检索结果-内蒙古大学图书馆

SSRN 2024年

作者： Wang, Xiaofei Yang, Xuan Ding, Yongwen Zhang, Hui Li, Jinping Meng, Songhe National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150080 China

The interfacial debonding effect on composites limits their wide application in aerospace. This work utilized the unique water-retention properties of hyaluronic acid by adding it to the sintered liquid phase to form polymeric films. A polymeric film wrapped extended sintering time strategy was adopted to synthesize the interface structure with anti-debonding properties. This interface bonding structure enhances the sintering densification ofZrW2O8/SiO2f composites and effectively improves operational accuracy by providing creep resistance. Furthermore, the interface bonding structure reduces the composites' interfacial polarization and reflection loss, enhancing wave-transparent properties in the 2–18 GHz frequency range. Simultaneously, the composites achieve a controllable coefficient of thermal expansion (CTE) by regulating the liquid phase content and reach near-zero CTE (-0.246 × 10-6 °C-1 [30–300 °C]). Finally, the connection between the thermodynamics and sintering densification of composites was revealed by finite element analysis, and it was deduced that increasing sintering densification is beneficial in reducing the thermal stresses and strains inside the composites. This approach effectively solves the interface debonding problem of composites and provides a unique route to design composites. © 2024, The Authors. All rights reserved.

关键词： Finite element method

来源：评论

学校读者我要写书评

暂无评论

A Single-Layer Piezoelectric Composite Separator for Durable Operation of Li Metal Anode at High Rates

引用

Energy & Environmental Materials 2024年第1期7卷 265-274页

作者： Yuanpeng Ji Botao Yuan Jiawei Zhang Zhezhi Liu Shijie Zhong Jipeng Liu Yuanpeng Liu Mengqiu Yang Changguo Wang Chunhui Yang Jiecai Han Weidong He National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150080China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150080China School of Petroleum Engineering Chongqing University of Science and TechnologyChongqing 401331China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150080China Chongqing Research Institute Harbin Institute of TechnologyChongqing 401151China School of Mechanical Engineering Chengdu UniversityChengdu 610106China

Piezoelectric ceramic and polymeric separators have been proposed to effectively regulate Li deposition and suppress dendrite growth,but such separators still fail to satisfactorily support durable operation of lithium metal batteries owing to the fragile ceramic layer or low-piezoelectricity polymer as ***,by combining PVDF-HFP and ferroelectric BaTiO_(3),we develop a homogeneous,single-layer composite separator with strong piezoelectric effects to inhibit dendrite growth while maintaining high mechanical *** squeezed by local protrusion,the polarized PVDF-HFP/BaTiO_(3)composite separator generates a local voltage to suppress the local-intensified electric field and further deconcentrate regional lithium-ion flux to retard lithium deposition on the protrusion,hence enabling a smoother and more compact lithium deposition morphology than the unpoled composite separator and the pure PVDF-HFP separator,especially at high ***,the homogeneous incorporation of BaTiO_(3)highly improves the piezoelectric performances of the separator with residual polarization of 0.086 pC cm^(-2)after polarization treatment,four times that of the pure PVDF-HFP separator,and simultaneously increases the transference number of lithium-ion from 0.45 to *** from the prominent piezoelectric mechanism,the polarized PVDF-HFP/BaTiO_(3)composite separator enables stable cyclic performances of Li||LiFePO_(4)cells for 400 cycles at 2 C(1 C=170 mA g^(-1))with a capacity retention above 99%,and for 600 cycles at 5 C with a capacity retention over 85%.

关键词： composite separator Li metal anodes piezoelectric materials PVDF-HFP uniform Li deposition

来源：评论

学校读者我要写书评

暂无评论

Quasisymmetry protected Ising spin-orbit coupling

引用

Physical Review B 2023年第15期107卷 155412-155412页

作者： L. L. Tao Qin Zhang Huinan Li Xianjie Wang Yi Wang Yu Sui Bo Song M. Ye. Zhuravlev School of Physics Harbin Institute of Technology Harbin 150001 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 China St. Petersburg State University St. Petersburg 190000 Russia

