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SSRN 2023年

作者： Li, Xiaoyu Chen, Fengyi Lin, Shaohong Huang, Zhijia Tian, Yong Tian, Jindong State Key Laboratory of Radio Frequency Heterogeneous Integration Shenzhen University Shenzhen518060 China National Engineering Laboratory for Electric Vehicles School of Mechanical Engineering Beijing Institute of Technology Beijing100081 China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China

Battery capacity and internal resistance are two significant parameters which can reflect the battery internal state. Generally, disassembly process of battery module is inevitable for carrying out parameter identification for cells of battery module. However, the disassembly procession of the battery module is complicated, and the battery reassembly efficiency is lower than the average level, which also leads to the high economic cost of parameter identification. In this paper, a battery parameter identification method without disassembling the battery module is developed based on a multi-physical measurement system. Firstly, a multi-physics electrical-thermal-spatial measurement system is constructed to measure the physical parameters of the battery module during charging and discharging. Then, the electrical characteristic model and the thermal characteristic model are developed to identified the capacity and internal resistance of each cell within the module. According to the experiments, it shows that the relative errors of parameter identification for battery capacity and internal resistance are both within 9%. This method will help improve the efficiency of retired battery screening and recombination, as well as the reliability and safety of battery systems. © 2023, The Authors. All rights reserved.

关键词： Data fusion

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Customizable Silk Fibroin-Based Hydrogel Fibrous Scaffold for On-Demand Multifaceted Tissue Repair

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ACS nano 2025年第22期19卷 2025 May 31页

作者： Xi He Ruideng Wang Xuezhe Liu Renpeng Peng Bikun Zhou Li Wang Xinbo Wei Shuang Wang Jinwu Bai Qian Feng Fang Zhou Haifeng Liu Yubo Fan Key Laboratory of Biomechanics and Mechanobiology (Beihang University) Ministry of Education Key Laboratory of Innovation and Transformation of Advanced Medical Devices Ministry of Industry and Information Technology National Medical Innovation Platform for Industry-Education Integration in Advanced Medical Devices (Interdiscipline of Medicine and Engineering) School of Biological Science and Medical Engineering Beihang University Beijing 100191 China. Department of Orthopaedics Engineering Research Center of Bone and Joint Precision Medicine Peking University Third Hospital Beijing 100083 China. Key Laboratory of Biorheological Science and Technology Ministry of Education Collage of Bioengineering Chongqing University Chongqing 400044 China. Department of Orthopedic Surgery Tongji Hospital Huazhong University of Science and Technology Wuhan 430073 China. Nanjing Stomatological Hospital Affiliated Hospital of Medical School Nanjing University 30 Zhongyang Road Nanjing 210008 Jiangsu P. R. China.

Hydrogel scaffolds represent an attractive tool for tissue repair. However, targeted tissue repair requires a specific shape and biological function design, and most natural-protein-based hydrogel scaffolds are predominantly confined to specific tissue repair applications. Here, we developed a versatile structural biomimetic natural protein platform through synergistic electrospinning, photopolymerization, and metal-coordination strategies. By integrating methacrylated silk fibroin (SFMA) with acrylated bisphosphonates (AcBP), we developed a dynamically functionalizable matrix that enables (1) customizable shape control via tunable electrospinning collectors and (2) on-demand biological function customization through metal-ion chelation. As a proof of concept, we demonstrate this platform's scenario-specific therapeutic efficacy: (i) Mg-functionalized membranes (S-LB-Mg) that orchestrate angiogenic-osteogenic coupling in critical-sized calvarial defects, (ii) Ag-integrated dressing (S-LB-Ag) enabling bacterial eradication via a nonantibiotic mechanism and accelerating infected wound closure, and (iii) Zn-loaded conduits (S-LB-Zn) that drive macrophage M2 polarization to enhance peripheral nerve regeneration. This naturally derived protein-based platform overcomes the potential side effects associated with clinical bioactive factor/antibiotic composite scaffolds, offering a simple and customizable solution for the repair and regeneration of diverse tissues in a cost-effective yet highly effective manner. Overall, our strategy provides an alternative perspective for constructing protein-derived hydrogel microfibers with customizable functions and shapes for tissue repair applications.

