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Optimizing membrane degassing with Hyflon AD 40L-modified polypropylene hollow fiber and pre-filling techniques

Chinese Journal of Chemical Engineering 2024年第11期75卷 181-190页

作者： Hongyu Chen Yinchao Jin Zhiying Lu Yangming Cheng Zhaohui Wang Zhaoliang Cui State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009China National Engineering Research Center for Special Separation Membrane Nanjing Tech UniversityNanjing 210009China Jiangsu Aikemo High-Technology Co. LtdSuzhou 215000China Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM) Nanjing Tech UniversityNanjing 210009China

This paper conducts a comparative analysis of the anti-wetting properties and degassing performance of both homemade and commercial ***,it introduces a unique approach to hydrophobic modification of high-flux *** study involved the utilization of Hyflon AD40L for multiple coatings on the surface of polypropylene(PP)hollow fiber *** variables,including modification solution concentration,temperature,coating duration,number of coating cycles,polymer type,and the choice and concentration of the pore-blocking agent,were systematically investigated to establish the optimal modification *** of the modified membrane and degassing experiments revealed significant ***,the contact angle increased from 95.5°to 113.1°,while the trans-membrane differential pressure surged from 10.7 kPa to 154.6 kPa,marking a remarkable 14.4-fold *** enhancement is attributed to the improved antiwetting capabilities of the modified *** the degassing experiments,the modified membrane-based module demonstrated an impressive 95.0%dissolved oxygen removal rate,with a corresponding mass transfer coefficient reaching 18.01×10^(-3)m·h^(-1).These results underscore the substantial potential of the Hyflon AD40 L/PP membrane for applications in membrane degassing.

关键词： Hyflon Polypropylene Anti-wetting modification Membrane degassing Pore-blocking agent

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High-energy fiber-shaped calcium-ion batteries enable integrated wearable electronics for human body monitoring

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Journal of Energy Chemistry 2024年第12期99卷 661-670页

作者： Yanyan Liu Bing He Jie Pu Minxing Yu Yifu Zhang Changgong Meng Qichong Zhang Jian Wu Lei Wei Zhenghui Pan State Key Laboratory of Fine Chemicals School of ChemistryDalian University of TechnologyDalian 116024LiaoningChina School of Materials Science and Engineering Tongji UniversityShanghai 201804China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073HunanChina

Electronic textiles hold the merits of high conformability with the human body and natural surrounding,possessing large market demand and wide application foreground in smart wearable and portable ***,their further application is largely hindered by the shortage of flexible and stable power sources with multifunctional ***,a free-standing ZnHCF@CF electrode(ZnHCF grown on carbon nanotube fiber)with good mechanical deformability and high electrochemical performance for aqueous fiber-shaped calcium ion battery(FCIB)is *** from the unique Ca^(2+)/H^(+)co-insertion mechanism,the ZnHCF@CF cathode can exhibit great ion storage capability within a broadened voltage *** pairing with a polyaniline(PANI)@CF anode,a ZnHCF@CF//PANI@CF FCIB is successfully fabricated,which exhibits a desirable volumetric energy density of 43.2mWh cm^(-3)and maintains superior electrochemical properties under different ***,the high-energy FCIB can be harmoniously integrated with a fiber-shaped strain sensor(FSS)to achieve real-time physiological monitoring on knees during long-running,exhibiting great promise for the practical application of electronic textiles.

关键词： Human body monitoring Wearable electronics Calcium-ion battery High volumetric energy density Strain sensors

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TGCN-P: A TCN-GCN Network With Weighted Graph Constructed by Pearson Correlation Coefficient for Human Motion Tracking

TGCN-P: A TCN-GCN Network With Weighted Graph Constructed by...

