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A Review on Metal-and Metal Oxide-Based Nanozymes:Properties,Mechanisms,and Applications

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Nano-Micro Letters 2021年第10期13卷 147-199页

作者： Qianwen Liu Amin Zhang Ruhao Wang Qian Zhang daxiang cui Institute of Nano Biomedicine and Engineering Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment InstrumentDepartment of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong University800 Dongchuan RDShanghai 200240People’s Republic of China Institute of Nano Biomedicine National Engineering Research Center for Nanotechnology28 Jiangchuan EasternroadShanghai 200241People’s Republic of China

Since the ferromagnetic(Fe_(3)O_(4))nanoparticles were firstly reported to exert enzyme-like activity in 2007,extensive research progress in nanozymes has been made with deep investigation of diverse nanozymes and rapid development of related *** promising alterna-tives for natural enzymes,nanozymes have broadened the way toward clinical medicine,food safety,environmental monitoring,and chemical *** past decade has witnessed the rapid development of metal-and metal oxide-based nanozymes owing to their remarkable physicochemical proper-ties in parallel with low cost,high stability,and easy *** is widely known that the deep study of catalytic activities and mechanism sheds sig-nificant influence on the applications of *** review digs into the characteristics and intrinsic properties of metal-and metal oxide-based nanozymes,especially emphasizing their catalytic mechanism and recent applications in biological analysis,relieving inflammation,antibacterial,and cancer *** also conclude the present challenges and provide insights into the future research of nanozymes constituted of metal and metal oxide nanomaterials.

关键词： Metal-and metal oxide-based nanozymes Intrinsic properties Catalytic mechanism Applications

Geometric structure design of passive label-free microfluidic systems for biological micro-object separation

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Microsystems & Nanoengineering 2022年第3期8卷 1-28页

作者： Hao Tang Jiaqi Niu Han Jin Shuing Lin daxiang cui Institute of Nano Biomedicine and Engineering Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment InstrumentDepartment of Instrument Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong University800 Dongchuan RDShanghai 200240China National Engineering Research Center for Nanotechnology Shanghai Jiao Tong University28 Jiangchuan EasternroadShanghai 200241China

Passive and label-free microfluidic devices have no complex external accessories or detection-interfering label *** devices are now widely used in medical and bioresearch applications,including cell focusing and cell *** structure plays the most essential role when designing a passive and label-free microfluidic *** exquisitely designed geometric structure can change particle trajectories and improve chip ***,the geometric design principles of passive and label-free microfluidics have not been comprehensively ***,we review the geometric innovations of several microfluidic schemes,including deterministic lateral displacement(DLD)inertial microfluidics(IMF),and viscoelastic microfluidics(VEM),and summarize the most creative innovations and design principles of passive and label-free *** aim to provide a guideline for researchers who have an interest in geometric innovations of passive label-free microfluidics.

关键词： passive structure fluid

Machine Learning Approach to Enhance the Performance of MNP?Labeled Lateral Flow Immunoassay

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Nano-Micro Letters 2019年第1期11卷 132-146页

作者： Wenqiang Yan Kan Wang Hao Xu Xuyang Huo Qinghui Jin daxiang cui Department of Instrument Science and Engineering School of Electronic Information and Electrical Engineering Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment InstrumentKey Laboratory of Thin Film and Microfabrication (Ministry of Education) Shanghai Jiao Tong University School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Department of Biomedical Engineering JiLin Medical University State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Faculty of Electrical Engineering and Computer Science Ningbo University

The use of magnetic nanoparticle(MNP)-labeled immunochromatography test strips(ICTSs) is very important for point-ofcare testing(POCT). However, common diagnostic methods cannot accurately analyze the weak magnetic signal from ICTSs, limiting the applications of POCT. In this study, an ultrasensitive multiplex biosensor was designed to overcome the limitations of capturing and normalization of the weak magnetic signal from MNPs on ICTSs. A machine learning model for sandwich assays was constructed and used to classify weakly positive and negative samples, which significantly enhanced the specificity and sensitivity. The potential clinical application was evaluated by detecting 50 human chorionic gonadotropin(HCG) samples and 59 myocardial infarction serum samples. The quantitative range for HCG was 1–1000 mIU mL^(-1) and the ideal detection limit was 0.014 mIU mL^(-1), which was well below the clinical threshold. Quantitative detection results of multiplex cardiac markers showed good linear correlations with standard values. The proposed multiplex assay can be readily adapted for identifying other biomolecules and also be used in other applications such as environmental monitoring, food analysis, and national security.

