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Surface Elastic Effects on Electromechanical Responses of a Piezoelectric Semiconducting Nanobeam

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Acta Mechanica Solida Sinica 2024年第4期37卷 598-612页

作者： Aowen Bao xiaobao li Yuxue Pu Chunxiao Zhan School of Civil Engineering Hefei University of TechnologyHefei230009China

Piezoelectric semiconductors(PSCs)find extensive applications in modern smart electronic devices because of their dual properties of being piezoelectric and *** the increasing demand for miniaturization of these devices,the performance of their components needs to be carefully designed and optimized,especially when reduced to *** has been shown that surface elastic properties play a substantial role in the mechanical performance of nanoscale materials and *** on this understanding,the surface elastic effects,encompassing surface residual stress,surface membrane stiffness,and surface bending stiffness,are comprehensively taken into account to explore the electromechanical responses of a PSC ***,the flexoelectric effect on their responses is also systematically *** results of this work reveal that surface elastic properties predominantly influence mechanical performance,while the flexoelectric effect plays a more dominant role in electric-related quantities at the ***,the significance of surface bending rigidity,which was often underestimated in the earlier literature,is ***,owing to the flexoelectric effect,the linear distribution of electric potential and charge carriers along the length transforms into a nonlinear *** distributions of electric potential and charge carriers across the cross section are also evidently ***,the size-dependent responses are *** findings may provide valuable insights for optimizing electronic devices based on nanoscale PSCs.

关键词： Surface elastic effect Flexoelectricity Size effect Piezoelectric semiconductor

ACCELERATED liFE TEST STUDIES OF NEW COATED DISPENSER CATHODES

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Journal of Electronics(China) 2007年第5期24卷 717-720页

作者： Zhang Mingchen Zhang Honglai liu Pukun Su xiaobao li Yutao Institute of Electronics Chinese Academy of Sciences Beijing 100080 China

The life of impregnated Ba-W cathodes with a new construction have been evaluated using an accelerated life test at three different temperatures (1170℃,1130℃,1090℃) and constant current density (2A/cm^2).According to the relationship of life with operating temperatures,an accelerated equation has been set *** cathode life at normal operating temperature is deducted based on the accelerated *** results show that life of the novel cathode exceeds 190,000 hour at a current density of 2A/cm^2.

关键词： Dispenser cathodes Accelerated life test

Grain boundary boosting the thermal stability of Pt/CeO_(2)thin films

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Nano Research 2023年第2期16卷 3278-3286页

作者： Luyao Wang xiaobao li Xiangchen Hu Shuyue Chen Zhehao Qiu Yifan Wang Hui Zhang Yi Yu Bo Yang Yong Yang Pasquale Orgiani Carmela Aruta Nan Yang Electrochemical thin film group School of physical science and technologyShanghaiTech UniversityShanghai 201210China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of physical science and technology ShanghaiTech UniversityShanghai 201210China CNR-IOM TASC National LaboratoryI-34149 TriesteItaly CNR-SPIN UOS RomaArea della Ricerca di Tor VergataRome I-00133Italy

Understanding how defect chemistry of oxide material influences the thermal stability of noble metal dopant ions plays an important role in designing high-performance heterogeneous catalytic *** we use in-situ ambient-pressure X-ray photoemission spectroscopy(APXPS)to experimentally determine the role of grain boundary in the thermal stability of platinum doped cerium oxide(Pt/CeO_(2)).The grain boundaries were introduced in Pt/CeO_(2)thin films by pulsed laser deposition without significantly change of the surface *** defect level was tuned by the strain field obtained using a highly/low mismatched *** Pt/CeO_(2)thin film models having well defined crystallographic properties but different grain boundary structural defect levels provide an ideal platform for exploring the evolution of Pt–O–Ce bond with changing the temperature in reducing *** have direct demonstration and explanation of the role of Ce^(3+)induced by grain boundaries in enhancing Pt2+*** observe that the Pt^(2+)–O–Ce^(3+)bond provides an ideal coordinated site for anchoring of Pt^(2+)ions and limits the further formation of oxygen vacancies during the reduction with H_(2).Our findings demonstrate the importance of grain boundary in the atomic-scale design of thermally stable catalytic active sites.

