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Direct self-assembly of organic micro-arrays with programmable multi-color patterns

Science China Materials 2025年第2期68卷 441-447页

作者： qiuyi Zhang Qi Huang Jianping Li Xiaofei Yue Chenxu Sheng Husnain Jawad zhiguo Zhou Ziyang Song Fengxian Xie Chunxiao Cong zhi-jun qiu Laigui Hu Ran Liu Center of Micro Nano System School of Information Science and TechnologyFudan UniversityShanghai 200438China Institute for Electric Light Sources School of Information Science and TechnologyFudan UniversityShanghai 200438China College of Chemistry and Materials Science Shanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234China Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092China

High-resolution organic arrays with diverse pixel types hold significant promise for various applications,such as full-color displays and photonic *** direct growth of such arrays(e.g.,high-resolution multi-color patterns)cannot be achieved in a single step with conventional ***,we present a viable approach integrating a bottom-up solution strategy with phase-change materials(PCMs),specifically aggregation-induced emission(AIE)*** intentional self-assembly,color-programmable organic micro-patterns featuring distinct phases or colors were ***,manipulating the amount of involved substance for nucleation/crystallization was achieved by adjusting the sizes of pre-defined nucleation *** precise control resulted in varied phases and colors for each ***,high-resolution organic micro-arrays with transfer-free multi-color pixels were directly *** may open avenues for seamless,transfer-free growth of multifunctional micro-patterns using PCMs,holding immense potential for applications in high-resolution full-color imaging/displays,photonic crystals,information storage,and encryption,etc.

关键词： phase-change aggregation-induced emission selfassembly high-resolution multi-color patterns

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Revealing layer-dependent interlayer interactions by doping effect on graphene in WSe_(2)/N-layer graphene heterostructures using Raman and photoluminescence spectroscopy

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Rare Metals 2022年第11期41卷 3646-3653页

作者： Ya-Bing Shan Xiao-Fei Yue Jia-jun Chen Jin-Kun Han Garel Ekoya Lai-Gui Hu Ran Liu zhi-jun qiu Chun-Xiao Cong School of Information Science and Technology Fudan UniversityShanghai200433China Yiwu Research Institute of Fudan University Yiwu322000China Academy for Engineering and Technology Fudan UniversityShanghai200433Chin

Assembling layered materials in the form of vertically stacked heterostructures has enabled the combination of various properties from different two-dimensional(2D)materials,which is receiving a great deal of attention for investigating novel physical phenomena and emerging a facile way to fabricate promising highly tailored architectures.

关键词： graphene layer effect

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Molecular interactions induced collapse of charge density wave quantum states in 2H tantalum disulfide nanosheets

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Nano Research 2023年第5期16卷 6960-6966页

作者： Borgea G.M.Ekoya Jinkun Han junqiang Zhu Yabing Shan Ran Liu Laigui Hu zhi-jun qiu Chunxiao Cong Micro-Nano System Center School of Information Science and TechnologyFudan UniversityShanghai 200438China Yiwu Research Institute of Fudan University Yiwu 322000China

2H-tantalum disulfide(2H-TaS_(2))is a layered metallic transition metal dichalcogenide(TMD)that has recently been studied from the perspective of new physics phenomena,including simultaneous lattice distortion and charge density modulation known as the charge density wave(CDW)*** we explored the collapse of CDW states in few-layer 2H-TaS_(2)induced by molecular interactions using Raman *** results indicate that the CDW states disappear in few-layer 2H-TaS_(2)with rhodamine 6G(R6G)adsorbed due to the charge transfer,which is reflected by the change of behaviors of lattice vibrational modes in 2HTaS_(2).We observed the 2-phonon mode that signifies the CDW formation in 2H-TaS_(2),becomes a phonon-hardened mode when R6G molecules are absorbed on its surface.R6G adsorption further induces the breakdown of the Raman polarization selection rule in 2H-TaS_(2),which results in the alteration of the A_(1g)phonon mode polarization state of 2H-TaS_(2).This study can shed light not only on the underlying mechanisms of CDW states but also on controlling the CDW states under a variety of environmental conditions.

