检索结果-南通市图书馆

High-performance multilayer Flexible Piezoresistive Pressure Sensor with Bionic Hierarchical and Anisotropic Structure

引用

Journal of Bionic Engineering 2022年第5期19卷 1439-1448页

作者： Meng Wang Yue Yu Yunhong Liang Zhiwu Han Chunbao Liu Suqian Ma Zhaohua Lin Lei Ren The Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130025China Center of Reproductive Medicine Center of Prenatal DiagnosisThe First Hospital of Jilin UniversityChangchun 130021China Department of Endocrinology and Metabolism China-Japan Union Hospital of Jilin UniversityChangchun 130033China School of Mechanical and Aerospace Engineering Jilin UniversityChangchun 130025China

Flexible pressure sensor that enables detection of multimodal signals has greater advantages in human–computer interaction,medical/health care,and other applications.To make a versatile flexible pressure sensor,hierarchical and anisotropy structure are key features to improve sensing performance and realize multi-signal detection.However,traditional flexible sensors usually have narrow linear range and single signal detection capability.Herein,a highly sensitive flexible piezoresistive pressure sensor which has broad linear range of pressure is developed by replicating one dimensional microstructures from reed leaf and using multilayer superposition of micropatterned polydimethylsiloxane(m-PDMS).Through superposing 4 layers of parallel micropatterned constructive substrates,the multilayer piezoresistive pressure sensor exhibits a high sensitivity of 2.54 kPa?1,a fast response time of 30 ms,and a broad linear range of 107 kPa.The flexible piezoresistive pressure sensor is also highly robust:there is no fatigue after testing for at least 1000 cycles.Due to the specific anisotropy of the micro-structure,the sensor can measure the tangential force in different directions.It permits multimode signal detection,including pressure,tangential force,and deformation.The versatile flexible pressure sensor enables effective monitoring of multisignals,it reveals great potential for medical and health care,flexible human–computer interaction,and intelligent robot.

关键词： Piezoresistive pressure sensor multilayer Anisotropy Micro-structure Bionic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design and characterization of metallic glass/graphene multilayer with excellent nanowear properties

引用

Friction 2022年第11期10卷 1913-1926页

作者： Qing ZHOU Dawei LUO Dongpeng HUA Wenting YE Shuo LI Qiguang ZOU Ziqiang CHEN Haifeng WANG State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China

The excellent properties of metallic glass(MG)films make them perfect candidates for the use in miniature systems and tools.However,their high coefficients of friction(COFs)and poor wear resistance considerably limit their long-term performance in nanoscale contact.We report the fabrication of a MG/graphene multilayer by the repeated deposition of Cu_(50)Zr_(50) MG with alternating layers of graphene.The microstructure of the multilayer was characterized by the transmission electron microscopy(TEM).Its mechanical and nanotribological properties were studied by nanoindentation and nanoscratch tests,respectively.A molecular dynamics(MD)simulation revealed that the addition of graphene endowed the MG with superelastic recovery,which reduced friction during nanoscratching.In comparison with the monolithic MG film,the multilayer exhibited improved wear resistance and a low COF in repeated nanowear tests owing to the enhanced mechanical properties and lubricating effect caused by the graphene layer.This work is expected to motivate the design of other novel MG films with excellent nanowear properties for engineering applications.

关键词： metallic glass(MG) multilayer nanowear properties molecular dynamics(MD)simulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optical and Nanomechanical Characteristics of multilayer Structure Derived from Color-changing Beetle Popillia Indgigonacea Motsch

引用

Journal of Bionic Engineering 2022年第3期19卷 777-787页

作者： Wei Wu Jiyu Sun School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai200093China Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun130022China

The architecture of multilayer acting in colorful appearance has been widely reported.In spite of this,it is interesting that dense multilayer in epicuticle for Popillia indgigonacea Motsch elytra not only helps presenting angle dependence color-changing,but also showing higher reduced modulus(Er)and hardness(H)to protect soft abdomen below.The optical and nanomechanical properties of elytron were investigated by structural observation,optical experiments,nanoindentation and coupled bionic model simulations.The peak reflectance gradually varies from 588 nm to 510 nm with color change from orange and yellow to green when the incidence angle switches from 0°to 60°,which is attributed to the regulated variation from refractive spectra between the layers in different angle.In addition,the relatively higher Er and H of elytron epicuticle and endocuticle could play a role in resisting force with its multilayer.To identify the multifunctional characteristics of multilayer,optical and mechanical simulations were conducted based on coupled bionic models,and a strong consistence between the experiments and simulations is obtained.The multilayer could resist force with lowest strain and stress,and the structural thickness is the most necessary factors that could adjust the colors in color-changing process.