Quasisymmetry is an approximated symmetry in the sense that it is not the crystalline symmetry but commutes with the Hamiltonian at a lower order. Unlike exact symmetry, quasisymmetry emerges in the context of low-energy effective theory. One of the most desirable properties added by quasisymmetry is the large Berry curvatures due to the perturbatively small band gaps, which are robust against chemical and physical perturbations. Ising spin-orbit coupling (SOC) is a special type of SOC with electron spins polarizing to out-of-plane direction and can protect the spin coherence against the relaxation. For Ising-type superconductors, Ising SOC significantly affects the superconducting properties such as Pauli limit. It is commonly believed that the out-of-plane mirror symmetry Mz is necessary for Ising SOC, which puts a constraint on the allowed materials. Here we demonstrate that the strong Ising SOC exists beyond the system with Mz symmetry and is protected by the quasisymmetry. Based on the group-theoretical analysis and density-functional theory calculations, we show that the lower-order SOC Hamiltonian for certain representation is Ising type, which is protected by the quasisymmetry. Several promising systems with strong Ising SOC of several hundreds of meV near the Fermi energy are identified. In addition, we propose the general design principles to search for the realistic materials. Our results advance the fundamental understanding of Ising spin-orbit physics and greatly broaden the range of the materials hosting the Ising SOC.

关键词： Crystal symmetry Spin polarization Spin-orbit coupling Spintronics Interfaces Density functional theory k dot p method

来源：评论

学校读者我要写书评

暂无评论

Preparation of Brittle Ito Microstructures Using Laser-Induced Forward Transfer technology

SSRN

引用

SSRN 2024年

作者： Sun, Chunqiang Wang, Zhuochao Cao, Wenxin Gao, Gang Yang, Lei Han, Jiecai Zhu, Jiaqi National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China Key Laboratory of Micro-Systems and Micro-Structures Manufacturing Ministry of Education Harbin Institute of Technology Harbin150080 China

The performance of transparent conductive microstructures plays a significant role in determining the device efficiency. The fabrication of ITO microstructures on the flexible optoelectronic devices remains challenging because of the high-temperature processing requirements and brittleness of the ceramic material. This paper highlights a three-dimensional microfabrication technique that combines sacrificial layer etching and laser-induced transfer. By studying the donor material thickness and the laser energy density, control of the sacrificial layer transfer thrust was achieved to yield an optimal microstructure performance. Different shapes of ITO transparent conductive microstructures were fabricated on polydimethylsiloxane (PDMS) surfaces, demonstrating structural integrity, visible light transmittances >90%, and resistivities of ≤8×10−⁴ Ω·cm. Finite element analysis was employed to simulate the impact transfer of the donor material onto the receiving substrate, thereby elucidating the energy-absorbing protective role of the flexible PDMS layer. Effective control of the transfer force was identified as a crucial factor in achieving the successful transfer of brittle films. This high-precision and rapid array processing approach meets the demands of automated batch manufacturing, indicating its potential for use in patterned processing on flexible substrates, as an alternative to lithographic techniques. This technique could be applied in the preparation of electronic skins and flexible devices. Additionally, for the first time, a 3×3 pixel resistive array sensor was integrated on a Ag nanowires/PDMS surface, demonstrating array pressure-sensing capabilities at pressures of 0–80 kPa. This study represents a significant step towards the development of multifunctional flexible optoelectronic devices. © 2024, The Authors. All rights reserved.

关键词： Polydimethylsiloxane

来源：评论

学校读者我要写书评

暂无评论

Modified phase-field-based lattice Boltzmann model for incompressible multiphase flows

引用

Physical Review E 2021年第3期104卷 035305-035305页

作者： Xingchun Xu Yanwei Hu Bing Dai Lei Yang Jiecai Han Yurong He Jiaqi Zhu National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150080 China

Based on the phase-field theory, a multiple-relaxation-time (MRT) lattice Boltzmann model is proposed for the immiscible multiphase fluids. In this model, the local Allen-Chan equation is chosen as the target equation to capture the phase interface. Unlike previous MRT schemes, an off-diagonal relaxation matrix is adopted in the present model so that the target phase-field equation can be recovered exactly without any artificial terms. To check the necessity of removing those artificial terms, comparative studies were carried out among different MRT schemes with or without correction. Results show that the artificial terms can be neglected at low March number but will cause unphysical diffusion or interface undulation instability for the relatively large March number cases. The present modified model shows superiority in reducing numerical errors by adjusting the free parameters. As the interface transport coupled to the fluid flow, a pressure-evolution lattice Boltzmann equation is adopted for hydrodynamic properties. Several benchmark cases for multiphase flow were conducted to test the validity of the present model, including the static drop test, Rayleigh-Taylor instability, and single rising bubble test. For the rising bubble simulation at high density ratios, bubble dynamics obtained by the present modified MRT lattice Boltzmann model agree well with those obtained by the FEM-based level set and FEM-based phase-field models.