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2023 IEEE International Conference on Real-Time Computing and robotics, RCAR 2023

作者： Li, Xiaoyu Wang, Jingnan Huang, Binhua Liu, Chengliang Liu, Yiwen Zhang, Yupo Yi, Zhengkun Wu, Xinyu Chinese Academy of Sciences Guangdong Provincial Key Laboratory of Robotics and Intelligent System Shenzhen Institute of Advanced Technology Shenzhen518055 China Shenzhen Institute of Artificial Intelligence and Robotics for Society Siat Branch Shenzhen518055 China

ISBN: (纸本)9798350327182

Neural networks based on graph convolution are simple and effective network structures that have better performance in some fields compared to traditional convolutional networks. However, when graph convolution networks (GCN) are applied to other fields, how to transform data or features into graph edges is a challenge needed to be studied. In previous studies of non-Euclidean spatial data such as relationship studies, people achieve graph construction by indicating the connection or not of nodes with binary values. However, when graph network is applied to some multi-sensor data scenarios, especially human motion tracking tasks, binarization is obviously not the best solution for the weights of edges. In addition, relying on manual graph construction may ignore some cross-space sensor relationships, which makes the update information of nodes far away slower or unavailable. Therefore, we try to use Pearson correlation coefficient (PCC) as the estimation of node correlation, and construct a complete graph to enhance the connectivity of nodes, which achieve faster signal transmission at remote nodes. After combining it with the temporal convolutional network (TCN), we propose a new network structure TGCN-P. Experimentally, this approach is more effective compared to other baseline models. © 2023 IEEE.

关键词： Convolution

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Enhancement of photoelectric performance for CsPbI2Br solar cells by the synergistic effect of binary additives

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Journal of Materiomics 2023年第1期9卷 27-34页

作者： Qiulu Chen Like Lin Yanzhou Wang Zhe Gao Yujun Fu Qiming Liu Junshuai Li Deyan He School of Materials and Energy LONGi Institute of Future TechnologyLanzhou UniversityLanzhou730000China College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China

CsPbI_(2)Br-based perovskite solar cells(PSCs)have attracted much attention because of their excellent phase stability and appropriate ***,numerous defects of undercoordinated ions or mobile species are the sites of carrier nonradiative recombination,causing a low power conversion efficiency(PCE).In this work,NaCl and nitrogen-doped graphene quantum dots(N-GQDs)as binary additives are introduced into perovskite precursor to obtain high-quality photoactive *** ion(Cl^(-))is incorporated into perovskite due to the same physical and chemical properties as bromine(Br^(-)),that align the energy level of CsPbI_(2)Br,decrease the energy barrier between perovskite and P3HT to promote carrier transport and extraction,hence result in the reduced energy ***,because of its good conductivity,N-GQDs at grain boundaries can rapidly conduct photogenerated electrons to SnO_(2),suppressing carrier recombination at grain ***,the trap state density of the CsPbI_(2)Br film with binary additives is reduced,which could prolong the carrier lifetime,and improve surface *** a result,a PCE of 15.37%for CsPbI_(2)Br PSCs with binary additives is obtained,which shows~22.76%relative increment compare with the pristine ***,a simple and convenient optimization strategy of binary additives for PSCs is proposed in this work.

关键词： All-inorganic perovskite solar cells Synergistic effect Carrier transport Binary additives engineering

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Understanding and unveiling the electro-chemo-mechanical behavior in solid-state batteries

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SusMat 2024年第2期4卷 75-88页

作者： Yunlei Zhong Xia Zhang Yong Zhang Peng Jia Yuebin Xi Lixing Kang Zhenjiang Yu Key Laboratory of Multifunctional Nanomaterials and Smart Systems Division of Advanced MaterialsSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhouChina Institute of Applied Materials Helmholtz Centre Berlin for Materials and EnergyBerlinGermany School of Electronic and Information Engineering Changshu Institute of TechnologyChangshuJiangsuChina State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyJinanShandongChina

Solid-state batteries(SSBs)are attracting growing interest as long-lasting,thermally resilient,and high-safe energy storage *** an emerging area of battery chemistry,there are many issues with SSBs,including strongly reductive lithium anodes,oxidized cathodes(state of charge),the thermodynamic stability limits of solid-state electrolytes(SSEs),and the ubiquitous and critical *** this Review,we provided an overview of the main obstacles in the development of SSBs,such as the lithium anode|SSEs interface,the cathode|SSEs interface,lithium-ion transport in the SSEs,and the root origin of lithium intrusions,as well as the safety issues caused by the *** and overcoming these obstacles are crucial but also extremely challenging as the localized and buried nature of the intimate contact between electrode and SSEs makes direct detection *** reviewed advanced characterization techniques and discussed the complex ion/electron-transport mechanism that have been plaguing ***,we focused on studying and revealing the coupled electro-chemo-mechanical behavior occurring in the lithium anode,cathode,SSEs,and beyond.