关键词： bone regeneration customizable functions and shapes hydrogel fibrous scaffolds infection wound healing nerve repair

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Resistive switching performance improvement of In GaZnO-based memory device by nitrogen plasma treatment

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Journal of Materials Science & technology 2020年第14期47卷 1-6页

作者： Li Zhang Zhong Xu Jia Han Lei Liu Cong Ye Yi Zhou Wen Xiong Yanxin Liu Gang He Faculty of Physics and Electronic Science Hubei UniversityHubei Key Laboratory of Ferro-&Piezoelectric Materials and DevicesHubei Key Laboratory of Applied MathematicsWuhan430062China School of Physics and Materials Science Radiation Detection Materials&Device LabAnhui UniversityHefei230039China School of Microelectronics Tianjin Key Laboratory of Imaging and Sensing Microelectronic TechnologyTianjin UniversityTianjin300072China

With the demand of flat panel display development,utilizing the non-volatile memory devices based on indium-gallium-zinc-oxide(IGZO)film may be integrated with IGZO thin film transistors(TFTs)to accomplish system-on-panel *** this work,1×1μm^2 via hole structure IGZO based memory device was fabricated and the resistive switching(RS)behavior was *** inserting a nitrogen doping layer IGZO:N by plasma treatment in Pt/IGZO/Ti N device,highly improved RS performance including lower forming voltage,remarkable uniformity,large memory window of 102,retention property of 10^4 s at 125℃,excellent pulse endurance of 10^7 cycles were *** X-ray photoelectron spectroscopy analysis indicates that plasma doping method can evenly dope nitrogen and induce more non-lattice oxygen in the IGZO *** is deduced that the N atoms of the inserting layer can influence the random formation of oxygen vacancy type conducting filaments,which results in more stable and uniform performance.

关键词： Memory device Resistive switching Plasma treatment Indium-gallium-zinc-oxide Memristor

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Uniform, fast, and reliable CMOS compatible resistive switching memory

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Journal of Semiconductors 2022年第5期43卷 109-115页

作者： Yunxia Hao Ying Zhang Zuheng Wu Xumeng Zhang Tuo Shi Yongzhou Wang Jiaxue Zhu Rui Wang Yan Wang Qi Liu Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China School of Integrated Circuits Anhui UniversityHefei 230601China Frontier Institute of Chip and System Fudan UniversityShanghai 200433China

Resistive switching random access memory(RRAM) is considered as one of the potential candidates for next-generation memory. However, obtaining an RRAM device with comprehensively excellent performance, such as high retention and endurance, low variations, as well as CMOS compatibility, etc., is still an open question. In this work, we introduce an insert TaO_(x) layer into HfO_(x)-based RRAM to optimize the device performance. Attributing to robust filament formed in the TaO_(x) layer by a forming operation, the local-field and thermal enhanced effect and interface modulation has been implemented simultaneously. Consequently, the RRAM device features large windows(> 10^(3)), fast switching speed(-10 ns), steady retention(> 72h), high endurance(> 10^(8) cycles), and excellent uniformity of both cycle-to-cycle and device-to-device. These results indicate that inserting the TaO_(x) layer can significantly improve HfO_(x)-based device performance, providing a constructive approach for the practical application of RRAM.

关键词： uniformity resistance switching field enhance layer thermal enhance layer and interface modulation

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Low-thermal-budget Au-free ohmic contact to an ultrathin barrier AlGaN/GaN heterostructure utilizing a micro-patterned ohmic recess

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Journal of Semiconductors 2021年第9期42卷 61-65页

作者： Wen Shi Sen Huang Xinhua Wang Qimeng Jiang Yixu Yao Lan Bi Yuchen Li Kexin Deng Jie Fan Haibo Yin Ke Wei Yankui Li Jingyuan Shi Haojie Jiang Junfeng Li Xinyu Liu Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Institute of Microelectronics University of Chinese Academy of SciencesBeijing 100049China

A pre-ohmic micro-patterned recess process,is utilized to fabricate Ti/Al/Ti/TiN ohmic contact to an ultrathin-barrier(UTB)AlGaN/GaN heterostructure,featuring a significantly reduced ohmic contact resistivity of 0.56Ω·mm at an alloy temperature of 550℃.The sheet resistances increase with the temperature following a power law with the index of +2.58,while the specific contact resistivity decreases with the *** contact mechanism can be well described by thermionic field emission(TFE).The extracted Schottky barrier height and electron concentration are 0.31 eV and 5.52×10^(18) cm^(−3),which suggests an intimate contact between ohmic metal and the UTB-AlGaN as well as GaN buffer.A good correlation between ohmic transfer length and the micro-pattern size is revealed,though in-depth investigation is needed.A preliminary CMOS-process-compatible metal-insulator-semiconductor high-mobility transistor(MIS-HEMT)was fabricated with the proposed Au-free ohmic contact technique.