关键词： Binary fluids Lattice-Boltzmann methods Navier-Stokes equation

来源：评论

学校读者我要写书评

暂无评论

Mixed Modes Crack Propagation in Cord-Rubber composites: Numerical Simulation and Experimental Verification

SSRN

引用

SSRN 2024年

作者： Ning, Shunlu Su, Benlong Liu, Shouyao Zhou, Tianxiao He, Shixue Wu, Jian Tian, Zhenhui Wang, Youshan National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150001 China Center for Rubber Composite Materials and Structures Harbin Institute of Technology Weihai264209 China

Mixed modes I/II interlaminar delamination damage is one of the major forms of failure in cord-rubber composites, the accurate determination of mode I and mode II fracture toughness nonetheless remains a significant challenge. Hence, this study focused on the development of an analytical method for accurately determining the mode I and mode II fracture toughness of cord-rubber composites through peel and lap shear tests. The cohesive zone model is employed to investigate the mixed modes I/II interlaminar delamination process of cord-rubber composites using finite element analysis. The findings reveal that the mode I and mode II fracture toughness values for the cord-rubber composites are 23.92 N/mm and 13.57 N/mm, respectively. Notably, the discrepancy between numerical simulations and experimental maximum load capacities remains below 5% when the specimen length exceeds 8mm. In summary, this research introduces a robust methodology for evaluating the fracture toughness of cord-rubber composites, and it offers a detailed characterization of the associated crack initiation and propagation characteristics under mixed modes failure conditions. © 2024, The Authors. All rights reserved.

关键词： Fracture toughness

来源：评论

学校读者我要写书评

暂无评论

Characterization and heat transfer model analysis of diamond/copper composite materials prepared by high-temperature lamination

引用

Diamond and Related Materials 2025年 157卷

作者： Su, Zhenhua Han, Kai Ye, Zhijie Zhao, Jiwen Tang, Xiangpeng Pang, Jinzhuo Zhao, Kunlong Cao, Wenxin Zhu, Jiaqi Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou450000 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China Henan Core-diamond Material Technology Co. Ltd Zhengzhou450000 China

Diamond/copper(D/Cu) composites exhibit excellent properties of high thermal conductivity(TC) and low coefficient of thermal expansion(CTE), and thus hold broad application prospects in fields such as aerospace and electronic packaging. In this study, a novel fabrication process for D/Cu composite plate is presented, utilizing tungsten-coated diamond and copper sheets as raw materials. The results show that the TC of the D/Cu composite prepared by the high-temperature laminate process can reach 630.3 W/m·K. In comparison with the D/Cu composite prepared by the traditional hot pressing process, the composite prepared by the high-temperature laminate process exhibits higher smoothness and accuracy. Additionally, the flexural strength of the composite plate is as high as 283.7 MPa. Notably, the TC of the composite plate decreases by only 1 % after 100 thermal shock cycles. The diamond and tungsten carbide within the coating form a highly stable semi-coherent phase boundary. A simplified series-parallel model was employed to calculate the in-plane(xy) and out-of-plane(z) TC of the D/Cu plate. The modified model accurately describes the TC of D/Cu composites with high volume fractions, and the results were validated using finite element analysis. This study is of significant importance for addressing the processing challenges associated with D/Cu composites. © 2025 Elsevier B.V.