关键词： advanced characterization techniques chemo-mechanical effects interface

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Shape-influenced non-reciprocal transport of magnetic skyrmions in nanoscale channel

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Chinese Physics B 2024年第7期33卷 605-611页

作者：陈杰尧罗佳胡更新王君林李冠祺陈振东陆显扬赵国平刘远吴竞徐永兵 School of Integrated Circuits Guangdong University of TechnologyGuangzhou 510006China School of Physics Engineering and TechnologyUniversity of YorkYork YO105DDUnited Kingdom College of Physics and Electronic Engineering Sichuan Normal UniversityChengdu 610068China Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China

Skyrmions, with their vortex-like structures and inherent topological protection, play a pivotal role in developing innovative low-power memory and logic devices. The efficient generation and control of skyrmions in geometrically confined systems are crucial for the development of skyrmion-based spintronic devices. In this study, we focus on investigating the non-reciprocal transport behavior of skyrmions and their interactions with boundaries of various shapes. The shape of the notch structure in the nanotrack significantly affects the dynamic behavior of magnetic skyrmions. Through micromagnetic simulation, the non-reciprocal transport properties of skyrmions in nanowires with different notch structures are investigated in this work.

关键词： skyrmion micromagnetic simulation racetrack memory

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Ultrafast near-infrared pyroelectric detector based on inhomogeneous plasmonic metasurface

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Light(Science & Applications) 2024年第11期13卷 2566-2575页

作者： Youyan Lu Liyun Liu Ruoqian Gao Ying Xiong Peiqing Sun Zhanghao Wu Kai Wu Tong Yu Kai Zhang Cheng Zhang Tarik Bourouina Xiaofeng Li Xiaoyi Liu School of Optoelectronic Science and Engineering&Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow UniversitySuzhou 215006China Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Education Ministry of China Soochow UniversitySuzhou 215006China Suzhou Institute of Biomedical Engineering and Technology of the Chinese Academy of Sciences Suzhou 215163China College of Intelligence Science and Technology National University of Defense TechnologyChangsha 410073China Laboratory of Science and Technology on Integrated Logistics Support National University of Defense TechnologyChangsha 410073China State Key Laboratory of Silicon and Advanced Semiconductor Materials Zhejiang UniversityHangzhou 310027China ESYCOM Lab UMR 9007 CNRSUniv Gustave Eiffel77454 Marne-la-ValléeFrance CINTRA IRL 3288 CNRS-NTUTHALESNanyang Technological UniversitySingapore 637553Singapore

Pyroelectric(PE)detection technologies have attracted extensive attention due to the cooling-free,bias-free,and broadband ***,the PE signals are generated by the continuous energy conversion processes from light,heat,to electricity,normally leading to very slow response ***,we design and fabricate a PE detector which shows extremely fast response in near-infrared(NIR)band by combining with the inhomogeneous plasmonic *** plasmonic effect dramatically accelerates the light-heat conversion process,unprecedentedly improving the NIR response speed by 2−4 orders of magnitude to 22μs,faster than any reported infrared(IR)PE *** also innovatively introduce the concept of time resolution into the field of PE detection,which represents the detector’s ability to distinguish multiple fast-moving ***,the spatially inhomogeneous design overcomes the traditional narrowband constraint of plasmonic systems and thus ensures a wideband response from visible to *** study provides a promising approach to develop next-generation IR PE detectors with ultrafast and broadband responses.

