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Tunable antiferroelectric-like polarization behavior and enhanced energy storage characteristics in symmetric BaTiO_(3)/BiFeO_(3)/BaTiO_(3) heterostructure

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Journal of Materiomics 2024年第6期10卷 1290-1298页

作者： Ying Wang Hanfei Zhu Hongyu Luo Jianting Li Yu Huan Yuyao Zhao Li Li Hongbo Cheng Chao Liu Qingguo chi Jun Ouyang School of Chemistry and Chemical engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China School of Mechanical engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China Key Laboratory of engineering Dielectrics and Its Application(Ministry of Education) Harbin University of Science and TechnologyHarbin150080China School of Material science and engineering University of JinanJinan250022China State Key Laboratory of Metal Matrix Composites School of Material Sciences and EngineeringShanghai Jiao Tong UniversityShanghai200240China Key Laboratory of Key Film materials&Application for Equipments(Hunan Province) Hunan Provincial Key Laboratory of Thin Film Materials and DevicesSchool of Material Sciences and EngineeringXiangtan UniversityXiangtan411105China

The excellent energy storage performances of dielectric materials,a high energy density and efficiency,the stability in a wide range of temperature,frequency and cycling time,are surely desirable for the energy storage devices.A trade-off relationship between polarization and breakdown strength,however,limits the enhancement of energy storage properties of dielectric *** effectively boost the energy density and efficiency of dielectric capacitors,by inserting a BiFeO3 layer into the BaTiO3 film in present case,the symmetric BaTiO3/BiFeO3/BaTiO3 tri-layer film heterostructure with antiferroelectric-like characteristics was constructed based on the dual-interlayer coupling effect,what's more,its antiferroelectric-like characteristics will evolve with electric *** the tunable polarization behavior endows it with an enhanced maximum polarization but a reduced remnant one,a delayed saturation of polarization and a high breakdown strength,which are synergistically accountable for a large energy density(Wrec∼109 J/cm^(3))and a high efficiency(η∼82.6%),together with the good thermal(TR∼200℃,ΔWrecching the performance tuning of ferroelectrics,especially in enhancing their energy storage characteristics.

关键词： Antiferroelectric-like Tri-layer film heterostructure Tunable polarization behavior Interlayer coupling Energy storage

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Fabrication of gelatin-hyaluronic acid hybrid scaffolds with tunable porous structures for soft tissue engineering

Fabrication of gelatin-hyaluronic acid hybrid scaffolds with...

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生物材料与再生医学的现状与未来——2010年第十届上海地区医用生物材料研讨会

作者： Fan Zhang~2,Chuanglong He~(1,2,3*),Lijun Cao~2,Wei Feng~2,Hongsheng Wang~2,Xiumei Mo~(1,2,3) Jinwu Wang~(4*) 1 Key Laboratory of Textile science & Technology,Ministry of Education,Donghua university,shanghai,P.R. china 201620 2 College of Chemistry,Chemical engineering and Biotechnology,Donghua university,shanghai,P.R.china 201620 3 State Key Laboratory for Modification of Chemical Fibers and Polymer materials,Donghua university, shanghai,P.R.china 201620 4 department of Orthopaedic Surgery,Ninth People’s Hospital,shanghai jiao tong university School of Medicine, shanghai,P.R.china 200011

The development of three -dimensional(3 -D) scaffolds with highly open porous structure is one of the most important issues in tissue *** this study,3-D macroporous gelatin/hyaluronic acid(GE/HA) hybrid scaffolds with varying porous morphology were prepared by freeze -drying their blending solutions and subsequent chemical crosslinking by using 1 -Ethyl -3 -(3 -dimethylaminopropyl) carbodiimide hydrochloride (EDC).The resulting scaffolds were characterized by scanning electron microscopy(SEM) and Fourier transform infrared spectroscopy(FTIR).Their swelling,in vitro degradation properties and compressive strength were also *** evaluate in vitro cytocompatibility of scaffolds,mouse L929 fibroblasts were seeded onto the scaffolds for cell morphology and cell viability *** was found that the porous structure of scaffolds can be tailored by varying the ratios of gelatin to HA,both the swelling ratios and degradation rate increased with the increase of HA content in hybrid scaffolds,and crosslinking the scaffolds with EDC improved the degradation resistance of the scaffold in culture media and increased the mechanical strength of *** in vitro results revealed that the prepared scaffolds do not induce cytotoxic effects and suitable for cell growth,especially in the case of scaffolds with higher gelatin *** combined results of the physicochemical and biological studies suggested that the developed GE/HA hybrid scaffolds exhibit good potential and biocompatibility for soft tissue engineering applications.

