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Nano Research 2023年第7期16卷 10493-10499页

作者： Tong Li Zhenzong Xu Ben Bin Xu Zhanhu Guo Yunhong Jiang Xuehua Zhang Maryam Bayati Terence Xiaoteng Liu Yan-Hua Liu School of Optoelectronic Science and Engineering Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Education Ministry of ChinaSoochow UniversitySuzhou 215006China Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon TyneNE18STUK Hub for Biotechnology in the Built Environment Department of Applied SciencesNorthumbria University at NewcastleNE18STUK Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Piezoresistive composite elastomers have shown great potentials for wearable and flexible electronic applications due to their high sensitivity,excellent frequency response,and easy signal detection.A composition membrane sensor with an interlocked structure has been developed and demonstrated outstanding pressure sensitivity,fast response time,and low temperature drift *** with a flexible MXene-based flat sensor(Ti_(3)C_(2)),the interlocked sensor exhibits a significantly improved pressure sensitivity of two magnitudes higher(21.04 kPa^(-1)),a fast reaction speed of 31 ms,and an excellent cycle life of 5000 test *** viability of sensor in responding to various external stimuli with high deformation capacity has been confirmed by calculating the force distribution of a polydimethylsiloxane(PDMS)film model with a microlens structure using the solid mechanics module in *** conventional process,we utilized three-dimensional(3D)laser-direct writing lithography equipment to directly transform high-precision 3D data into a micro-nano structure morphology through variable exposure doses,which reduces the hot melting ***,the flexible pressure device is capable of detecting and distinguishing signals ranging from finger movements to human pulses,even for speech *** simple,convenient,and large-format lithographic method offers new opportunities for developing novel human-computer interaction devices.

关键词： three-dimensional(3D)lithography microlens array flexible electronics pizoresistive pressure sensors MXene

High magnetic field helicon plasma discharge for plasma-wall interaction studies

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Science China(Physics,Mechanics & Astronomy) 2016年第4期59卷 88-89页

作者： TianYuan Huang ChengGang Jin Jun Yu XueMei Wu LanJian Zhuge College of Physics Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow University key lab of advanced Optical manufacturing Technologies of Jiangsu province & key lab of Modern Optical Technologies of Education Ministry of China Soochow University Analysis and Testing Center Soochow University

Dear Editors,Plasma-Wall Interactions(PWIs)are important for the development of magnetic confinement fusion devices such as International Thermonuclear Experimental Reactor(ITER),as they can release impurities into th... 详细信息

关键词：放电等离子体相互作用螺旋波等离子体高磁场国际热核实验反应堆核聚变装置 ITER 磁约束

Milling Force Model for Aviation Aluminum Alloy: Academic Insight and Perspective Analysis

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Chinese Journal of Mechanical Engineering 2021年第1期34卷 54-88页

作者： Zhenjing Duan Changhe Li Wenfeng Ding Yanbin Zhang Min Yang Teng Gao Huajun Cao Xuefeng Xu Dazhong Wang Cong Mao Hao Nan Li Gupta Munish Kumar Zafar Said Sujan Debnath Muhammad Jamil Hafiz Muhammad Ali School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China State key laboratory Mechanical Transmiss Chongqing UniversityChongqing 400044China key laboratory of Special Purpose Equipment and advanced Processing technology Ministry of Educati on&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310032China School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China College of Automotive and Mechanical Engineering Changsha University of Science and TechnologyChangsha 410114China School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China key lab High Efficiency and Clean Mech Manufacture Shandong UniversityJinan 250100China College of Engineering University of Sharjah27272 SharjahUnited Arab Emirates Mechanical Engineering Department Curtin University98009 MiriMalaysia Mecha nical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Aluminum alloy is the main structural material of aircraft,launch vehicle,spaceship,and space station and is processed by ***,tool wear and vibration are the bottlenecks in the milling process of aviation aluminum *** machining accuracy and surface quality of aluminum alloy milling depend on the cutting parameters,material mechanical properties,machine tools,and other *** particular,milling force is the crucial factor to determine material removal and workpiece surface ***,establishing the prediction model of milling force is important and difficult because milling force is the result of multiparameter coupling of process *** research progress of cutting force model is reviewed from three modeling methods:empirical model,finite element simulation,and instantaneous milling force *** problems of cutting force modeling are also *** view of these problems,the future work direction is proposed in the following four aspects:(1)high-speed milling is adopted for the thin-walled structure of large aviation with large cutting depth,which easily produces high residual *** residual stress should be analyzed under this particular condition.(2)Multiple factors(e.g.,eccentric swing milling parameters,lubrication conditions,tools,tool and workpiece deformation,and size effect)should be considered comprehensively when modeling instantaneous milling forces,especially for micro milling and complex surface machining.(3)The database of milling force model,including the corresponding workpiece materials,working condition,cutting tools(geometric figures and coatings),and other parameters,should be established.(4)The effect of chatter on the prediction accuracy of milling force cannot be ignored in thin-walled workpiece milling.(5)The cutting force of aviation aluminum alloy milling under the condition of minimum quantity lubrication(mql)and nanofluid mql should be predicted.

