of eight people, it can achieve a recognition accuracy of 93.75%. Furthermore, we applied this sensor array system in an experimental setting involving a ball-throwing action, and it effectively recognized four distinct stages: empty hand, holding the ball, throwing, and catching. In repeated tests by other individuals, it was also able to clearly distinguish each stage. The development of artificial tactile systems allows robots to engage with their environments in a more nuanced and precise manner, enabling complex tasks such as surgical procedures, enhancing the interactive experience of wearable devices, and increasing immersion in virtual reality (VR) and augmented reality (AR). When integrated with deep learning, artificial tactile sensing shows significant potential for creating more intelligent and efficient applications.

关键词： artificial tactile systems flexible pressure sensors sensor array shapes sizes throwing a ball

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Colorimetric - Fluorescence - Photothermal tri-mode sensor array combining the machine learning method for the selective identification of sulfonylurea pesticides

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BIOsensorS & BIOELECTRONICS 2025年 277卷 117286页

作者： Tian, Tian Song, Donghui Zhen, Linxue Bi, Zhichun Zhang, Ling Huang, Hui Li, Yongxin Jilin Univ Coll New Energy & Environm Key Lab Water Resources & Aquat Environm Jilin Pro Minist EducKey Lab Groundwater Resources & Enviro Changchun 130021 Peoples R China Jilin Univ Coll Food Sci & Engn Changchun 130025 Peoples R China

Though cholinesterase-based method could detect two types of pesticides (organophosphorus and carbamate), they had weak sensing on sulfonylurea pesticides. In our previous work, the peroxidase-like reaction system of nanozyme - H2O2 - TMB showed selective detection of sulfonylurea pesticides, but the single-signal output sensing platform was easily affected by complex matrix background, cross-contamination and human error. Therefore, this work used colorimetric, photothermal, and fluorescent signals of the nanozyme reaction as sensing units for the detection of pesticides. This is the first time that photothermal signals have been used to construct a sensor array. When the concentration of interfering substances was 25 times that of pesticides, the method was still unaffected and had excellent selectivity and anti-interference performance. Meanwhile, a concentration-independent differentiation mode was established based on the K-nearest neighbor (KNN) algorithm. The pesticides were detected and distinguished with 100% accuracy. This work contributed to the detection of sulfonylurea pesticides in complex environmental/food matrices, bridging the gap of existing pesticide detection methods and providing an effective method for food safety detection.

关键词： Sulfonylurea pesticides Nanozyme sensor array Machine learning Multi-signal

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Portable hydrogel-based tri-channel fluorescence sensor array for visual detection of multiple explosives

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Nano Research 2024年第7期17卷 6483-6492页

作者： Wenxing Gao Wenfeng Liu Saijin Huang Lin Wang Yingying Jian Yutong Li Weiwei Wu Li Shang State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China School of Advanced Materials and Nanotechnology Xidian UniversityXi'an 710126China Honors College Northwestern Polytechnical UniversityXi'an 710119China

The identification and detection of various types of explosives are essential for human health and environmental ***-based sensing approach offers significant advantages in detecting multi-analytes simultaneously,thereby holding great potential in identifying multiple ***,we report a tri-channel fluorescence array composed of three distinct fluorescence probes based on gold nanoclusters and nicotinamide adenine dinucleotide with well-separated emission *** the specific interactions of explosives with different fluorescent probes and the yielded response patterns,seven explosives can be successfully distinguished with 100%*** particular,the sensor array exhibits excellent performance in the quantitative analysis of individual explosive and the differentiation of multiple explosive *** facilitate the field detection towards practical application,the tri-channel fluorescence array was further integrated with polymer *** fabricated portable hydrogel-based array sensors can not only visually identify seven different explosives by their distinct fluorescence color change,but also enable quantitative detection based on linear discriminant analysis(LDA)together with a *** study illustrates the great potential of hydrogel-based fluorescence sensor array as robust sensors for explosives,which also holds significant promise for the development of portable explosive devices towards practical application.

关键词： sensor array gold nanoclusters explosives fluorescence hydrogels

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Fluorescent discrimination for snake venom via a dual-mode supramolecular sensor array

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PURE AND APPLIED CHEMISTRY 2025年

作者： Tian, Han-Wen Tian, Jia-Hong Hu, Xin-Yue Guo, Dong-Sheng Tianjin Normal Univ Acad Interdisciplinary Studies Intelligent Mol Coll Chem Tianjin Key Lab Struct & Performance Funct Mol Tianjin 300387 Peoples R China Nankai Univ Tianjin Key Lab Biosensing & Mol Recognit Collaborat Innovat Ctr Chem Sci & Engn Coll ChemKey Lab Funct Polymer MatMinist EducSt Tianjin 300071 Peoples R China

Precise snake venom identification is the prerequisite for clinical treatment, production of antiserum, basic research, and other applications. Unfortunately, it is still a challenging task which mainly originates from their extraordinary complicated protein composition. Differential sensing strategy was applied benefiting from its advantage in discrimination of complex mixtures. Herein, A dual-mode supramolecular fluorescent sensor array based on the heteromultivalent sensing strategy was developed. The heteromultivalent macrocyclic coassemblies with strong and pan-selective binding to proteins were employed to construct sensor units. Fluorescence intensity and anisotropy signals were integrated, which were expected to show multidimensional information of proteins, such as surface groups, protein structures, and molecular weights. Finally, a supramolecular sensor array with the ability of facile, rapid and general species-specific identification and taxonomic classification for snake venom was constructed. The sensor array also demonstrated its advantage in semiquantitative analysis and multi-level identification, suggesting its great potential for practical use.