关键词： ultrathin-barrier AlGaN/GaN heterostructure low thermal budget Au-free ohmic contact micro-patterned ohmic recess MIS-HEMTs transfer length

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Highly Sensitive Humidity Sensor Based on Strontium-Doped Lanthanum Ferrite Nanofibers

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SSRN 2022年

作者： Zhang, Ziyi Li, Fangxin Zhang, Yuejun Zheng, Yangong Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo315211 China Key Laboratory of Microelectronic Devices & Integrated Technology Institute of Microelectronics Chinese Academy of Sciences Beijing100029 China

Humidity sensors are the most widely applied sensors. Although some highly sensitive humidity sensors have been explored, devices that can accurately detect low humidity still require development. Improving the chemisorption of water molecules by surface regulation is an effective way to enhance a humidity sensitivity of a device. In this study, we used electrospinning to prepare a series of lanthanum ferrite samples doped with different levels of strontium. Although heavy strontium doping caused amorphous crystallinity in the samples, light doping produced samples with nanofibrous morphology and good crystallinity. When the surface atomic ratio between strontium and lanthanum was approximately 0.2, there was a 6×104 times change in the resistance of the sensor to 90% relative humidity, and the response was 6.76 for 4% relative humidity. Negligible hysteresis, excellent stability, and linear response demonstrate the advantages of the strontium-doped lanthanum ferrite nanofibers regarding resistance measurements. Strontium doping decreased the adsorption energy and increased the charge transfer by redistributing the valence electrons and adjusting the electric field on the surface of lanthanum ferrite. This study provides a new perspective for enhancing the sensitivity of humidity sensors via surface regulation. © 2022, The Authors. All rights reserved.

关键词： Electrospinning

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Optimizing Flash Memory Towards Storage-Class Memory (SCM) Applications

Optimizing Flash Memory Towards Storage-Class Memory (SCM) A...

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International Conference on Solid-State and Integrated Circuit technology

作者： Xinyi Guo Yang Feng Jing Liu Junyu Zhang Xuepeng Zhan Jixuan Wu Jiezhi Chen School of Information Science and Engineering Shandong University Qingdao P. R. China Key Laboratory of Microelectronic Devices and Integrated Technology Institute of Microelectronics of Chinese Academy of Sciences Beijing P. R. China Neumem Co. Ltd Hefei P. R. China

ISBN: (数字)9798350361834

ISBN: (纸本)9798350361841

Aiming at the applications of flash memories as storage-class memory (SCM), we did a comprehensive study on the operation schemes of flash cells for fast Program/Erase (PE) cycling, high endurance and read stabilities. By adopting the channel-hot-electron injection (CHEI) and hot-hole injection (HHI) as PE schemes, as large as $\sim 5\mathrm{V}$ memory window (MW) can be realized and the endurance can reach $\sim 10^{6}$ PE cycles. As for 1-bit operation with sub-1V MW, the speed can be as fast as $\sim 10\text{ns}$ and the endurance is over 10 9 PE cycles. Moreover, with the incremental-step-pulse-program (ISPP) method, 64 states (6-bit/cell) with high linearity and robust stabilities could be obtained. Our results demonstrate that there is a large flexibility to optimize flash cells as SCM, especially for the read-intensive applications and energy-efficient computing-in-memory (CiM) architectures.

关键词： Integrated circuit technology Robust stability Linearity Computer architecture Hot carriers Reliability engineering Circuit stability Flash memories Integrated circuit reliability Optimization

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Highly Sensitive Humidity Sensor Based on Strontium-Doped Lanthanum Ferrite Nanofibers

SSRN

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SSRN 2022年

Humidity sensors are the most widely applied sensors. Although some highly sensitive humidity sensors have been explored, devices that can accurately detect low humidity are still required. Improving the chemisorption of water molecules by surface regulation is an effective way to enhance the humidity sensitivity. In this study, a series of lanthanum ferrite samples doped with different concentrations of strontium was prepared by electrospinning. For the sample with surface atomic ratio between strontium and lanthanum was approximately 0.2, there was a 6´10 4 times change in the resistance of the sensor to 90% relative humidity, and the response was 6.76 for 4% relative humidity. Negligible hysteresis, excellent stability, and linear response demonstrate the advantages of the strontium-doped lanthanum ferrite nanofibers. The sensing mechanism was discussed by measuring the change of band gap and work function of samples with different concentrations of strontium doping. Furthermore, suitable doping also decreased the adsorption energy and increased the charge transfer during the adsorption of water molecules on the surface of lanthanum ferrite based on the calculations. This study provides a new perspective for enhancing the sensitivity of humidity sensors via surface regulation. © 2022, The Authors. All rights reserved.