关键词： Milling Aluminum alloy Force model Empirical model Finite element model Instantaneous milling force model

Microstructuring Conductive Electrospun Mats for Enhanced Electro‑active Biofilm Growth and High‑Performance Bioelectrocatalysis

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advanced Fiber Materials 2023年第5期5卷 1699-1711页

作者： Min Li Hao Lu Jiadong Hu Xuemei Xiang Yanling Zheng Wenhu Gao Wei Sun Wei Wang Zhisong Lu Yan Qiao Institute for Clean Energy and advanced Materials School of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China Sino‑Singapore Joint laboratory of Materials and Technologies for Proactive Health Monitoring School of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China Experimental Center for Virtual Simulation of Sports and Health Southwest UniversityChongqing 400715People’s Republic of China State key laboratory of advanced technology for Materials Synthesis and Processing Wuhan University TechnologyWuhan 430070People’s Republic of China Hubei Longzhong lab Xiangyang 441000People’s Republic of China key laboratory of Laser technology and Optoelectronic Functional Materials of Hainan province College of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158People’s Republic of China Singapore Institute of manufacturing technology Singapore 138669Singapore

Electrospun materials have attracted considerable attention in microbial fuel cells(MFC)owing to their porous structures,which facilitate the growth of electro-active biofilms(EABs).However,the impact of fiber diameter-controlled porous architectures on EAB growth and MFC performance has not been extensively ***,a highly conductive polypyrrole-modified electrospun polyacrylonitrile(PAN)mat was prepared as an electrode material for Shewanella putrefaciens CN32-based *** dominant pore size of the corresponding mat increases from 1 to around 20μm as the fiber diameter increases from 720 to 3770 *** variation affects the adhesion and growth behaviors of electrochemically active bacteria on the mat-based *** electrodes with poresranging from 2 to 10μm allow bacterial penetration into the interior,leading to significant biofilm loading and effective ***,the tight lamination of the electrospun fibers restricts bacterial growth in the deep interior *** developed a friction-induced triboelectric expanding approach to rendering the mats with layered structures to overcome this *** inter-layer spaces of the expanded conductive mat can facilitate bacterial loading from both sides of each layer and serve as channels to accelerate the catalysis of organic ***,the expanded conductive mat with appropriate pore sizes delivers superior bioelectrocatalytic performance in MFCs and dye *** on the findings,a mechanism for the porous structure-controlled EAB formation and bioelectrocatalytic performance was *** work may provide helpful guidance and insights for designing microfiber-based electrodes for microbial fuel cells.

关键词： Electrospun mat Porous structure Bioelectrocatalysis Microbial fuel cells Polypyrrole

Tuning the reaction path of CO_(2) electroreduction reaction on indium single-atom catalyst:Insights into the active sites

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Nano Research 2022年第5期15卷 4014-4022页

作者： Jiawei Zhang Gangming Zeng Lanlan Chen Wenchuan Lai Yuliang Yuan Yangfan Lu Chao Ma Wenhua Zhang Hongwen Huang College of Materials Science and Engineering Advanced Catalytic Engineer Research Center of the Ministry of EducationHunan UniversityChangsha 410082China Hefei National laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of SciencesDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China State key lab of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

