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Revolutionizing digital healthcare networks with wearable strain sensors using sustainable fibers

SusMat 2024年第4期4卷 104-151页

作者： Junze Zhang Bingang Xu Kaili Chen Yi Li Gang Li Zekun Liu Nanotechnology Center School of Fashion and TextilesThe Hong Kong Polytechnic UniversityKowloonHong KongChina Department of Materials Imperial College LondonLondonUK Department of Materials University of ManchesterManchesterUK National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhouChina Botnar Research Center University of OxfordOxfordUK

Wearable strain sensors have attracted research interest owing to their poten-tial within digital healthcare,offering smarter tracking,efficient diagnostics,and lower *** rigid sensors,fiber-based ones compete with their flexibility,durability,adaptability to body structures as well as eco-friendliness to ***,the sustainable fiber-based wearable strain sensors for digital health are reviewed,and material,fabrication,and practical healthcare aspects are *** strain sensors predicated on various sensing modalities,be it resistive,capacitive,piezoelectric,or triboelectric,are explained and analyzed according to their strengths and weaknesses toward fabrication and *** applications in digital healthcare spanning from body area sensing networks,intelligent health management,and medical rehabilitation to mul-tifunctional healthcare systems are also ***,to create a more complete digital health network,wired and wireless methods of data collec-tion and examples of machine learning are elaborated in ***,the prevailing challenges and prospective insights into the advancement of novel fibers,enhancement of sensing precision and wearability,and the establishment of seamlessly integrated systems are critically summarized and *** endeavor not only encapsulates the present landscape but also lays the founda-tion for future breakthroughs in fiber-based wearable strain sensor technology within the domain of digital health.

关键词： advanced fibers digital health flexible electronics strain sensors wearables

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Heterophase junction engineering-induced Co spin-state modulation of CoSe_(2) for large-current hydrogen evolution reaction

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Rare Metals 2024年第6期43卷 2660-2670页

作者： Bao-Chai Xu Ya-Ping Miao Min-Qin Mao Dong-Lian Li Song Xie Wei-Hong Jin Shu Xiao Jing Wen Zaenab Abd-Allah Zhi-Tian Liu Xiang Peng Paul K.Chu Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China School of Textile Science and Engineering Xi'an Polytechnic UniversityXi'an 710048China Institute of Advanced Wear and Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China Institute of Safety Science and Engineering South China University of TechnologyGuangzhou 510641China Department of Engineering Manchester Metropolitan UniversityManchester M156BHUK Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongHong Kong 999077China

Efficient electrocatalysts are vital to large-current hydrogen production in commercial water splitting for green energy ***,a novel heterophase engineering strategy is described to produce polymorphic CoSe_(2)*** composition of the electrocatalysts consisting of both cubic CoSe_(2)(c-CoSe_(2))and orthorhombic CoSe_(2)(o-CoSe_(2))phases can be controlled *** results demonstrate that junction-induced spin-state modulation of Co atoms enhances the adsorption of intermediates and accelerates charge transfer resulting in superior large-current hydrogen evolution reaction(HER)***,the CoSe_(2)based heterophase catalyst with the optimal c-CoSe_(2)content requires an overpotential of merely 240 mV to achieve 1,000 mA·cm^(-2)as well as a Tafel slope of 50.4 mV·dec^(-1).Furthermore,the electrocatalyst can maintain a large current density of 1,500 mA·cm^(-2)for over 320 h without *** results reveal the advantages and potential of heterophase junction engineering pertaining to design and fabrication of low-cost transition metal catalysts for large-current water splitting.

关键词： Heterophase junction Spin-state Hydrogen evolution reaction Large current electrochemical hydrogen production Water splitting

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On textile biomedical engineering

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Science China(Technological Sciences) 2019年第6期62卷 945-957页

作者： LI Yi ZHANG Xin YING BaoAn College of Textile Science and Engineering Xi'an Polytechnic University Xi'an 710048 China School of Materials The University of Manchester Manchester Ml3 9PL United Kingdom Research Center of Clothing Engineering and Technology Apparel and Art Design College Xi'an Polytechnic University Xi'an 710048 China