关键词： Cuticle multilayer Angle-dependence color-changing Nanomechanical properties Coupled bionic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Anisotropic plasmon dispersion and damping in multilayer 8-Pmmn borophene structures

引用

Chinese Physics B 2022年第11期31卷 510-514页

作者：刘可鉴李健李清旭朱家骥 School of Science Chongqing University of Posts and TelecommunicationsChongqing 400065China Institute for Advanced Sciences Chongqing University of Posts and TelecommunicationsChongqing 400065China Southwest Center for Theoretical Physics Chongqing UniversityChongqing 401331China

We investigate the collective plasma oscillations theoretically in multilayer 8-Pmmn borophene structures,where the tilted Dirac electrons in spatially separated layers are coupled via the Coulomb interaction.We calculate the energy dispersions and Landau dampings of the multilayer plasmon excitations as a function of the total number of layers,the interlayer separation,and the different orientations.Like multilayer graphene,the plasmon spectrum in multilayer borophene consists of one in-phase optical mode and N-1 out-of-phase acoustical modes.We show that the plasmon modes possess kinks at the boundary of the interband single-particle continuum and the apparent anisotropic behavior.All the plasmon modes approach the same dispersion at a sufficiently large interlayer spacing in the short-wavelength limit.Especially along specific orientations,the optical mode could touch an energy maximum in the nondamping region,which shows non-monotonous behavior.Our work provides an understanding of the multilayer borophene plasmon and may pave the way for multilayer borophene-based plasmonic devices.

关键词： plasmon 8-Pmmn borophene multilayer two-dimensional materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Flexible multilayer lead-free film capacitor with high energy storage performances via heterostructure engineering

引用

Journal of Materiomics 2022年第4期8卷 772-780页

作者： Ningning Sun Jinhua Du Ye Zhao Chunxiao Lu Pei Han Yong Li Qiwei Zhang Xihong Hao Inner Mongolia Key Laboratory of Ferroelectric-Related New Energy Materials and Devices School of Materials and MetallurgyInner Mongolia University of Science and TechnologyBaotou014010China

The immense potential of flexible energy storage materials applied in wearable electronic devices hasstimulated a lot of science researches on manufacturing technology and performance optimization.Herein, an all-inorganic flexible ferroelectric film with multilayer heterostructure is prepared based onMn doped Bi0.5Na0.5TiO_(3)eBiNi0.5Zr0.5O_(3) (Mn:BNT-BNZ) and Bi0.5Na0.5TiO_(3)eBiZn0.5Zr0.5O_(3) (BNT-BZZ)relaxor ferroelectrics. A win-win situation of breakdown strength and polarization is achieved in theMn:BNT-BNZ/BNT-BZZ multilayer film with the stacking period N - 3, of which energy density and ef-ficiency reach 80.4 J/cm3 and 62.0% respectively. It is proposed that the excellent energy storage per-formances are attributed to the synergistic effect of the electric field amplification effect, interfaceblocking effect and the polarization coupling effect based on the multilayer heterostructure. Moreover,the flexible ferroelectric film exhibits outstanding temperature (25e205 - C), frequency (0.5e5 kHz)stability and antifatigue property (1 108 cycles), and can well maintain stable performance at differenttensile/compressive bending radii (10e5 mm) and even after 104 bending cycles with a fixed bendingradius of 3 mm. This work opens up a promising route to the development of flexible energy storagematerials.

