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Electric modulation of conduction in MAPbBr_(3) single crystals

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Journal of Advanced Ceramics 2021年第2期10卷 320-327页

作者： Shanming Ke Shangyu Luo Jinhui Gong Liwen Qiu renhong liang Yangbo Zhou Bingcheng Luo Baochang Cheng Li Wang Longlong Shu School of Materials Science and Engineering Nanchang UniversityNanchang330031China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an710072China

The resistive switching(RS)mechanism of hybrid organic–inorganic perovskites has not been clearly understood until now.A switchable diode-like RS behavior in MAPbBr3 single crystals using Au(or Pt)symmetric electrodes is *** the high resistance state(HRS)and low resistance state(LRS)are electrode-area dependent and light *** propose an electric-fielddriven inner p–n junction accompanied by a trap-controlled space-charge-limited conduction(SCLC)conduction mechanism to explain this switchable diode-like RS behavior in MAPbBr_(3) single crystals.

关键词： resistive switching(RS) rectifying behavior hybrid organic–inorganic perovskites p–n structure

Modulating low-frequency tribocatalytic performance through defects in uni-doped and bi-doped SrTiO_(3)

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Journal of Advanced Ceramics 2024年第8期13卷 1153-1163页

作者： Yjing Xu Yingzhi Meng Xu Xiang Qing Tang Hongfang Zhang Lajun Liu Ju Gao Bo Xu renhong liang Longlong Shu Yanmin Jia Wanping Chen School of Physical Science and Technology Suzhou University of Science and TechnologySuzhou 215009China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004China Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China Suzhou University of Science and TechnologySuzhou 215009China School of Science and Key Laboratory of Biomedical Functional Materials China Pharmaceutical UniversityNanjing 211198China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China School of Physics and Materials Science Nanchang UniversityNanchang 330031China School of Physics and Information Technology Shaanxi Normal UniversityXi'an 710062China School of Physics and Technology Wuhan UniversityWuhan 430072China

Triboelectrification,a process that transforms mechanical energy into electrical energy through friction,holds promise for eco-friendly wastewater *** study delves into the enhancement of tribocatalytic dye degradation using SrTiO_(3),a material notable for its non-piezoelectric and centrosymmetric *** synthesis of uni-and bi-doped SrTiOs particles,achieved through a solid-state reaction at 100℃,results in a high-purity cubic perovskite *** with rhodium(Rh)and carbon(C)causes crystal lattice contraction,internal stress,and significant oxygen *** changes notably improve tribocatalytic efficiency under solar irradiation,with Rh-doped SrTiO_(3) demonstrating an impressive degradation rate of approximately 88% for Rhodamine B(RhB),along with reaction rate constants near 0.9 h^(-1) at 554 nm and a noticeable *** study highlights that defects introduced by doping are integral to this process,boosting catalytic activity through energy state modification and enhancing surface redox radical ***,these defects are instrumental in generating a flexoelectric field,which markedly influences the separation of electron-hole pairs under solar *** findings illuminate the complex interplay between material composition,defect states,and environmental conditions,paving the way for advanced strategies in environmental remediation through optimized tribocatalytic activity.

关键词： tribocatalysis SrTiO_(3)(STO) doping-induced defects blueshift flexoelectric field

Inhibiting oxygen vacancies and twisting NbO_(6) octahedron in erbium modified KNN-based multifunctional ceramics

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Journal of Materiomics 2024年第1期10卷 179-189页

作者： Lulu Gao Zhiyong Liu Pengrong Ren renhong liang Ting Li Kun Guo Bing Xie Jinshan Lu Pu Mao Jun Tian Longlong Shu School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang330063China School of Materials Science and Engineering Xi'an University of TechnologyXi'an710048China School of Physics and Materials Science Nanchang UniversityNanchang330031China Institute of Applied Chemistry Jiangxi Academy of SciencesNanchang330096China