关键词： Electrospinning

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Applications of MXenes in human-like sensors and actuators

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Nano Research 2023年第4期16卷 5767-5795页

作者： Jinbo Pang Songang Peng Chongyang Hou Xiao Wang Ting Wang Yu Cao Weijia Zhou Ding Sun Kai Wang Mark H.Rümmeli Gianaurelio Cuniberti Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongUniversity of JinanJinan 250022China Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresden 01069Germany Center for Advancing Electronics Dresden Technische Universität DresdenDresden 01069Germany Dresden Center for Computational Materials Science Technische Universität DresdenDresden 01062Germany Dresden Center for Intelligent Materials(GCL DCIM) Technische Universität DresdenDresden 01062Germany High-Frequency High-Voltage Device and Integrated Circuits R&D Center Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Microelectronic Devices&Integrated Technology Institute of MicroelectronicsChinese Academy of SciencesBeijing 100029China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan 250353China School of Bioengineering Qilu University of TechnologyShandong Academy of ScienceJinan 250353China Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology(Ministry of Education) Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Northeast Electric Power UniversityJilin 132012China School of Electrical Engineering Weihai Innovation Research InstituteQingdao UniversityQingdao 266000China School of Electrical and Computer Engineering Jilin Jianzhu UniversityChangchun 130118China Institute for Complex Materials Leibniz Institute for Solid State and Materials Research Dresden(IFW Dresden)20 Helmholtz StrasseDresden 01069Germany College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key L

Human beings perceive the world through the senses of sight,hearing,smell,taste,touch,space,and *** first five senses are prerequisites for people to *** sensing organs upload information to the nervous systems,including the brain,for interpreting the surrounding ***,the brain sends commands to muscles reflexively to react to stimuli,including light,gas,chemicals,sound,and ***,as an emerging two-dimensional material,has been intensively adopted in the applications of various sensors and *** this review,we update the sensors to mimic five primary senses and actuators for stimulating muscles,which employ MXene-based film,membrane,and composite with other functional ***,a brief introduction is delivered for the structure,properties,and synthesis methods of ***,we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas,gas sensors,chemical biosensors,acoustic devices,and tactile sensors for electronic ***,the actuators of MXene-based composite are ***,future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot,which may induce prospects in accompanying healthcare and biomedical engineering applications.

关键词： MXenes sensors actuators gas sensors biosensors tactile sensors sound sensors artificial retina

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Enhanced Cycling Stability of F-Doped Na4Fe3(PO4)2P2O7 Cathode Material for Sodium-Ion Batteries

SSRN

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SSRN 2024年

作者： Cao, Yanyan Ma, Yongtao Yang, Zihao Xie, Xiangyang Huang, Wei Liu, Dongzhu Wang, Jiangtao Qin, Jian Li, Ming Wang, Jingjing Li, Wenbin Su, Yaqiong Li, Xifei Institute of Advanced Electrochemical Energy School of Materials Science and Engineering Xi'an University of Technology Shaanxi Xi’an710048 China for Industry-Education Integration of Energy Storage Technology Xi’an Jiaotong University Xi’an710049 China Shaanxi International Joint Research Center of Surface Technology for Energy Storage Materials China Xi’an Key Laboratory of New Energy Materials and Devices China

Efficient and durable cathode materials are crucial for improving the performance and reliability of sodium ion batteries (SIBs) in various energy storage applications. This study explores the complex mechanism of enhancing electrochemical performance of F-doped Na4Fe3(PO4)2P2O7 (NFPP) by combining density functional theory (DFT) and experiments, with a focus on improving electronic conductivity and cycling stability. Detailed explanation was given on the reasons why Na2 cannot be extracted due to its large coordination number and unique structure. The migration of sodium ions in NFPP is 1D and 2D, rather than the commonly believed 3D, mainly because the c-direction channel is blocked by Na2 that cannot be released. The NFPP and NFPP/F electrodes initial capacity at 1C was 95.7 and 105.9 mAh g−1, and remained at the initial capacity (70.2%) and (86.2%) after 1000 cycles. The results reveal that F doping can greatly improve the cyclic stability of NFPP materials, which is attributed to the change in the twisting mode of two P2O7 dimers during sodium extraction/insertion process. These findings contribute to ongoing research efforts aimed at developing high-performance NFPP sodium ion batteries, thus facilitating the practical application in sustainable energy storage systems. © 2024, The Authors. All rights reserved.

关键词： Cathodes

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