关键词： inhomogeneous plasmon overcome

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Nitrogen⁃doped 3D graphene⁃carbon nanotube network for efficient lithium storage

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无机化学学报 2024年第10期40卷 1840-1849页

作者： XIE Jie XU Hongnan LIAO Jianfeng CHEN Ruoyu SUN Lin JIN Zhong School of Materials Science and Engineering Changzhou UniversityChangzhouJiangsu 213164China Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province School of Chemistry and Chemical EngineeringYancheng Institute of TechnologyYanchengJiangsu 224051China Key Laboratory of Mesoscopic Chemistry Ministry of EducationState Key Laboratory of Coordination ChemistrySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China

A 3D nitrogen⁃doped graphene/multi⁃walled carbon nanotube(CS⁃GO⁃NCNT)crosslinked network mate⁃rial was successfully synthesized utilizing chitosan and melamine as carbon and nitrogen sources,concomitant with the incorporation of multi⁃wall carbon nanotubes and employing freeze drying *** material amalgamates the merits of 1D/2D hybrid carbon materials,wherein 1D carbon nanotubes confer robustness and expedited elec⁃tron transport pathways,while 2D graphene sheets facilitate rapid ion ***,the introduction of nitrogen heteroatoms serves to furnish additional active sites for lithium *** served as an anode material for lithium⁃ion batteries,the CS⁃GO⁃NCNT electrode delivered a reversible capacity surpassing 500 mAh·g^(-1),mark⁃edly outperforming commercial graphite *** after 300 cycles at a high current density of 1 A·g^(-1),it remained a reversible capacity of up to 268 mAh·g^(-1).

关键词： graphene carbon nanotube hybrid material anode lithium⁃ion battery

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A Variable-speed Silent Speech Recognition Method based on Surface Electromyography Signal 8

A Variable-speed Silent Speech Recognition Method based on S...

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8th IEEE International Conference on advanced robotics and Mechatronics, ICARM 2023

作者： Liang, Sui Xu, Yin Yuan, Zhaohua Sun, Lining Li, Weida Zhang, Hongmiao School of Mechanical and Electric Engineering Soochow University Suzhou215021 China Zoomlion Heavy Industry Science and Technology Co. Ltd Suzhou215021 China Soochow University Jiangsu Provincial Key Laboratory of Advanced Robotics Suzhou215021 China

ISBN: (纸本)9798350300178

In the practical implementation of silent speech recognition based on surface electromyography (sEMG) signal, the change in the subjects' speech speed will affect the recognition performance. To mitigate this effect, a silent speech recognition method based on dynamic time warping (DTW) algorithm is proposed in this paper. Specifically, the facial sEMG signals of 22 Chinese words are collected, the energy threshold method is used to detect the active segment, the root mean square feature is extracted, and finally the DTW algorithm is used for recognition. The experimental results show that the method is robust to silent speech recognition tasks with different speech speeds. The average accuracy of using the DTW algorithm to classify uniform-speed words is 94.55%, and that of variable-speed words is 71.82%. In addition, the proposed method is suitable for few samples learning, which means it can quickly adapt to new tasks and individuals. These findings provide a novel way for the practical application of sEMG based silent speech recognition. © 2023 IEEE.

关键词： Speech recognition

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Neural Dynamics for Cooperative Motion Control of Omnidirectional Mobile Manipulators in the Presence of Noises: A Distributed Approach

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1605-1620页

作者： Yufeng Lian Xingtian Xiao Jiliang Zhang Long Jin Junzhi Yu Zhongbo Sun the Department of Control Engineering Changchun University of TechnologyChangchun 130012China IEEE the College of Information Science and Engineering Northeastern UniversityShenyang 110819 the National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China the School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China the State Key Laboratory for Turbulence and Complex Systems Department of Advanced Manufacturing and RoboticsCollege of EngineeringPeking UniversityBeijing 100871China

This paper presents a distributed scheme with limited communications, aiming to achieve cooperative motion control for multiple omnidirectional mobile manipulators(MOMMs).The proposed scheme extends the existing single-agent motion control to cater to scenarios involving the cooperative operation of MOMMs. Specifically, squeeze-free cooperative load transportation is achieved for the end-effectors of MOMMs by incorporating cooperative repetitive motion planning(CRMP), while guiding each individual to desired poses. Then, the distributed scheme is formulated as a time-varying quadratic programming(QP) and solved online utilizing a noise-tolerant zeroing neural network(NTZNN). Theoretical analysis shows that the NTZNN model converges globally to the optimal solution of QP in the presence of noise. Finally, the effectiveness of the control design is demonstrated by numerical simulations and physical platform experiments.

关键词： Cooperative motion control noise-tolerant zeroing neural network(NTZNN) omnidirectional mobile manipulator(OMM) repetitive motion planning

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