关键词： Point-of-care testing Immunochromatography test strips Magnetic nanoparticles Machine learning Support vector machine

Assembly of Nanowires into Macroscopic One‑Dimensional Fibers in Liquid State

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Advanced Fiber Materials 2023年第3期5卷 928-954页

作者： Wentao Cao Xinyu Zhao Bingqiang Lu daxiang cui Feng Chen Center for Orthopaedic Science and Translational Medicine Department of OrthopaedicsShanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200072People’s Republic of China National Engineering Research Center for Nanotechnology Shanghai 200241People’s Republic of China Institute of Micro‑Nano Science and Technology School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Natural structural materials,such as spider silk,wood,and bone,are universally acknowledged as the gold standard for the ideal combinations of strength and *** exceptional integrated performance of these biological materials can be ascribed to their multiscale hierarchical architectures and *** the hierarchical assembly feature of natural materials,artificial fibers,which are generated through the one-dimensional(1D)assembly of nanowires,have been widely reported with remarkable flexibility and ***,the distinguishing feature of nanowires’1D assembly can bridge the unique properties of nanowires with their potential functional *** tutorial review summarizes the recent developments in the assembly of nanowires into macroscopic 1D fibers in the liquid *** begin by introducing the general strategies and mechanisms for assembling nanowires in one direction and then,illustrate their potential applications in energy storage,sensors,biomedical engineering,***,a brief summary and some personal perspectives on the future research directions of nanowires’1D assembly are also proposed.

关键词： One-dimensional assembly Nanowires Fibers Liquid state

Bioinspired MXene-Based User-Interactive Electronic Skin for Digital and Visual Dual-Channel Sensing

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Nano-Micro Letters 2022年第7期14卷 228-245页

作者： Wentao Cao Zheng Wang Xiaohao Liu Zhi Zhou Yue Zhang Shisheng He daxiang cui Feng Chen Department of Orthopedic School of MedicineSpinal Pain Research InstituteShanghai Tenth People’s HospitalTongji UniversityShanghai 200072People’s Republic of China National Engineering Research Center for Nanotechnology Shanghai 200241People’s Republic of China Institute of Micro-Nano Science and Technology School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

User-interactive electronic skin(e-skin) that could convert mechanical stimuli into distinguishable outputs displays tremendous potential for wearable devices and health care applications. However, the existing devices have the disadvantages such as complex integration procedure and lack of the intuitive signal display function. Here, we present a bioinspired user-interactive e-skin, which is simple in structure and can synchronously achieve digital electrical response and optical visualization upon external mechanical stimulus. The e-skin comprises a conductive layer with a carbon nanotubes/cellulose nanofibers/MXene nanohybrid network featuring remarkable electromechanical behaviors, and a stretchable elastomer layer, which is composed of silicone rubber and thermochromic pigments. Furthermore, the conductive nanohybrid network with outstanding Joule heating performance can generate controllable thermal energy under voltage input and then achieve the dynamic coloration of silicone-based elastomer. Especially, such an innovative fusion strategy of digital data and visual images enables the e-skin to monitor human activities with evermore intuition and accuracy. The simple design philosophy and reliable operation of the demonstrated e-skin are expected to provide an ideal platform for next-generation flexible electronics.

关键词： MXene Electronic skin Electromechanical behavior Joule heating Visualization

Potassium sodium tartrate-assisted hydrothermal synthesis of BaLuFs ：Yb3＋/Er3＋ nanocrystals

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Particuology 2016年第1期14卷 164-169页

作者： Rongjin Sun Peiyu Qiu Ting Yin Guo Gao Hualin Fu Kan Wang Chunlei Zhang daxiang cui Institute of Nano Biomedicine and Engineering Department of Instrument Science and Technology Key Laboratory for Thin Film and MicrofabricationTechnology of Ministry of Education School of Electronic Information and Electrical Engineering School of Materials Science and Engineering Shanghai JiaoTong University Shanghai 200240 China

Highly-dispersed BaLuFs：yb3＋/Er3＋ nanocrystals were prepared by a facile potassium sodium tartrate- assisted hydrothermal method. The average particle size was approximately 20-25 nm. The formation mechanism is discussed. Potassium sodium tartrate led to form a complex with an approximately three- dimensional network structure, which insured largely concurrent nucleation. As a result, we acquired uniform nanoparticles. The hydrothermal temperature, holding time, and pH value were important fac- tors affecting the formation of the BaLuF5 ：yb3＋/Er3＋ nanocrystals. We investigated their influence on the formation and realized the optimal reaction parameters. Remarkably, potassium sodium tartrate also con- tributed to the biocompatibility and potential biomedical applications of BaLuFs ：Yb3＋/Er3＋ nanocrystals by decomposing into small organic groups attached to the nanoparticles.