The demand for advanced fiber biomaterials and medical devices has risen rapidly with the increasing of aging population in the world. To address this grand societal challenge, textile biomedical engineering(TBE) has been defined as a holistic and integrative approach of designing and engineering advanced fiber materials for fabricating textile structures and devices to achieve various functions such as drug delivery, tissue engineering and artificial implants, pressure therapy and thermal therapy,bioelectric/magnetic detection and stimulation for the medical treatment and rehabilitation of human body. TBE is multidisciplinary in nature and needs integration of cross disciplinary expertise in medical science, healthcare professionals, physiologists, scientists and engineers in chemistry, materials, mechanics, electronics, computing, textile and designers. Engineering fiber materials and designing textile devices for biomedical applications involve the integration of the fundamental research in physics, chemistry, mathematics, and computational science with the development of engineering principles and understanding on the relationship between textile materials/devices and human physiology, behaviour, medicine and health. Theoretical concepts have been advanced together with creating new knowledges created from molecules to cells, organs and body-textile systems, and developing advanced fiber materials, innovative textile devices and functional apparel products for healthcare,comfort, protection against harmful external environment, diseases prevention, diagnosis and treatment, as well as rehabilitations. A holistic, integrative and quantitative approach has been adopted for deriving the technical solutions of how to engineer fibers and textiles for the benefits of human health. This paper reviews the theoretical foundations for textile biomedical engineering and advances in the recent years.

关键词： biomaterials fibers textile biomedical engineering healthcare smart functions nano

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Functionalized Fiber-Based Strain Sensors:Pathway to Next-Generation Wearable Electronics

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Nano-Micro Letters 2022年第4期14卷 90-128页

作者： Zekun Liu Tianxue Zhu Junru Wang Zijian Zheng Yi Li Jiashen Li Yuekun Lai Department of Materials The University of ManchesterOxford RoadManchester M139PLUK College of Chemical Engineering Fuzhou UniversityFuzhou 350116China Institute of Textiles and Clothing Research Institute for Intelligent Wearable SystemsResearch Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHung HomHong KongSARChina

Wearable strain sensors are arousing increasing research interests in recent years on account of their potentials in motion detection,personal and public healthcare,future entertainment,man-machine interaction,artificial intelligence,and so *** research has focused on fiber-based sensors due to the appealing performance of fibers,including processing flexibility,wearing comfortability,outstanding lifetime and serviceability,low-cost and large-scale ***,we review the latest advances in functionalization and device fabrication of fiber materials toward applications in fiber-based wearable strain *** describe the approaches for preparing conductive fibers such as spinning,surface modification,and structural *** also introduce the fabrication and sensing mechanisms of state-of-the-art sensors and analyze their merits and *** applications toward motion detection,healthcare,man-machine interaction,future entertainment,and multifunctional sensing are summarized with typical *** finally critically analyze tough challenges and future remarks of fiber-based strain sensors,aiming to implement them in real applications.

关键词： Wearable strain sensor Fiber functionalization Wearability Flexible electronics Conductive materials

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Improving the performance of power system protection using wide area monitoring systems

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Journal of Modern Power Systems and Clean Energy 2016年第3期4卷 319-331页

作者： Arun G.PHADKE Peter WALL Lei DING Vladimir TERZIJA Virginia polytechnic Institute and State University 900 N.Glebe Rd.ArlingtonVA 22203USA Department of Electrical and Electronic Engineering University of ManchesterManchester M139PLUK School of Electrical Engineering Shandong University17923 Jingshi RoadJinan 250061Shandong ProvinceChina

Wide area monitoring(WAM) offers many opportunities to improve the performance of power system protection. This paper presents some of these opportunities and the motivation for their development. This methods include monitoring the suitability of relay characteristics,supervisory control of backup protection, more adaptive and intelligent system protection and the creation of novel system integrity protection scheme. The speed of response required for primary protection means that the role WAM in enhancing protection is limited to backup and system protection. The opportunities offered by WAM for enhancing protection are attractive because of the emerging challenges faced by the modern power system protection. The increasingly variable operating conditions of power systems are making it ever more difficult to select relay characteristics that will be a suitable compromise for all loading conditions and contingencies. The maloperation of relays has contributed to the inception and evolution of 70 % of blackouts,thus the supervision of the backup protection may prove a valuable tool for preventing or limiting the scale of blackouts. The increasing interconnection and complexity of modern power systems has made them more vulnerable to wide area disturbances and this has contributed to several recent blackouts. The proper management of these wide area disturbances is beyond the scope of most of the existing protection and new, adaptive system integrity protection schemes are needed to protect power system security.