关键词： ICPOC-26 molecular recognition sensor array snake venom supramolecular chemistry

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Overcoming the Limits of Cross-Sensitivity:Pattern Recognition Methods for Chemiresistive Gas sensor array

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Nano-Micro Letters 2024年第12期16卷 285-341页

作者： Haixia Mei Jingyi Peng Tao Wang Tingting Zhou Hongran Zhao Tong Zhang Zhi Yang Key Lab Intelligent Rehabil&Barrier Free Disable(Ministry of Education) Changchun UniversityChangchun 130022People’s Republic of China Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China National Key Laboratory of Advanced Micro and Nano Manufacture Technology Department of Micro/Nano ElectronicsSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China

As information acquisition terminals for artificial olfaction,chemiresistive gas sensors are often troubled by their cross-sensitivity,and reducing their cross-response to ambient gases has always been a difficult and important point in the gas sensing *** recognition based on sensor array is the most conspicuous way to overcome the cross-sensitivity of gas *** is crucial to choose an appropriate pattern recognition method for enhancing data analysis,reducing errors and improving system reliability,obtaining better classification or gas concentration prediction *** this review,we analyze the sensing mechanism of crosssensitivity for chemiresistive gas *** further examine the types,working principles,characteristics,and applicable gas detection range of pattern recognition algorithms utilized in gas-sensing ***,we report,summarize,and evaluate the outstanding and novel advancements in pattern recognition methods for gas *** the same time,this work showcases the recent advancements in utilizing these methods for gas identification,particularly within three crucial domains:ensuring food safety,monitoring the environment,and aiding in medical *** conclusion,this study anticipates future research prospects by considering the existing landscape and *** is hoped that this work will make a positive contribution towards mitigating cross-sensitivity in gas-sensitive devices and offer valuable insights for algorithm selection in gas recognition applications.

关键词： Pattern recognition sensor array Chemiresistive gas sensor Cross-sensitivity Artificial olfactory

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Intramicellar sensor assays: Improving sensing sensitivity of sensor array for thiol biomarkers

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BIOsensorS & BIOELECTRONICS 2025年 273卷 117173页

作者： Niu, Hongyang Li, Haichun Wang, Yi Hu, Bingtao Liu, Xue Liaoning Univ Liaoning Prov Key Lab Green Synth & Preparat Chem Shenyang 110036 Peoples R China Nanyang Technol Univ Sch Phys & Math Sci Singapore 637371 Singapore Tianjin Univ Anal Ctr Tianjin 300072 Peoples R China Gen Hosp Northern Theater Command Dept Lab Med Ctr Shenyang 110016 Peoples R China

array-based analysis allows for precise disease diagnosis by simultaneously detecting multiple biomarkers. However, most array sensing platforms rely on non-covalent interactions between sensors and analytes, which limits their sensitivity. This study enhances the sensitivity of array analysis for thiol biomarkers by incorporating polyion complex micelles into the sensor array design. Polyion complex micelles are formed through the selfassembly of carbon dots (CDs) and anionic diblock copolymers. The sensing detection process can occur inside the core of the micelle, the confined space and ionic environment within the core reduce the interaction distance between CDs, metal ions, and analytes, thereby significantly improving detection sensitivity while minimizing metal ions consumption. The developed array system can accurately identify multiple thiols across a broad concentration range (0.5-1000 mu M) with 100% accuracy. Additionally, support vector machine (SVM) analysis reveals a detection limit of approximately 0.1 mu M for individual thiol systems. Compared to non-micellar approaches, this micelle-based array reduces the detection limit for thiol biomarkers by 20-fold and decreases Ag+ usage by 40-fold. The system is suitable for both qualitative and quantitative analysis of thiol biomarkers, offering a powerful tool for the accurate diagnosis of thiol-related diseases.