关键词： Upconversion BaLuFs PST Hydrothermal synthesis

Metal-organic frameworks based surface-enhanced Raman spectroscopy technique for ultra-sensitive biomedical trace detection

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Nano Research 2023年第2期16卷 2968-2979页

作者： Yuna Zhang cuili Xue Yuli Xu Shengsheng cui Alexander A.Ganeev Kistenev Yury V Anna Gubal Victoria Chuchina Han Jin daxiang cui Department of Instrument Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China St Petersburg University 7/9 Universitetskaya Emb.St Petersburg 199034Russia Tomsk State University Lenina Av.36TomskTomsk 634050Russia National Engineering Research Center for Nanotechnology Shanghai 200241China

Metal-organic frameworks(MOFs)have attracted widespread interest due to their unique and unprecedented advantages in microstructures and ***,surface-enhanced Raman scattering(SERS)technology has also rapidly developed into a powerful fingerprint spectroscopic technique that can provide rapid,non-invasive,non-destructive,and ultra-sensitive detection,even down to single molecular ***,a considerable amount of researchers combined MOFs with the SERS technique to further improve the sensing performance and broaden the applications of SERS ***,representative synthesis strategies of MOFs to fabricate SERS-active substrates are summarized and their applications in ultra-sensitive biomedical trace detection are also ***,relative barriers,advantages,disadvantages,future trends,and prospects are particularly discussed to give guidance to relevant researchers.

关键词： metal-organic framework(MOF) surface-enhanced Raman scattering(SERS) synthesis strategy biomedical trace detection

Finger-actuated wireless-charging wearable multifunctional sweatsensing system for levodopa and vitamin C

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Nano Research 2024年第4期17卷 3096-3106页

作者： Qihong Ning Shaoqing Feng Qingwen Sun Ruoyao Yu Tangan Li Hao Xu daxiang cui Kan Wang School of Sensing Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityKey Laboratory of Thin Film and Microfabrication Technology(Ministry of Education)Shanghai 200240China Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Efficient portable wearable sweat sensors allow the long-term monitoring of changes in the status of biomarkers in sweat,which can be useful in diagnosis,medication,and nutritional *** this study,we designed and tested a wireless,battery-free,flexible,self-pumping sweat-sensing system that simultaneously tracks levodopa and vitamin C levels in human sweat and detects body *** system includes a microfluidic chip with a self-driven pump and anti-reflux valve,a flexible wireless circuit board,and a purpose-designed smartphone *** microfluidic chip is used for the efficient collection of sweat and the drainage of excess *** dual electrochemical sensing electrodes in the chip are modified with functional materials and appropriate enzymatic reagents,achieving excellent selectivity and *** sensitivities of the levodopa sensor and the vitamin C sensor are 0.0073 and 0.0018μA·μM^(-1),respectively,and the detection correlation coefficients of both exceed *** sensors have a wide linear detection range of 0–100 and 0–1000μM,respectively,and low detection limits of 0.28 and 17.9μM,*** flexible wireless circuit board is equipped with the functions of wireless charging,electrical signal capture and processing,and wireless *** data recorded from each sensor are displayed on a smartphone via a self-developed app.A series of experimental results confirmed the reliability of the sweat-sensing system in noninvasively monitoring important biomarkers in the human body and its potential utility in the comprehensive assessment of biological health.

关键词： self-pumping microfluidic channel wireless charging wearable sensor health monitoring

Dual-signal readout paper-based wearable biosensor with a 3D origami structure for multiplexed analyte detection in sweat

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Microsystems & Nanoengineering 2023年第2期9卷 157-166页

作者： Yuemeng Cheng Shaoqing Feng Qihong Ning Tangan Li Hao Xu Qingwen Sun daxiang cui Kan Wang School of Sensing Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityKey Laboratory of Thin Film and Microfabrication Technology(Ministry of Education)200240 ShanghaiChina Department of Plastic and Reconstructive Surgery Shanghai Ninth People's HospitalShanghai JiaoTong University School of Medicine200011 ShanghaiChina School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong University200240 ShanghaiChina

In this research,we design and implement a small,convenient,and noninvasive paper-based microfluidic sweat sensor that can simultaneously detect multiple key biomarkers in human *** origami structure of the chip includes colorimetric and electrochemical sensing *** colorimetric sensing regions are modified with specific chromogenic reagents to selectively identify glucose,lactate,uric acid,and magnesium ions in sweat,as well as the pH *** regions of electrochemical sensing detect cortisol in sweat by molecular *** entire chip is composed of hydrophilically and hydrophobically treated filter paper,and 3D microfluidic channels are constructed by using folding *** thread-based channels formed after the hydrophilic and hydrophobic modifications are used to control the rate of sweat flow,which in turn can be used to control the sequence of reactions in the differently developing colored regions to ensure that signals of the best color can be captured simultaneously by the colorimetric sensing ***,the results of on-body experiments verify the reliability of the proposed sweat sensor and its potential for the noninvasive identification of a variety of sweat biomarkers.

关键词： Dual structure wear