关键词： charge density wave tantalum disulfide rhodamine 6G charge transfer phonon mode

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Influence of seeding promoters on the properties of CVD grown monolayer molybdenum disulfide

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Nano Research 2019年第4期12卷 823-827页

作者： Peng Yang Ai-Guo Yang Lingxiu Chen Jing Chen Youwei Zhang Haomin Wang Laigui Hu Rong-jun Zhang Ran Liu Xin-Ping Qu zhi-jun qiu Chunxiao Cong State Key Laboratory of ASIC and System School of Information Science and Technology Fudan University Shanghai 200433 China State Key Laboratory of Functional Material for Informatics Shanghai Institute (rf Microsystem and Information Technology Chinese Academy of Sciences Changning Road 865 Shanghai 200050 China

Chemical vapor deposition (CVD) is the most efficient method to grow large-area two dimensional (2D) transition metal dichiacogenides (TMDCs) in high *** molybdenum disulfide (MoS2) and seed-assistant are the mostly selected 2D TMDC and growth strategy for such CVD processes,*** the advantages of seed catalysts in facilitating the nucleation,achieving higher yield and better repeatability,as well as their effects on the morphologies of as-grown MoS2 have been studied,the influence of seeding promoters on both optical and electrical properties of as-grown monolayer MoS2 is not known comprehensively,which is indeed critical for understanding fundamental physics and developing practical application of such emerging 2D *** this report,we systematically investigated the effect of different seeding promoters on the properties of CVD-grown monolayer *** is found that different seed molecules lead to different impacts on the optical and electrical properties of as-grown monolayer *** three different seed catalysts (perylene-3,4,9,10-tetracarboxylic acid tetrapotassium salt (PTAS),copper phthalocyanine (CuPc),and crystal violet (CV)),PTAS performs better in obtaining large area monolayer MoS2 with good optical quality and high electrical mobility than the other *** work gives a guide for modifying the properties of as-grown monolayer MoS2 and other 2D transition metal dichalcogenides in seeding promoters-assisted synthesis process.

关键词： transition metal dichalcogenides monolayer M0S2 seeding promoters chemical vapor deposition optical and electrical properties

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In-situ artificial retina with all-in-one reconfigurable photomemristor networks

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npj Flexible Electronics 2023年第1期7卷 265-273页

作者： Yichen Cai Yizhou Jiang Chenxu Sheng zhiyong Wu Luqiu Chen Bobo Tian Chungang Duan Shisheng Xiong Yiqiang Zhan Chunxiao Cong zhi-jun qiu Yajie Qin Ran Liu Laigui Hu School of Information Science and Technology Fudan UniversityShanghai 200433China Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicsEast China Normal UniversityShanghai 200241China Yiwu Research Institute of Fudan University Yiwu CityZhejiang 322000China

Despite that in-sensor processing has been proposed to remove the latency and energy consumption during the inevitable data transfer between spatial-separated sensors,memories and processors in traditional computer vision,its hardware implementation for artificial neural networks(ANNs)with all-in-one device arrays remains a challenge,especially for organic-based *** the advantages of biocompatibility,low cost,easy fabrication and flexibility,here we implement a self-powered in-sensor ANN using molecular ferroelectric(MF)-based photomemristor *** ferroelectric depolarization was intentionally introduced into the ANN,which enables reconfigurable conductance and *** photoresponsivity as synaptic weight,the MFbased in-sensor ANN can operate analog convolutional computation,and successfully conduct perception and recognition of white-light letter images in experiments,with low processing energy *** Chinese digits are also recognized and regressed by a large-scale array,demonstrating its scalability and potential for low-power processing and the applications in MF-based in-situ artificial retina.