It is a challenge to obtain highly tunable multifunctional performances in one ferroelectric system by a simple approach to meet the miniaturization,integration,and functionalization requirements of advanced electronic ***,rare earth erbium(Er)modulated 0.9K_(0.5)Na_(0.5)NbO_(3)-0.1Sr(1-x)Er_(x)Ti_((1-x/4))O_(3),(0.9KNN-0.1ST:xEr)transparent-photoluminescent-ferroelectric energy storage multifunctional ceramics are prepared to solve this *** effect of lattice distortion and oxygen vacancies by Er doping on the optical and electrical properties is systematically *** Er^(3+)ions can introduce a large distortion of the NbO_(6) octahedron by replacing the A-site in KNN-based *** to the higher c/a ratio and lower oxygen vacancy content are simultaneously obtained in 0.9KNN-0.1ST:0.1Er *** effective energy storage density(Wrec)of 0.86 J/cm^(3),excellent near-infrared transmittance of 51.7%(1100 nm)and strong green upconversion photoluminescence are achieved in this multifunctional *** study provides a solid basis for rare earth ions doped ferroelectric ceramics with tunable multifunctional properties and has significant potential for applications in optoelectronic devices.

关键词： KNN Upconversion photoluminescence Multifunctional ceramics Oxygen vacancy Octahedron

Flexoelectricity in oxide thin films

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Journal of Advanced Dielectrics 2024年第1期14卷 1-24页

作者： Guoyang Shen renhong liang Zhiguo Wang Zhiyong Liu Longlong Shu School of Physics and Materials Science Nanchang University Nanchang 330031 P.R.China School of Materials Science and Engineering Nanchang Hangkong University Nanchang 330063P.R.China

Flexoelectric effect describes the electromechanical coupling between the strain gradient and its internal polarization in all *** this universality,the resulting flexoelectric field remains small at the macroscopic ***,in nanosystems,the size-dependent effect of flexoelectricity becomes increasingly significant,leading to a notable flexoelectric field that can strongly influence the material’s physical *** review aims to explore the flexoelectric effect specifically at the *** achieve this by examining strain gradients generated through two distinct methods:internal inhomogeneous strain and external *** addition,advanced synthesis techniques are utilized to enhance the properties and functionalities associated with ***,we delve into other coupled phenomena observed in thin films,including the coupling and utilization of flexomagnetic and flexophotovoltaic *** review presents the latest advancements in these areas and highlights their role in driving further breakthroughs in the field of flexoelectricity.

关键词： Flexoelectric effect strain gradient polarization nano-thin film flexomagnetic flexophotovoltaic

交通运输发展水平评价指标体系构建及优化研究

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综合运输 2021年第3期43卷 32-37页

作者：梁仁鸿交通运输部科学研究院北京100029

交通运输业是经济社会实现快速发展的重要保障,是实现国家和区域可持续发展的必要基础,承担着推动经济社会实现高质量发展的历史使命。本文介绍了交通运输发展的内涵,结合建成小康社会、生态文明建设、交通强国建设等战略目标对交通运... 详细信息

交通运输业是经济社会实现快速发展的重要保障,是实现国家和区域可持续发展的必要基础,承担着推动经济社会实现高质量发展的历史使命。本文介绍了交通运输发展的内涵,结合建成小康社会、生态文明建设、交通强国建设等战略目标对交通运输发展总体要求,对评价指标体系进行了初步构建。在此基础上对初选评价指标体系进行了"四个检验",同时运用变异系数、相关系数等方法进行了评价指标体系的优化调整。本文所研究构建的评价指标体系及优化调整方法可为行业管理部门开展相关工作、制定相关政策提供参考。

关键词：交通运输指标体系检验优化相关系数交通强国

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我国公铁联运发展关键问题及对策研究

综合运输 2017年第8期39卷 7-12页

作者：梁仁鸿交通运输部科学研究院北京100029

发展公铁联运有利于整合公路、铁路和社会资源,建立全国公路铁路大型联合物流网络,建成全国联网公铁联运大物流体系。本文介绍了公铁联运的概念、内涵并系统梳理了国内公铁联运发展的政策、法律法规环境及联运业务的开展现状,在此基础... 详细信息

