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Recent progress of flexible electronics by 2D transition metal dichalcogenides

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Nano Research 2022年第3期15卷 2413-2432页

作者： Lu Zheng xuewen Wang Hanjun Jiang manzhang xu Wei Huang Zheng Liu Frontiers Science Center for Flexible Electronics(FSCFE)&Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical UniversityXi’an 710072China Shaanxi Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi’an 710072China School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

Flexible electronics is the research field with interdisciplinary crossing and *** shows the promising advantages of novel device configurations,low-cost and low-power consumption due to their flexible and soft *** layered two-dimensional(2D)materials especially transition metal dichalcogenides,have triggered great interest in ultra-thin 2D flexible electronic devices and optoelectronic devices because of their direct and tunable bandgaps,excellent electrical,optical,mechanical,and thermal *** review aims to provide the recent progress in 2D TMDs and their applications in flexible *** fundamental electrical properties and mechanical properties of materials,flexible device configurations,and their performance in transistors,sensors,and photodetectors are thoroughly *** last,some perspectives are given on the open challenges and prospects for 2D TMDs flexible electronic devices and new device opportunities.

关键词： two-dimensional materials flexible electronics flexible transistors flexible sensors

Inverse design and realization of an optical cavity-based displacement transducer with arbitrary responses

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Opto-Electronic Advances 2023年第3期6卷 12-24页

作者： Qianbo Lu Qingxiong Xiao Chengxiu Liu Yinan Wang Qixuan Zhu manzhang xu xuewen Wang Xiaoxu Wang Wei Huang Ningbo Institute of Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics(FSCFE)MIIT Key Laboratory of Flexible Electronics(KLoFE)Shaanxi Key Laboratory of Flexible Electronics(KLoFE)Institute of Flexible Electronics(IFE)Northwestern Polytechnical UniversityXi'an 710072China The Key Laboratory of Information Fusion Technology Ministry of EducationSchool of AutomationNorthwestern Polytechnical UniversityXi'an 710072China

Optical cavity has long been critical for a variety of applications ranging from precise measurement to spectral analysis.A number of theories and methods have been successful in describing the optical response of a stratified optical cavity,while the inverse problem,especially the inverse design of a displacement sensitive cavity,remains a significant challenge due to the cost of computation and comprehensive performance *** paper reports a novel inverse design methodology combining the characteristic matrix method,mixed-discrete variables optimization algorithm,and Monte Carlo method-based tolerance *** material characteristics are indexed to enable the mixed-discrete variables optimization,which yields considerable speed and efficiency *** method allows arbitrary response adjustment with technical feasibility and gives a glimpse into the analytical characterization of the optical *** entirely different light-displacement responses,including an asymmetric sawtooth-like response and a highly symmetric response,are dug out and experimentally achieved,which fully confirms the validity of the *** compact Fabry-Perot cavities have a good balance between performance and feasibility,making them promising candidates for displacement *** importantly,the proposed inverse design paves the way for a universal design of optical cavities,or even nanophotonic devices.

关键词： inverse design optical cavity displacement transducer mixed-discrete variables optimization stratified system

The Soft-Strain Effect Enabled High-Performance Flexible Pressure Sensor and Its Application in Monitoring Pulse Waves

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Research 2023年第1期2022卷 525-534页

作者： Yue Li Yuan Wei Yabao Yang Lu heng Lei Luo Jiuwei Gao Hanjun Jiang Juncai Song manzhang xu xuewen Wang Wei Huang Frontiers Science Center for Flexible Electronics(FSCFE)and Institute of Flexible Electronics(IFE) Northwestern Polytechnical UniversityXi'an710072China MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi'an710072China Shaanxi Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi'an710072China Key Laboratory of Flexible Electronics of Zhejiang Province Ningbo Institute of Northwestern Polytechnical University218 Qingyi RoadNingbo315103China State Key Laboratory of Organic Electronics and Information Displays Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing210023China Key Laboratory of Flexible Electronics(KLoFE)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech).Nanjing211800China

Flexible and wearable pressure sensors attached to human skin are effective and convenient in accurate and real-time tracking of various physiological signals for disease diagnosis and health *** flexible pressure sensors are constructed using compressible dielectric or conductive layers,which are electrically sensitive to external mechanical ***,saturated deformation under large compression significantly restrains the detection range and sensitivity of such ***,we report a novel type of flexible pressure sensor to overcome the compression saturation of the sensing layer by softstrain ffect,enabling an utra-high sensitivity of~636 kPa^(-1) and a wide detection range from 0.1 kPa to 56 *** addition,the cyclic loading-unloading test reveals the excellent stability of the sensor,which maintains its signal detection after 10.000 cycles of 10 kPa *** sensor is capable of monitoring arterial pulse waves from both deep tissue and distal parts,such as digital arteries and dorsal pedal arteries,which can be used for blood pressure estimation by pulse transit time at the same artery branch.