关键词： artificial networks ferroelectric

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Two-dimensional lateral magnetic tunnel junction with ultrahigh tunneling magnetoresistance

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Nano Research 2025年第2期18卷 958-964页

作者： qiu-qiu Li zhi-Fu Duan Wen-Wen Liu Rong Yang Bo Li Ke-qiu Chen Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China Department of Applied Physics School of Physics and ElectronicsHunan UniversityChangsha 410082China Research Institute of Hunan University in Chongqing Chongqing 401120China Shenzhen Research Institute of Hunan University Shenzhen 518063China

Giant tunneling magnetoresistance(TMR)has always been a pursuit in the research of magnetic tunnel junctions(MTJ).Two-dimensional(2D)magnetic materials have been used to construct lateral MTJ with high *** we investigated the crystal structure and magnetic property of CrSI monolayer,and found that it is a ferromagnetic semiconductor with a Curie temperature of about 180 *** CrSI monolayer with Li adsorption(Li-CrSI)show ferromagnetic half-metallic with a high Curie temperature of 300 *** we designed a lateral Li CrSI/CrSI/Li-CrSI monolayer *** TMR of the MTJs along b transport direction is 3 orders of magnitude times larger than that of the a transport direction,which should result from the different spin filtering ability along the two *** TMR of b transport direction in the MTJ is 7.67×10^(14),which is significantly higher than that of any reported lateral MTJs based on 2D *** results provide a promising avenue for designing lateral MTJs with giant TMR and high Curie temperature.

关键词： two-dimensional materials magnetic tunnel junctions CrSI monolayer tunneling magnetoresistance Li atom adsorption

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Molecular ferroelectric/semiconductor interfacial memristors for artificial synapses

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npj Flexible Electronics 2022年第1期6卷 185-193页

作者： Yichen Cai Jialong Zhang Mengge Yan Yizhou Jiang Husnain Jawad Bobo Tian Wenchong Wang Yiqiang Zhan Yajie Qin Shisheng Xiong Chunxiao Cong zhi-jun qiu Chungang Duan Ran Liu Laigui Hu School of Information Science and Technology Fudan UniversityShanghai 200433P.R.China Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicsEast China Normal UniversityShanghai 200241China Physikalisches Institut and Center for Nanotechnology Universität MünsterWilhelm-Klemm-Straße 1048149 MünsterGermany.

With the burgeoning developments in artificial intelligence,hardware implementation of artificial neural network is also gaining *** this pursuit,ferroelectric devices(i.e.,tunneling junctions and transistors)with voltage thresholds were recently proposed as suitable ***,their development is hindered by the inherent integration issues of inorganic ferroelectrics,as well as poor properties of conventional organic *** contrast to the conventional ferroelectric synapses,here we demonstrated a two-terminal ferroelectric synaptic device using a molecular ferroelectric(MF)/semiconductor *** interfacial resistance can be tuned via the polarization-controlled blocking effect of the semiconductor,owing to the high ferroelectricity and field amplification effect of the *** synaptic features including spike timing-dependent plasticity are *** introduction of the semiconductor also enables the attributes of optoelectronic synapse and in-sensor computing with high image recognition *** interfaces may pave the way for the hardware implementation of multifunctional neuromorphic devices.

关键词： polarization ferroelectric artificial

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“One stone, two birds”: Salt template enabling porosity engineering and single metal atom coordinating toward high-performance zinc-ion capacitors

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Journal of Energy Chemistry 2025年第1期100卷 637-645页

作者： Chunliu Zhu Huanyu Liang Ping Li Chenglong qiu Jingyi Wu Jingwei Chen Weiqian Tian Yue Zhu zhi Li Huanlei Wang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina Department of Chemical and Materials Engineering University of AlbertaAlberta T6G 2V4EdmontonCanada

Zinc-ion hybrid capacitors (ZIHCs) have received increasing attention as energy storage devices owing to their low cost,high safety,and environmental ***,their progress has been hampered by low energy and power density,as well as unsatisfactory long-cycle stability,mainly due to the lack of suitable electrode *** this context,we have developed manganese single atoms implanted in nitrogen-doped porous carbon nanosheets (MnSAs/NCNs) using a metal salt template method as cathodes for *** metal salt serves a dual purpose in the synthesis process:It facilitates the uniform dispersion of Mn atoms within the carbon matrix and acts as an activating agent to create the porous *** applied in ZIHCs,the MnSAs/NCNs electrode demonstrates exceptional performance,including a high capacity of 203 m Ah g^(-1),an energy density of 138 Wh kg^(-1)at 68 W kg^(-1),and excellent cycle stability with 91%retention over 10,000 *** calculations indicate that the introduced Mn atoms modulate the local charge distribution of carbon materials,thereby improving the electrochemical *** work demonstrates the significant potential of carbon materials with metal atoms in zinc-ion hybrid capacitors,not only in enhancing electrochemical performance but also in providing new insights and methods for developing high-performance energy storage devices.