Modulating the local coordination structure of metal single-atom catalysts(SACs)is extensively employed to tune the catalytic activity,but rarely involved in regulating the reaction pathway which fundamentally determines the product ***,we report that the product selectivity of electrochemical CO_(2)reduction(CO_(2)RR)on the single-atom indium-NxC4-x(1≤x≤4)catalysts could be tuned from formate to CO by varying the carbon and nitrogen occupations in the first coordination ***,the optimal In SAC showed great promise for CO production with the maximum Faradic efficiency of 97%,greatly different from the reported In-based catalysts where the formate is the dominant *** experimental verifications and theoretical simulations reveal that the selectivity switch from formate to CO on In SACs originates from active sites shift from indium center to the indium-adjacent carbon atom,where the indium site favors formate formation and the indium-adjacent carbon site prefers the CO *** present work suggests the active sites in metal SACs may shift from the widely accepted metal center to surrounding carbon atoms,thereby offering a new implication to revisit the active sites for metal SACs.

关键词： CO_(2)reduction single atom catalysts coordination structure product selectivity active sites shift

Transition metal on topological chiral semimetal PdGa with tailored hydrogen adsorption and reduction

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npj Computational Materials 2021年第1期7卷 1933-1940页

作者： Qun Yang Guowei Li Yudi Zhang Jian Liu Jiancun Rao Thomas Heine Claudia Felser Yan Sun Max Planck Institute for Chemical Physics of Solids 01187 DresdenGermany CAS key laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application TechnologyNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences 19 A Yuquan RdShijingshan DistrictBeijing 100049China AIM lab Maryland NanoCenterUniversity of MarylandCollege ParkMD 20742USA Faculty of Chemistry and Food Chemistry Technische Universität Dresden01069 DresdenGermany

The difficulties in designing high-performance hydrogen evolution reaction(HER)catalysts lie in the manipulation of adsorption behaviors of transition metals(TMs).Topological chiral semimetals with super-long Fermi arc surface states provide an ideal platform for engineering the catalytic performance of TMs through the metal-support *** found the adsorption trends of TMs can be modified significantly when deposited at the surface of the PdGa chiral *** electron transfer from the TMs to the surface states of the PdGa reshapes the d band structure of TMs and weakens the hydrogen intermediate ***,W/PdGa is expected to be a good HER catalyst with close to zero Gibbs free ***,we found a Pt-like exchange current density and tumover frequency when depositing W atoms at the PdGa nanostructures *** findings provide a way to develop high-efficient electrocatalysts by the interplay between topological surface states and metal-support interaction.

关键词： interaction surface adsorption

Study of Cracking Mechanism and Wear Resistance in Laser Cladding Coating of Ni-based Alloy

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Chinese Journal of Mechanical Engineering 2021年第5期34卷 259-272页

作者： Zhenglei Yu Lunxiang Li Deqiang Zhang Guangfeng Shi Guang Yang Zezhou Xu Zhihui Zhang key lab of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China State key laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China College of Mechanical and Electric Engineering Changchun University of Science and TechnologyChangchun 130022China College of Mechanical Engineering and Automation Liaoning University of TechnologyJinzhou 121001China key laboratory of Fundamental Science for National Defense of Aeronautical Digital manufacturing Process Shenyang Aerospace UniversityShenyang 110136China

Nickel-based alloy coatings were widely used for the remanufacturing of dies and moulds by laser cladding,but the crack sensitivity would be increase due to the higher strength and hardness,which reduced the wear resistance of Ni-based *** this paper,Ni-based coatings with the addition of a plastic phase(an austenitic stainless net)were prepared using laser cladding technology,and the CeO_(2)was added in cladding *** cracking mechanism,microhardness,microstructure,phase composition,and wear properties were *** relationship between thermal stress and the elastic and plastic fracture had been developed from the standpoint of fracture mechan-ics and thermal elastic fracture *** fracture criterion of the nickel-based coating was obtained,and the study has shown that the crack sensitivity could be reduced by decreasing the thermal expansion coefficientΔα.Thus,a new method was proposed,which the stainless steel nets were prefabricated on the *** was found that the number of cracks reduced significantly with the addition of stainless steel *** the stainless steel net with 14 mesh was added in Ni-based coatings,the average microhardness of nickel composite coating was 565 HV_(0.2),which was 2.6 times higher than that of the 45 steel *** the rare earth oxide 4 wt.%CeO_(2)and stainless steel net were added in the Ni-based coating reducing the microhardness(the average microhardness is 425 HV_(0.2)),the wear resistance of it improved *** wear volume of Ni-based composite coating was 0.56×10^(−5) mm^(3)·N^(−1)·m^(−1),which was 85.1%lower than that of 45 *** experiment results have shown that the Nickel-based composite coating is equipped with low crack sensitivity and high abrasive resistance with austenitic stainless net and the rare earth oxide 4 wt.%*** research offers an efficient solution to produce components with low crack susceptibility and high wear-resistance coatings fabricated