关键词： Energy storage Ferroelectric Flexible multilayer Heterostructure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Corrosion mechanism of CuAl-NiC abradable seal coating system——The influence of porosity,multiphase,and multilayer structure on the corrosion failure

引用

Journal of Materials Science & Technology 2021年第29期88卷 258-269页

作者： Yumeng Ni Fan Zhang Demian I.Njoku Yingjie Yu Jinshan Pan Meijiang Meng Ying Li Corrosion and Protection Division Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Material Science and Technology University of Science and Technology of ChinaShenyang110016China Department of Engineering and Design School of Engineering and InformaticsUniversity of SussexBrightonBN19RHUnited Kingdom Division of Surface and Corrosion Science KTH Royal Institute of TechnologyDrottning Kristinas väg.51SE-10044StockholmSweden Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China

In this study,the corrosion behavior of the CuAl-NiC abradable seal coating system in chloride solution was investigated to systematically research the effect of porosity,multiphase,and multilayer structure on the corrosion failure.Through the composition and structure analysis,the corrosion process of the system was predicted and then verified with mercury intrusion porosimetry,cross-section SEM/EDS analysis,and electrochemical measurements.The results demonstrated that the interphase selective corrosion caused the porosity of the top layer to decrease first and then increase during the corrosion development.The interlayer galvanic corrosion,determined by the pore connectivity,is crucial for corrosion failure.

关键词： Abradable seal coating system Galvanic corrosion multilayer Porosity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fabrication of solid CH-CD multilayer microspheres for inertial confinement fusion

引用

Matter and Radiation at Extremes 2021年第2期6卷 28-36页

作者： Meifang Liu Xing Ai Yiyang Liu Qiang Chen Shuai Zhang Zhibing He Yawen Huang Qiang Yin Research Center of Laser Fusion China Academy of Engineering PhysicsMianyangChina State Key Laboratory of Envronment-Friendly Energy Materials Southwest University of Science and TechnologyMianyangChina

Deuterated polymer microspheres can be used as a neutron source in conjunction with lasers because thermonuclear fusion neutrons can be produced efficiently by collisions of the resulting energetic deuterium ions.A new type of solid deuterated polymer microsphere with a carbon hydrogen–carbon deuterium(CH-CD)multilayer has been designed for preparing the target for inertial confinement fusion(ICF)experiments.To fabricate these solid CH-CD multilayer microspheres,CH beads are first fabricated by a microfluidic technique,and the CD coating layer is prepared by a plasma polymerization method.Both polystyrene(PS)and poly(α-methylstyrene)(PAMS)are used as the material sources for the CH beads.The effects of the PS and PAMS materials on the quality of the solid CH beads and the resulting CH-CD multilayer polymer microspheres are investigated.The solid PS beads have better sphericity and a smoother surface,but large vacuoles are observed in solid PS-CD multilayer microspheres owing to the presence of residual fluorobenzene in the beads and a glass transition temperature of the solid PS beads that is lower than the temperature of plasma polymerization.Therefore,solidPAMSbeads are more suitable as a mandrel for fabricating solid CH-CD multilayer polymer microspheres.Solid CH-CD multilayer microspheres with specified size have been successfully prepared by controlling the droplet size and the CD deposition rate and deposition time.Compared with the design value,the diameter deviation of the inner CH beads and the thickness deviation of the CD layer can be controlled within 20μmand 2μm,respectively.Thus,an approach has been developed to fabricate solid CH-CD multilayer microspheres that meet the physical design requirements for ICF.

关键词： method. multilayer beads

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effect of annealing treatment on microstructure and mechanical properties of Al/Ni multilayer composites during accumulative roll bonding (ARB) process

引用

Journal of Iron and Steel Research(International) 2020年第1期27卷 96-104页

作者： Hui-wen Zhu Bao-yi Yu Hao Zhang Bo-ning Yu Shu-ning Lv Li Zheng Run-xia Li School of Material Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808GuangdongChina

Al/Ni multilayer composites are produced by accumulative roll bonding process and then annealed with different temperatures and time.Macroscopic images,microstructure and mechanical properties of Al/Ni multilayer composites are investigated.As for the macroscopic images,although there was an edge crack along the rolling direction at the third pass,the defect of composites was not serious and the forming quality of composites was relatively good.The yield strength and elongation of Al/Ni multilayer composites are improved after the annealing treatment;however,with the increase in annealing temperature and time,the yield strength and ciongation of Al/Ni multilayer composites are decreased.During the process of annealing treatment,aluminum atoms diffuse in the way of vacancy diffusion,which results in the formation of Al3Ni intermetallic phase at Al/Ni interface and Kirkendall void in the aluminum side.The content of Al3Ni intermetallic phase and Kirkenckill void would increase with the increase in annealing temperature and time.