发展公铁联运有利于整合公路、铁路和社会资源,建立全国公路铁路大型联合物流网络,建成全国联网公铁联运大物流体系。本文介绍了公铁联运的概念、内涵并系统梳理了国内公铁联运发展的政策、法律法规环境及联运业务的开展现状,在此基础上分析了推进公铁联运的必要性和可行性,指出了发展公铁联运的关键问题。根据公铁联运发展现状及关键问题,研究并提出了推进公路联运的对策建议。

关键词：公铁联运,运输组织服务模式联运经营人供给结构

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厦门市城市货运配送发展分析及措施建议

综合运输 2018年第10期40卷 101-105页

作者：梁仁鸿交通运输部科学研究院

随着国家“一带一路”战略的实施及海峡西岸经济区的建设，地区间的经济活动往来将更加频繁，对城市货运发展水平提出了更高的要求。为解决城市交通拥挤、防治环境污染、提高物流资源利用率，实现城市货运配送健康稳定发展，深入研究分... 详细信息

随着国家“一带一路”战略的实施及海峡西岸经济区的建设，地区间的经济活动往来将更加频繁，对城市货运发展水平提出了更高的要求。为解决城市交通拥挤、防治环境污染、提高物流资源利用率，实现城市货运配送健康稳定发展，深入研究分析厦门市城市货运配送发展现状及问题意义重大。本文介绍了厦门市城市货运配送车辆、配送模式及市场主体发展现状，测算了城市配送总量及主要货类需求量，探讨了城市货运配送发展面临的形势并分析了厦门市城市货运配送发展存在的问题。最后根据厦门市城市货运配送发展现状及存在的问题，研究并提出了推进城市货运配送发展的对策建议。

关键词：城市配送配送需求物流水平服务体系

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石河子公共交通发展现状、问题及对策分析

综合运输 2018年第5期40卷 101-106页

作者：梁仁鸿刘颖龚露阳交通运输部科学研究院

国民经济的持续增长必将带来居民出行需求的快速增长,安全可靠、经济高效、便捷舒适乃至个性化的出行需求不断增强。大力发展城市公共交通,吸引更多的市民来乘坐公共交通出行,是缓解城市交通拥堵公认的重要举措,因此必须加快推进城市公... 详细信息

国民经济的持续增长必将带来居民出行需求的快速增长,安全可靠、经济高效、便捷舒适乃至个性化的出行需求不断增强。大力发展城市公共交通,吸引更多的市民来乘坐公共交通出行,是缓解城市交通拥堵公认的重要举措,因此必须加快推进城市公共交通优先发展,不断提高城市公共交通的服务能力、服务质量和服务效率,以满足经济社会快速发展和人民群众日益增长的交通需求。本文介绍了石河子市公共交通企业、线网及场站发展现状,分析了公共交通需求,探讨了公共交通发展存在的主要问题,并针对现状和问题提出了对策。

关键词：公共交通完善方案出行条件运输服务价格体系

上饶市公共交通发展现状、问题分析及对策研究

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综合运输 2018年第4期40卷 101-105页

作者：梁仁鸿汪健姜景玲孙杨交通运输部科学研究院

城市公共交通是关系社会民生的社会公共服务事业，发展城市公共交通有利于引导城市可持续发展。随着上饶市经济实力不断壮大，人民生活水平El益改善，上饶市机动化水平不断提高。为更好地满足上饶市人民群众出行需求，缓解城市交通拥堵... 详细信息

城市公共交通是关系社会民生的社会公共服务事业，发展城市公共交通有利于引导城市可持续发展。随着上饶市经济实力不断壮大，人民生活水平El益改善，上饶市机动化水平不断提高。为更好地满足上饶市人民群众出行需求，缓解城市交通拥堵、出行难等问题，实现城市公共交通健康稳定发展，深入研究分析上饶市城市公共交通发展现状及问题意义重大。本文介绍了上饶市公共交通线网、场站及政策环境发展现状，探讨了公共交通发展的战略定位及思路并系统梳理了上饶市公共交通发展需要重点关注的问题。最后根据上饶市公共交通发展现状及重点关注的问题，研究并提出了推进公共交通发展的对策建议。

关键词：公共交通居民出行分担率服务体系