关键词： platinum doped cerium oxide(Pt/CeO_(2)) pulsed laser deposition epitaxial thin films grain boundaries defect engineering in-situ ambient-pressure X-ray photoemission spectroscopy

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缺失与构建:大学生诚信教育的思考

中国青年研究 2006年第5期 71-73页

作者：李小豹团中央学校部

加强大学生诚信教育,对于全面推进素质教育,培养高素质人才具有重要意义。诚信教育要树立大教育观,采用灵活多样的教育方式和方法,逐步建立和完善诚信管理和评价机制,使学生达到诚信道德内化。

关键词：大学生诚信教育缺失构建

On the Behavior of Positive Solutions of a Difference Equations System xn+1={yn-2+yn-3}/xn, yn+1={xn-2+xn-3}/yn

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Applied Mathematics 2013年第9期4卷 13-18页

作者： Decun Zhang Wenqiang Ji liying Wang xiaobao li Institute of Systems Science and Mathematics Naval Aeronautical and Astronautical University Yantai Yantai China

Motivated by an open problem in the literature “Dynamics of Second Order Rational Difference Equations with Open Problems and Conjecture”, we introduce a difference equation system: xn+1={yn-2+yn-3}/xn, yn+1={xn-2+xn-3}/yn , n=o, 1 ...* Where xi, yi ∈(0, ∞), i=-3, -2, -1, 0. We try to find out some conditions such that the solution of system converges to periodic solution. This model can be applied to the two species competition and population biology.

关键词： Difference Equation System Monotonicity Periodicity Oscillatory

On the Symmetrical System of Rational Difference Equation xn+1=A+yn-k/yn, yn+1=A+xn-k/xn

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Applied Mathematics 2013年第5期4卷 834-837页

作者： Decun Zhang Wenqiang Ji liying Wang xiaobao li Institute of Systems Science and Mathematics Naval Aeronautical and Astronautical University Yantai China

In this paper, we study the behavior of the symmetrical system of rational difference equation: where A > o and xi, yi ∈(0, ∞), for i= -k,-k+1,…,0.

关键词： Symmetrical System Difference Equation Boundedness Period-Two Solution

平衡时间洞察力与心理健康的关系:情绪调节策略的中介作用

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心理科学 2024年第3期47卷 562-569页

作者：李小保吕厚超西南大学心理学部时间心理学研究中心重庆400715

基于1432名被试(M=29.04岁,SD=14.38岁),本研究旨在探究平衡时间洞察力与心理健康的关系,并检验情绪调节策略的中介效应。结果发现:(1)平衡时间洞察力与生活满意度、积极情感正相关,与消极情绪、焦虑负相关。(2)平衡时间洞察力与认知重... 详细信息

基于1432名被试(M=29.04岁,SD=14.38岁),本研究旨在探究平衡时间洞察力与心理健康的关系,并检验情绪调节策略的中介效应。结果发现:(1)平衡时间洞察力与生活满意度、积极情感正相关,与消极情绪、焦虑负相关。(2)平衡时间洞察力与认知重评正相关,与表达抑制负相关。认知重评与生活满意度、积极情绪呈正相关,与焦虑、消极情绪呈负相关;表达抑制与消极情绪、焦虑呈正相关。(3)认知重评、表达抑制在平衡时间洞察力与总体心理健康之间起部分中介作用。研究结果强调了平衡时间洞察力对人们的情绪调节和心理健康的重要意义,并给出了培养和构建平衡时间洞察力的建议。

关键词：时间洞察力平衡时间洞察力心理健康情绪调节策略

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从社会学角度看大学生社会化问题

思想教育研究 2009年第7期 87-89页

作者：李小豹中南大学政治学与行政管理学院湖南长沙410083

大学生社会化是大学生不断融入社会、适应社会、服务社会的过程。大学生社会化的内容和方式具有自我选择性,其影响因素具有广泛性,其过程具有复杂性和不完全性。大学生社会化过程中容易出现社会化不足、社会化过度、价值观异化等问题。... 详细信息

大学生社会化是大学生不断融入社会、适应社会、服务社会的过程。大学生社会化的内容和方式具有自我选择性,其影响因素具有广泛性,其过程具有复杂性和不完全性。大学生社会化过程中容易出现社会化不足、社会化过度、价值观异化等问题。高校应当坚持以人为本,切实加强大学生社会化教育。

关键词：大学生社会化思想政治教育

青少年时间态度与学业拖延的关系:成就动机的中介作用

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心理科学 2022年第1期45卷 47-53页

作者：李小保吕厚超西南大学心理学部时间心理学研究中心重庆400715

采用青少年时间态度量表、成就动机量表和学业拖延问卷,对733名中学生进行调查,旨在探究时间态度与学业拖延的关系,揭示成就动机在其间的中介机制。结果发现:(1)过去消极、现在消极和未来消极与学业拖延呈正相关,过去积极、现在积极和... 详细信息

采用青少年时间态度量表、成就动机量表和学业拖延问卷,对733名中学生进行调查,旨在探究时间态度与学业拖延的关系,揭示成就动机在其间的中介机制。结果发现:(1)过去消极、现在消极和未来消极与学业拖延呈正相关,过去积极、现在积极和未来积极与学业拖延呈负相关。(2)过去消极、现在消极和未来消极与成就动机呈负相关,过去积极、现在积极和未来积极与成就动机呈正相关;成就动机与学业拖延呈负相关。(3)成就动机在现在消极与学业拖延之间起部分中介作用,在未来积极、未来消极与学业拖延之间起完全中介作用。

关键词：青少年时间态度学业拖延成就动机