关键词： Hot pressing

来源：评论

学校读者我要写书评

暂无评论

Transition-Metal-Doped Biphenylene for Enhanced Co Detection: A High-Throughput First-Principles Study

SSRN

引用

SSRN 2024年

作者： Zhang, Jiao Cui, Li-Ying Xie, Ying Wang, Zhe Zhang, Yan-Chang Yang, Lin Zheng, Bing School of Chemistry and Materials Science Heilongjiang University Harbin150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Center for Composite Materials and Structures Harbin Institute of Technology Harbin150080 China

Our study examines the CO detection capabilities of pristine biphenylene (BP) and transition-metal-doped BP (M-BP), a novel two-dimensional nano-carbon material. Despite BP’s potential in toxic gas detection, its low CO adsorption energy (Eads) of 0.134 eV limits its application. Utilizing a combined strategy of high-throughput computational screening and DFT technique, we accurately identified the ground state configurations of CO-adsorbed M-BP (M = Sc, Ti, Fe, Co, Ni, and Zn) and confirmed M doping significantly boosts BP’s CO adsorption ability, with Eads values ranging from 2.809 to 8.206 eV. This improvement is supported by ab initio molecular dynamics simulations and ionic d-p bonding interactions observed in electron localization functions, densities of state (DOS), and bond population analysis. Additionally, CO adsorption induces notable DOS curve significantly changes in the metallic M-BP systems, validating the potential of M-BP systems as suitable materials for CO detection. Notably, Ti-BP2 and Zn-BP2 show notable work function shifts after CO adsorption (0.41 and 0.36 eV, respectively), outperforming pristine BP’s 0.30 eV shift. These shifts underscore the potential of Ti-BP2 and Zn-BP2 for work function-based CO sensors, marking them as promising materials for sensitive CO detection. © 2024, The Authors. All rights reserved.

关键词： Transition metals

来源：评论

学校读者我要写书评

暂无评论

Realization of flexible in-memory computing in a van der Waals ferroelectric heterostructure tri-gate transistor

引用

Nano Research 2024年第3期17卷 1886-1892页

作者： Xinzhu Gao Quan Chen Qinggang Qin Liang Li Meizhuang Liu Derek Hao Junjie Li Jingbo Li Zhongchang Wang Zuxin Chen School of Semiconductor Science and Technology South China Normal UniversityFoshan 528225China Guangdong Provincial Key Laboratory of Chip and Integration Technology Guangzhou 510631China Institute of Solid State Physics Hefei Institutes of Physical Science Chinese Academy of SciencesHefei 230601China School of Science STEM CollegeRMIT UniversityMelbourne 3000Australia CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Technical Institute of Physics&ChemistryChinese Academy of SciencesUrumqi 830011China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of Optical Science and Engineering Zhejiang UniversityHangzhou 310027China International Iberian Nanotechnology Laboratory(INL) Av.Mestre Jose Veiga s/nBraga 4715-330Portugal

Combining logical function and memory characteristics of transistors is an ideal strategy for enhancing computational efficiency of transistor ***,we rationally design a tri-gate two-dimensional(2D)ferroelectric van der Waals heterostructures device based on copper indium thiophosphate(CuInP_(2)S_(6))and few layers tungsten disulfide(WS_(2)),and demonstrate its multi-functional applications in multi-valued state of data,non-volatile storage,and logic *** co-regulating the input signals across the tri-gate,we show that the device can switch functions flexibly at a low supply voltage of 6 V,giving rise to an ultra-high current switching ratio of 107 and a low subthreshold swing of 53.9 mV/*** findings offer perspectives in designing smart 2D devices with excellent functions based on ferroelectric van der Waals heterostructures.

关键词： two-dimensional(2D)ferroelectric heterostructure tri-gate polymorphic regulation in-memory computing

来源：评论

学校读者我要写书评

暂无评论

Preface:Mechanics of soft materials and lexible structures

引用

Acta Mechanica Sinica 2021年第5期37卷 746-747页

作者： Haibao Lu Shaoxing Qu Xiqiao Feng State Key Laboratory of Science and Technology On Advanced Composites in Special Environments Harbin Institute of TechnologyHarbin 150080P.R.China Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Department of Engineering MechanicsZhejiang UniversityHangzhou 310027China Institute of Biomechanics and Medical Engineering AMLDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084China

Soft materials and lexible structures have become essential and hot topic,which is expected to signiicantly promote the research and development of current mechanics,physics,chemistry and life ***,the soft materials and lexible structures have attracted enthusiastic attentions due to their great potential and practical applications in deployable structures,morphing structures,sensors,actuators,health-monitoring etc.

关键词： Mechanics structures Preface

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：