关键词： Backup protection Blackouts Hidden failures Power system protection System integrity protection schemes Wide area monitoring Wide area protection

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Experimental and Numerical Study of Structural Identification Using Non-Linear Resonant Decay Method

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Sound & Vibration 2019年第3期53卷 75-95页

作者： Mehdi Sarmast Hamed Ghafari Jan R.Wright Kennesaw State University Department of Mechanical EngineeringMD 9075840 Polytechnic Lane MariettaGA 30060USA Malek Ashtar University of Technology Department of Aerospace EngineeringLavizanTehran 15875Iran School of Mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchester M139PLUK

One of the practical approaches in identifying structures is the non-linear resonant decay method which identifies a non-linear dynamic system utilizing a model based on linear modal space containing the underlying linear system and a small number of extra terms that exhibit the non-linear *** this paper,the method is illustrated in a simulated system and an experimental *** main objective of the non-linear resonant decay method is to identify the non-linear dynamic systems based on the use of a multi-shaker excitation using appropriated excitation which is obtained from the force appropriation *** experimental application of the method is indicated to provide suitable estimates of modal parameters for the identification of non-linear models of structures.

关键词： Non-linear modal identification non-linear dynamic system non-linear resonant decay method force appropriation approach

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An ultra-thin piezoelectric nanogenerator with breathable,superhydrophobic,and antibacterial properties for human motion monitoring

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Nano Research 2023年第9期16卷 11612-11620页

作者： Wei Fan Cong Zhang Yang Liu Shujuan Wang Kai Dong Yi Li Fan Wu Junhao Liang Chunlan Wang Yingying Zhang School of Textile Science and Engineering Key Laboratory of Functional Textile Material and Product of the Ministry of EducationXi’an Polytechnic UniversityXi’an 710048China Department of Chemistry Tsinghua UniversityBeijing 100084China School of Chemistry Xi’an Jiaotong UniversityXi’an 710049China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083China Department of Materials University of ManchesterManchesterM139PLUK

Piezoelectric nanogenerators(PENGs)are promising for harvesting renewable and abundant mechanical energy with high *** to now,published research studies have mainly focused on increasing the sensitivity and output of *** technical challenges in relation to practicability,comfort,and antibacterial performance,which are critically important for wearable applications,have not been well *** overcome the limitations,we developed an all-nanofiber PENG(ANF-PENG)with a sandwich structure,in which the middle poly(vinylidene fluoride-co-hexafluoropropylene(P(VDF-HFP))/ZnO electrospun nanofibers serve as the piezoelectric layer,and the above and below electrostatic direct-writing P(VDF-HFP)/ZnO nanofiber membranes with a 110 nm Ag layer on one side that was plated by vacuum coating technique serve as the electrode *** the ANF-PENG only has 91μm thick and does not need further encapsulating,it has a high air permeability of 24.97 mm/*** nanoparticles in ANF-PENG not only improve the piezoelectric output,but also have antibacterial function(over 98%).The multifunctional ANF-PENG demonstrates good sensitivity to human motion and can harvest mechanical energy,indicating great potential applications in flexible self-powered electronic wearables and body health monitoring.

关键词： piezoelectric nanogenerator breathability super-hydrophobicity antibacterial performance wearable electronics

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Gastric transposition as a valid surgical option for esophageal replacement in pediatric patients:experience from three Italian medical centers

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Gastroenterology Report 2017年第1期5卷 47-51,I0002页

作者： Rossella Angotti Francesco Molinaro Carmine Noviello Giovanni Cobellis Ascanio Martino Carmine Del Rossi Adrian Bianchi Mario Messina Division of Pediatric Surgery Department of MedicineSurgical and Neurological SciencesUniversity of SienaSienaItaly Pediatric Surgery Unit Academic Salesi Children HospitalMarche Polytechnic UniversityAnconaItaly Department of Pediatric Surgery University of ParmaParmaItaly Neonatal and Paediatric Reconstructive Surgery Royal Manchester Children’s HospitalManchesterUK