关键词： restrain overcome attached

Observation of room‐temperature out‐of‐plane switchable electric polarization in supported 3R‐MoS_(2) monolayers

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SmartMat 2023年第2期4卷 154-162页

作者： Li Ma Liu Yang Yuqiang Fang manzhang xu Ruihuan Duan Vanessa Li Zhang xuewen Wang Fuqiang Huang Menghao Wu Zheng Liu Ting Yu School of Physics and Technology Wuhan UniversityWuhanChina School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and TechnologyWuhanChina State Key Laboratory of High‐Performance Ceramics and Superfine Microstructure and CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiChina Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics(IFE)Northwestern Polytechnical UniversityXi'anChina Centre for Programmed Materials School of Materials Science and EngineeringNanyang Technological UniversitySingaporeSingapore Wuhan Institute of Quantum Technology WuhanChina

Two‐dimensional(2D)ferroelectrics have attracted considerable attention due to their potential in the development of devices of miniaturization and *** several van der Waals(vdW)‐layered materials show ferroelectricity,the experimental demonstrations of ferroelectric behavior in monolayers are very *** we report the observation of room‐temperature out‐of‐plane switchable electric polarization in supported MoS_(2) monolayers exfoliated from 3R‐stacked bulk crystals under ambient *** in situ piezoelectric force microscopy and Kelvin probe force microscopy in a glovebox,we reveal that trapped water/ice molecules are responsible for this switchable electric polarization and this conclusion is strongly supported by theoretical *** is worth noting that the water/ice trapping in the monolayers exfoliated from 2H‐stacked MoS_(2) crystals is not as much as that in 3R monolayers and,consequently,the out‐of‐plane electric polarization is missing *** findings indicate that monolayers with a trapped single layer of polar molecules might be emerging alternatives to 2D ***,the stacking sequences may bring new properties and applications to 2D vdW materials not only when we stack them up but also when we thin them down.

关键词： 3R‐MoS_(2)monolayers Kelvin probe force microscopy out‐of‐plane electric polarization piezoelectric force microscopy water/ice molecules

Quasi-One-Dimensional van der Waals Transition Metal Trichalcogenides

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Research 2023年第4期2023卷 219-243页

作者： Mengdi Chen Lei Li manzhang xu Weiwei Li Lu Zheng xuewen Wang Frontiers Science Center for Flexible Electronics(FSCFE)&Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China Shaanxi Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an710072China Key Laboratory of Flexible Electronics of Zhejiang Provience Ningbo Institute of Northwestern Polytechnical University218 Qingyi RoadNingbo 315103China.

The transition metal trichalcogenides(TMTCs)are quasi-one-dimensional(1D)MX_(3)-type van der Waals layered semiconductors,where M is a transition metal element of groups IV and V,and X indicates chalcogen *** to the unique quasi-1D crystalline structures,they possess several novel electrical properties such as variable bandgaps,charge density waves,and superconductivity,and highly anisotropic optical,thermoelectric,and magnetic *** study of TMTCs plays an essential role in the 1D quantum materials field,enabling new opportunities in the material research ***,tremendous progress in both materials and solid-state devices has been made,demonstrating promising applications in the realization of nanoelectronic *** review provides a comprehensive overview to survey the state of the art in materials,devices,and applications based on ***,the symbolic structure,current primary synthesis methods,and physical properties of TMTCs have been ***,examples of TMTC applications in various fields are presented,such as photodetectors,energy storage devices,catalysts,and ***,we give an overview of the opportunities and future perspectives for the research of TMTCs,as well as the challenges in both basic research and practical applications.

关键词： Transition realization crystalline

Controlled growth of ultrathin ferromagneticβ-MnSe semiconductor

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SmartMat 2022年第3期3卷 482-490页

作者： Jingyun Zou Yumeng Yang Dianyi Hu Lixing Kang Chao Zhu Dan Tian Xiaodong Lv Govindan Kutty Yuxi Guo manzhang xu Fengyu Li Guo Hong Zheng Liu Division of Advanced Nano‐Materials Suzhou Institute of Nano‐Tech and Nano‐BionicsChinese Academy of SciencesSuzhouChina Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and TechnologySuzhou University of Science and TechnologySuzhouChina School of Information Science and Technology ShanghaiTech UniversityShanghaiChina School of Materials Science and Engineering Nanyang Technological UniversitySingaporeSingapore College of Materials Science and Engineering Co‐Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjingChina School of Physical Science and Technology Inner Mongolia UniversityHohhotChina Institute of Applied Physics and Materials Engineering University of MacaoTaipaMacaoChina Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of MacaoTaipaMacaoChina