关键词： sensor array Polyionic complex micelles Thiols Biomarkers

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A colorimetric sensor array consisted of CaxMn1-xWO4 with high oxidase-like activity to detect antioxidants

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sensorS AND ACTUATORS B-CHEMICAL 2025年 422卷

作者： Han, Zhe Zhang, Shihang Yan, Guohao Yi, Shasha Wang, Yu Hou, Xinghui Zhang, Zongtao Zhang, Liying Zhengzhou Univ Sch Mat Sci & Engn 100 Sci Rd Zhengzhou 450001 Peoples R China

Antioxidant detection is highly significant in practical applications. This study establishes an optical sensor array capable of simultaneous and convenient detection of multiple antioxidants in real samples. CaxMn1-xWO4 (CMW) synthesized via hydrothermal method with abundant surface oxygen vacancies and high internal electron transfer efficiency exhibits strong oxidase-like activity, which can oxidize TMB to blue product oxTMB using oxygen as reaction substrate. The presence of antioxidants weakens TMB oxidation, leading to a lighter blue color in the system. Therefore, CMW can be employed for colorimetric detection of antioxidants. Then CMW samples with varying Ca to Mn ratios were prepared, followed by the establishment of an optical sensor array. The detection systems were photographed, and PCA analysis of the RGB parameters was performed, enabling simultaneous qualitative and quantitative detection of nine kinds of antioxidants.

关键词： Nanozyme Oxidase-mimetic activity Calcium tungstate Colorimetric detection sensor array

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Omnidirectionally Stretchable Spin-Valve sensor array with Stable Giant Magnetoresistance Performance

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ACS NANO 2025年第5期19卷 5699-5708页

作者： Pan, Lili Xie, Yali Yang, Huali Bao, Xilai Chen, Jinxia Zou, Mengting Li, Run-Wei Chinese Acad Sci Key Lab Magnet Mat & Devices CAS Ningbo 315201 Peoples R China Chinese Acad Sci Ningbo Inst Mat Technol & Engn Zhejiang Prov Key Lab Magnet Mat & Applicat Techno Ningbo 315201 Peoples R China Univ Chinese Acad Sci Sch Future Technol Beijing 100049 Peoples R China Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China

Flexible magnetic sensors, which have advantages such as deformability, vector field sensing, and noncontact detection, are an important branch of flexible electronics and have significant applications in fields such as magnetosensitive electronic skin. Human skin surfaces have complicated deformations, which pose a demand for magnetic sensors that can withstand omnidirectional strain while maintaining stable performance. However, existing flexible magnetic sensor arrays can only withstand stretching along specific directions and are prone to failure under complicated deformations. Here, we demonstrate an omnidirectionally stretchable spin-valve sensor array with high stretchability and excellent performance. By integrating the modulus-distributed structure with liquid metal, the sensor can maintain its performance under complex deformations, enabling the overall system with omnidirectional stretchability. The fabricated spin-valve sensor exhibits a nearly unchanged giant magnetoresistance ratio of 8% and a maximum sensitivity of 0.93%/Oe upon omnidirectional strain up to 86% and can maintain stable performance without fatigue for over 1000 stretching cycles. Furthermore, this spin-valve sensor array is characterized by stable sensing performance for magnetic fields under complicated deformations and can be applied as a magnetosensitive electronic skin. Our results provide insights into the development of next-generation stretchable and wearable magnetoelectronics.

关键词： magnetosensitive electronic skin omnidirectionalstretchability spin-valve sensor array modulus-distributedstructure

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Four-Mask Technique for Manufacturing the Perovskite-on-Silicon sensor array for Ultraviolet Light Imaging

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ADVANCED FUNCTIONAL MATERIALS 2025年第0期

作者： Zhang, Xuning Tang, Feixiang Sun, Bo Liu, Xingyue Liao, Guanglan Li, Weihua Liu, Sheng Huazhong Univ Sci & Technol State Key Lab Digital Mfg Equipment & Technol Wuhan 430074 Peoples R China South China Univ Technol Sch Mech & Automot Engn Guangzhou 510640 Peoples R China Wuhan Univ Sch Power & Mech Engn Key Lab Transients Hydraul Machinery Minist Educ Wuhan 430072 Peoples R China Huazhong Univ Sci & Technol Sch Aeronaut & Astronaut Wuhan 430074 Peoples R China China Univ Geosci Wuhan Sch Mech Engn & Elect Informat Wuhan 430079 Peoples R China

Perovskite-based image sensors are widely explored and recognized as the technology of choice for future optoelectronics. Suffering from the incompatibility between perovskite and conventional lithography technology, the challenges of developing high-resolution image sensors come from how to pattern the perovskite film with high precision and integrate it with pixel circuits. Recently, a four-mask technique for manufacturing perovskite-on-silicon sensor arrays, which are composed of a pixeled perovskite film and a planar crossbar circuit is demonstrated. Patterning precision for perovskite films attained 2 mu m, ranking top among the previous research. The circuit is also proven to have the highest level of integration, theoretically. A proof-of-concept image sensor showing the first demonstration of monolithic integration of patterned perovskite film with the bottom pixel circuit is successfully made public. Electro-optical performance of its pixels is further characterized and showed high uniformity, benefitting the image sensor in capturing the input light distribution with good spatial resolution. This work has thus set a milestone for perovskite-based image sensors and showed the potential of perovskites in micro-nanoelectronics.

关键词： four-mask technique optoelectronic devices sensor array ultraviolet imaging

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