关键词： Laser cladding Wear resistance Crack sensitivity Stainless steel net Rare earth oxide

Establishment of a Fah-LSL mouse model to study BEC-to-hepatocyte conversion

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Biophysics Reports 2023年第6期9卷 309-324页

作者： Xingrui Wang Wenjuan Pu Huan Zhu Mingjun Zhang Bin Zhou New Cornerstone Science laboratory State Key Laboratory of Cell Biology Shanghai Institute of Biochemistry and Cell Biology Center for Excellence in Molecular Cell Science Chinese Academy of Sciences University of Chinese Academy of Sciences key laboratory of Systems Health Science of zhejiang province School of Life Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences School of Life Science and technology Shanghai Tech University

The liver consists predominantly of hepatocytes and biliary epithelial cells(BECs), which serve distinct physiological functions. Although hepatocytes primarily replenish their own population during homeostasis and injury repair, recent findings have suggested that BECs can transdifferentiate into hepatocytes when hepatocyte-mediated liver regeneration is impaired. However, the cellular and molecular mechanisms governing this BEC-to-hepatocyte conversion remain poorly understood largely because of the inefficiency of existing methods for inducing lineage conversion. Therefore, this study introduces a novel mouse model engineered by the Zhou’s lab, where hepatocyte senescence is induced by the deletion of the fumarylacetoacetate(Fah) gene. This model facilitates the efficient conversion of BECs to hepatocytes and allows for the simultaneous lineage tracing of BECs; consequently, a transitional liver progenitor cell population can be identified during lineage conversion. This study also outlines the technical procedures for utilizing this model to determine the underlying cellular and molecular mechanisms of BEC-to-hepatocyte conversion and provides new insights into liver regeneration and its underlying molecular mechanism.

关键词： Liver regeneration BEC-to-hepatocyte transdifferentiation Fumarylacetoacetate (Fah) gene Transitional liver progenitor cells (TLPC) Lineage tracing

Inverse design of an integrated-nanophotonics optical neural network

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Science Bulletin 2020年第14期65卷 1177-1183,M0004页

作者： Yurui Qu Huanzheng Zhu Yichen Shen Jin Zhang Chenning Tao Pintu Ghosh Min Qiu key laboratory of 3D Micro/Nano Fabrication and Characterization of zhejiang province School of EngineeringWestlake UniversityHangzhou 310024China Institute of advanced technology Westlake Institute for Advanced StudyHangzhou 310024China State key laboratory of Modern Optical Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Physics Massachusetts Institute of TechnologyCambridgeMA 02139USA Electrical and Computer Engineering University of CaliforniaSan DiegoCA 92093USA

Artificial neural networks have dramatically improved the performance of many machine-learning applications such as image recognition and natural language processing. However, the electronic hardware implementations of the above-mentioned tasks are facing performance ceiling because Moore’s Law is slowing down. In this article, we propose an optical neural network architecture based on optical scattering units to implement deep learning tasks with fast speed, low power consumption and small *** optical scattering units allow light to scatter back and forward within a small region and can be optimized through an inverse design method. The optical scattering units can implement high-precision stochastic matrix multiplication with mean squared error < 10-4 and a mere 4*4 um2 ***, an optical neural network framework based on optical scattering units is constructed by introducing "Kernel Matrix", which can achieve 97.1% accuracy on the classic image classification dataset MNIST.

关键词： Optical neural networks Deep learning Inverse design Integrated nanophotonics Silicon photonics