Two-dimensional(2D)magnetic crystals with intrinsic ferromagnetism are highly desirable for novel spin-electronic ***,the controllable synthesis of 2D magnets,especially the direct growth of 2D magnets on substrate surfaces,is still a ***,we demonstrate the synthesis of ultrathin zinc-blende phase manganese selenide(β-MnSe)nanosheets using the chemical vapor deposition(CVD)*** 2Dβ-MnSe crystals exhibit distinct ferromagnetic properties with a Curie temperature of 42.3 *** functional theory(DFT)calculations suggest that the ferromagnetic order inβ-MnSe originates from the exchange coupling between the unsaturated Se and Mn *** study presents significant progress in the CVD growth of ultrathin 2D magnetic materials by thinning bulk magnets,and it will pave the way for the building of energy-efficient spintronic devices in the future.

关键词： 2D ferromagnetism controllable growth manganese selenide morphological engineering nonlayered crystals

Enhancing the cycling stability of Na-ion batteries by bonding MoS2 on assembled carbon-based materials

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Nano Materials Science 2019年第4期1卷 310-317页

作者： Pin Song Jun Di Lixing Kang manzhang xu Bijun Tang Jun Xiong Jiewu Cui Qingsheng Zeng Jiadong Zhou Yongmin He Qundong Fu Juan Peng Shasha Guo Bo Lin Jingyu Zhang Peng Meng Zheng Liu School of Materials Science&Engineering Nanyang Technological UniversitySingapore639798Singapore Institute for Energy Research Jiangsu University301 Xuefu RoadZhenjiang212013China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China Stage Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering School of Chemistry and Chemical EngineeringNingxia UniversityYinchuan750021China

Room temperature Na-ion batteries(SIBs) show great potential for use as renewable energy storage ***, the large-scale application of SIBs has been hindered by the lack of an ideal SIBs anode material. We synthesized MoS2 on carbonized graphene-chitosan(G-C) using the hydrothermal method. The strong interaction between the MoS2 and the G-C greatly improved the electron transport rate and maintained the structural stability of the electrode, which lead to both an excellent rate capability and long cycle stability. The G-C monolith was proven to enhance the electrical conductivity of the composites and served as a matrix for uniformly dispersing active MoS2 nanosheets(NSs), as well as being a buffer material to adapt to changes in volume during the *** as an anode material for SIBs, the MoS2-G-C electrode showed good cycling stability(527.3mAh g-1 at100 m A g-1 after 200 cycles), excellent rate capability, and a long cycle life(439.1 m Ah g-1 at 1 A g-1 after 200 cycles).

关键词： Na-ion batteries Carbon-based materials MoS2 Long cycle life

Space-confined microwave synthesis of ternary-layered BiOCl crystals with high-performance ultraviolet photodetection

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InfoMat 2020年第3期2卷 593-600页

作者： Lixing Kang xuechao Yu Xiaoxu Zhao Qingling Ouyang Jun Di manzhang xu Dan Tian Weiliang Gan Calvin CIAng Shoucong Ning Qundong Fu Jiadong Zhou R.G.Kutty Ya Deng Pin Song Qingsheng Zeng Stephen J.Pennycook Jun Shen Ken-T.Yong Zheng Liu School of Materials Science and Engineering Nanyang Technological UniversitySingapore CINTRA CNRS/NTU/THALES Singapore Centre for OptoElectronics and Biophotonics School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore School of Physical and Mathematical Sciences Nanyang Technological UniversitySingapore Department of Materials Science and Engineering National University of SingaporeSingapore Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqingChina

In recent years,two-dimensional(2D)ternary materials have attracted wide attention due to their novel properties which can be achieved by regulating their chemical composition with a very great degree of freedom and adjustable ***,as for the precise synthesis of 2D ternary materials,great challenges still lie ahead that hinder their further *** this work,we demonstrated a simple and reliable approach to synthesize 2D ternary-layered BiOCl crystals through a microwave-assisted space-confined process in a short time(<3 minutes).Their ultraviolet(UV)detection performance was analyzed *** photodetectors based on the as-obtained BiOCl platelets demonstrate high sensitivity to 266-nm laser *** responsivity is calculated to be8 A/W and the response time is up to be18 *** the other hand,the device is quite stable after being exposed in the ambient air within 3 weeks and the response is almost unchanged during the *** facile and fast synthesis of single crystalline BiOCl platelets and its high sensitivity to UV light irradiation indicate the potential optoelectronic applications of 2D BiOCl photodetectors.

关键词： 2D materials bismuth oxyhalide microwave synthesis UV photodetector