Background:Esophageal replacement in children is an option that is confined to very few situations including long-gap esophageal atresia and esophageal strictures unresponsive to other therapies(peptic or caustic ingestion).The purpose of our work was to describe the experience of gastric transposition in three Italian ***:This is a retrospective *** data were extrapolated from a prospective *** included all patients who had undergone gastric transposition in the last 15 ***:In the 15-year period,eight infants and children(3 males and 5 females)underwent gastric transposition for esophageal *** patients had long-gap esophageal atresia,and two had caustic esophageal *** were no deaths in the *** patients had an early postoperative complication:two had a self-limited salivary fistula at three weeks,and one(a patient with jejunostomy)had a jejunal perforation treated *** late complication,anastomotic stricture,was recorded that required two endoscopic *** median follow-up was 60 months(range:18–144 months).At final clinical follow-up,six patients had no eating problems,and two patients had some difficulties with eating(jejunostomy in situ),but they underwent logopedic therapy with improved *** patients had an increase in body weight and height ***:Our small study reports the clinical experience of three Italian centers in which gastric transposition was performed with excellent results,both in terms of surgical technique(simplicity,reproducibility,complication rate)and clinical follow-up(good oral feeding of young patients,normal social life and regular growth curves).

关键词： gastric transposition children esophageal atresia caustic ingestion

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Flexible unimodal strain sensors for human motion detection and differentiation

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npj Flexible Electronics 2022年第1期6卷 708-717页

作者： Lu Jin Zhenhong Li Zekun Liu Bethany Richardson Yan Zheng Lulu Xu Zhongda Chen Heng Zhai Hongdoo Kim Qingwen Song Pengfei Yue Sheng Quan Xie Kap Jin Kim Yi Li Department of Materials School of Natural SciencesThe University of ManchesterManchesterUK College of Textile Science and Engineering Xi’an Polytechnic UniversityXi’anChina School of Electronic and Electrical Engineering University of LeedsLeedsUK Department of Advanced Materials Engineering for Information and Electronics Kyung Hee UniversityYonginSouth Korea Institute of Rehabilitation Engineering Binzhou Medical UniversityYantaiChina

Multiple strain sensors are required to identify individual forces/stresses on human joints and recognize how they work together in order to determine the motion’s direction and ***,current sensors cannot detect and differentiate the individual forces/stresses and their contributions to the motion from the sensors’electrical *** address this critical issue,we propose a concept of unimodal tension,bend,shear,and twist strain sensors with piezoelectric poly L-lactic acid *** then construct an integrated unimodal sensor(i-US)using the unimodal sensors and prove that the i-US can detect and differentiate individual strain modes,such as tensioning,bending,shearing,and twisting in complex *** demonstrate the potential impact of unimodal sensors,we design a sleeve and a glove with the i-US that can capture wrist motions and finger ***,we expect unimodal strain sensors to provide a turning point in developing motion recognition and control systems.

关键词： motion strain shearing

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水溶性甲磺酸二苯甲酮季铵盐光敏剂的闪光光介研究

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化学学报 1990年第6期48卷 608-611页

作者：陈文祥 Allen N.S. 中国科学院感光化学研究所 Department of Chemistry Faculty of Science and Engineering Manchester Polytechnic Britain

用闪光光介研究的结果显示了水溶性甲磺酸二苯甲酮季铵盐(1)经由n-π~*激发导致三线态,与叔胺形成三线态激发复合物,同时再从叔胺夺取一个电子产生自由基阴离子.经过分子间抽氢产生ketyl自由基和烷基自由基.通过对氧、pH和胺电离势的影... 详细信息

用闪光光介研究的结果显示了水溶性甲磺酸二苯甲酮季铵盐(1)经由n-π~*激发导致三线态,与叔胺形成三线态激发复合物,同时再从叔胺夺取一个电子产生自由基阴离子.经过分子间抽氢产生ketyl自由基和烷基自由基.通过对氧、pH和胺电离势的影响的研究证实了上述机理.

关键词：光敏剂闪光光解季铵盐

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