关键词： Zinc ion hybrid capacitors Cathodes Carbon materials Heteroatoms Single atoms

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Subsection cooling system of hot rolling silicon steel and its industrial application

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Journal of Iron and Steel Research International 2025年第1期32卷 159-170页

作者： qiu-na Wang Ji-quan Sun Li-po Yang Hai-shen Wang Li-jie Dong Jie-ming Li Zhen-yang zhi Yan-wen Bi National Engineering Research Center of Flat Rolling Equipment University of Science and Technology BeijingBeijing100083China Hot Rolling Department of Qian’an Iron and Steel Corporation Shougang Company LimitedTangshan064404HebeiChina National Engineering Research Center for Equipment and Technology of Cold Strip Rolling Yanshan UniversityQinhuangdao066004HebeiChina

An online subsection cooling method for hot rolling silicon steel was designed to achieve local adjustment of transverse roll ***,it was able to meet the requirements of edge drop of the strip by using the features of online thermal ***,after the new subsection spray beam was installed at the exit of mill,the special local cooling rules were analyzed for altering the thermal crown of roll according to rolling process ***,the dynamic impact of subsection cooling on the local thermal crown could just be obtained according to the measured ***,the heat transfer coefficient was determined by different subsection cooling curves under varied rolling ***,the rolling rhythm and variable conditions were important dynamic factors of transient roll temperature in practical rolling ***,real-time calculation and presetting of the thermal crown were carried out to maximize special requirements of load roll gap on local strip *** this new method,the transient temperature and the thermal crown of roll could be quantitatively controlled *** the practical results showed that the predicted temperature was able to match the measured value by more than 95%.Meanwhile,the adjustable range of thermal crown increased by more than 2.5 ***,the qualification rate of strip edge crown has increased from the original 30%to over 70%.

关键词： Subsection cooling Thermal roll crown Multi-parameter coupling Hot rolling Silicon steel

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Coagulation indices and fibrinogen degradation products as predictive biomarkers for tumor-node-metastasis staging and metastasis in gastric cancer

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 110-120页

作者： Yi-Qing Shen qiu-Wan Wei Yi-Ren Tian Yun-zhi Ling Min Zhang Clinical Laboratory Civil Aviation Shanghai HospitalGubei Branch of Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200000China Clinical Laboratory Tongji Hospital of Tongji UniversityShanghai 200000China

BACKGROUND Gastric cancer(GC)is a prevalent malignancy with a substantial health burden and high mortality rate,despite advances in prevention,early detection,and *** with the global average,Asia,notably China,reports disproportionately high GC *** disease often progresses asymptoma-tically in the early stages,leading to delayed diagnosis and compromised ***,it is crucial to identify early diagnostic biomarkers and enhance treatment strategies to improve patient outcomes and reduce *** Retrospectively analyzed the clinical data of 148 patients with GC treated at the Civil Aviation Shanghai Hospital between December 2022 and December *** associations of coagulation indices-partial thromboplastin time(APTT),prothrombin time(PT),thrombin time(TT),fibrinogen,fibrinogen degradation products(FDP),fasting blood glucose,and D-dimer(D-D)with TNM stage and distant metastasis were *** Prolongation of APTT,PT,and TT was significantly correlated with the GC TNM ***,abnormal coagulation system activation was closely related to disease *** FDP and D-D were significantly associated with distant metastasis in GC(P<0.05),suggesting that increased fibrinolytic activity contributes to increased metastatic *** Our Results reveal coagulation indices,FDPs as GC biomarkers,reflecting abnormal coagulation/fibrinolysis,aiding disease progression,metastasis prediction,and helping clinicians assess thrombotic risk for early intervention and personalized treatment plans.

关键词： Coagulation indexes Fibrinogen degradation products Gastric cancer Tumor-node-metastasis staging Distant metastasis

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