关键词： Al/Ni multilayer composite Accumulative roll bonding process Annealing treatment Interrnetallic phase

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Foam/Film Alternating multilayer Structure with High Toughness and Low Thermal Conductivity Prepared via Microlayer Coextrusion

引用

Chinese Journal of Polymer Science 2021年第5期39卷 566-572,I0006页

作者： Qi LUO Hong-Ting PU Zhi-Hua Zhang Xiong Zhang Cheng-Long Yu Department of Polymeric Materials School of Materials Science&EngineeringTongji UniversityShanghai 201804China Key Laboratory of Advanced Civil Engineering Materials(Ministry of Education) Tongji UniversityShanghai 201804China School of Physics Science and Engineering&Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology Tongji UniversityShanghai 200092China

multilayer membranes prepared via microlayer coextrusion have attracted wide attention due to their unique properties and broad applications.In present study,the foam/film alternating multilayer sheets based on ethylene-vinyl acetate copolymer(EVA)and high-density polyethylene are successfully prepared via microlayer coextrusion.The cells in the sheets are single-cell-array along the foamed EVA layers with uniform cell size.In addition,the effects of layer number and foam relative thickness on morphology,mechanical properties,damping and heat insulation properties are investigated.The cell size decreases significantly with increasing layer number due to the enhanced confine effects.The tensile strength,elongation at break,and heat insulation also increase significantly.However,the mechanical damping properties change little in the observed frequency.Meanwhile,with higher relative thickness of EVA foam,the sheets have lower tensile strength and lower thermal conductivity,while the damping properties are enhanced in a specific frequency scope.The elongation at break of the optimized sample comes to 800%and the thermal conductivity decreases to 61 mW·m^(-1)·K^(-1),which shows high toughness and low thermal conductivity,indicating a possible method for preparing materials with high toughness and heat-insulating properties.

关键词： multilayer Foam Coextrusion Toughness Thermal conductivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In Situ Super-Hindrance-Triggered multilayer Cracks for Random Lasing inπ-Functional Nanopolymer Films

引用

Research 2023年第3期6卷 461-472页

作者： Dongqing Lin Yang Li He Zhang Shuai Zhang Yuezheng Gao Tianrui Zhai Shu Hu Chuanxiang Sheng Heng Guo Chunxiang Xu Ying Wei Shifeng Li Yelong Han Quanyou Feng Shasha Wang Linghai Xie Wei Huang Centre for Molecular Systems and Organic Devices(CMSOD) State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM)Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing 210023China College of Physics and Optoelectronics Faculty of ScienceBeijing University of TechnologyBeijing 100124China School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094China State Key Laboratory of Bioelectronics School of Biological Sciences&Medical EngineeringSoutheast UniversityNanjing 210096China College of Engineering and Applied Science Nanjing UniversityNanjing210023China Frontiers Science Center for Flexible Electronics(FSCFE) MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi'an 710072China

In situ self-assembly of semiconducting emitters into multilayer cracks is a significant solution-processing method to fabricate organic high-Q lasers.However,it is still difficult to realize from conventional conjugated polymers.Herein,we create the molecular super-hindrance-etching technology,based on theπ-functional nanopolymer PG-Cz,to modulate multilayer cracks applied in organic single-component random lasers.Massive interface cracks are formed by promoting interchain disentanglement with the super-steric hindrance effect ofπ-interrupted main chains,and multilayer morphologies with photonic-crystal-like ordering are also generated simultaneously during the drop-casting method.Meanwhile,the enhancement of quantum yields on micrometer-thick films(Φ=40%to 50%)ensures high-efficient and ultrastable deep-blue emission.Furthermore,a deep-blue random lasing is achieved with narrow linewidths~0.08 nm and high-quality factors Q≈5,500 to 6,200.These findings will offer promising pathways of organicπ-nanopolymers for the simplification of solution processes applied in lasing devices and wearable photonics.

关键词： multilayer lasing polymer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：