关键词： Gelatin Hyaluronic acid Porous scaffold Freeze-drying Tissue engineering

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Designing High-Porosity Porous Structures with Complex Geometries for Enhanced Thermal Conductivity Using Selective Laser Melting and Heat Treatment

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Acta Metallurgica Sinica(English Letters) 2024年第5期37卷 808-824页

作者： Hulin Tang Xiang Zhang Chenping Zhang Tian zhou Shiyue Guo Gaopeng Xu Rusheng Zhao Boyoung Hur Xuezheng Yue School of materials science and engineering University of Shanghai for Science and TechnologyShanghai 200082China National Center for Stomatology National Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyDepartment of Oral Maxillofacial-Head and Neck OncologyShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityShanghai 200011China Longzhong Lab Wuhan of Science and TechnologyYancheng 224000China Tokyo Metropolitan university TokyoJapan Gyeongsang National university JinjuKorea

Rapid advancements in the aerospace industry necessitate the development of unified,lightweight and thermally conductive *** complex geometries,including bionic and porous structures,is paramount in thermally conductive structures to attain improved thermal *** design of two high-porosity porous lattice structures was inspired by pomelo peel structure,using Voronoi parametric *** combining characteristic elements of two high-porostructuressity porous lattice structures designed,a novel high-porosity porous gradient structure is *** structure is based on gradient *** selective laser melting(SLM),fabrication comprises ***-state thermal characteristics are evaluated via finite element analysis(FEA).The experimental thermal conductivity measurements correlate well with simulation results,validating the sequence of K_L as the highest,followed by D_K_L and then D_*** treatment significantly improves thermal conductivity,enhancing the base material by about 45.6%and porous structured samples by approximately 43.7%.

关键词： Selective laser melting Porous lattice structure Thermal conductivity Heat treatment

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Al-20%Cu多晶粒竞争生长的原位观测及汇聚型枝晶淘汰模型构建

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Transactions of Nonferrous Metals Society of china 2024年第7期34卷 2095-2107页

作者：李发国周莲谢玉张佼 Mike DODGE 尹付成孙宝德湘潭大学材料科学与工程学院湖南省材料设计与制备技术重点实验室湘潭411105 宝山钢铁有限公司中央研究院上海201900 上海交通大学材料科学与工程学院上海200240 TWI Ltd Granta ParkGreat AbingtonCambridge CB216ALUK

采用同步辐射成像技术研究Al-20%Cu(质量分数)亚共晶合金的晶粒竞争生长动力学,并建立与实验结果相一致的数学模型。结果表明,对于发散型竞争生长,遵循“正常淘汰”规则。对于汇聚型竞争生长,成分过冷的作用加速非择优取向晶粒中一次枝... 详细信息

采用同步辐射成像技术研究Al-20%Cu(质量分数)亚共晶合金的晶粒竞争生长动力学,并建立与实验结果相一致的数学模型。结果表明,对于发散型竞争生长,遵循“正常淘汰”规则。对于汇聚型竞争生长,成分过冷的作用加速非择优取向晶粒中一次枝晶臂的生长速度,导致非择优取向枝晶出现“异常淘汰”现象,淘汰择优取向枝晶。探讨汇聚型竞争生长的“正常淘汰”与“异常淘汰”之间的临界条件,建立枝晶生长速率、枝晶臂间距和枝晶倾斜角之间的数学关系,又称“二次枝晶臂阻挡模型”,可以快速预测晶界位相和淘汰类型。

关键词：竞争生长同步辐射成像定向凝固数学模型 Al-Cu合金

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Biomaterials-based anti-inflammatory treatment strategies for Alzheimer's disease

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Neural Regeneration Research 2024年第1期19卷 100-115页

作者： Jianjian Chu Weicong Zhang Yan Liu Baofeng Gong Wenbo Ji tong Yin Chao Gao Danqi Liangwen Mengqi Hao Cuimin Chen Jianhua Zhuang Jie Gao You Yin department of Neurology Second Affiliated Hospital(Shanghai Changzheng Hospital)of Naval Medical UniversityShanghaiChina School of Pharmacy University College LondonLondonUK department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineClinical Pharmacy Innovation InstituteShanghai Jiao Tong University School of MedicineShanghaiChina School of Health science and engineering University of Shanghai for Science and TechnologyShanghaiChina Changhai Clinical Research Unit Shanghai Changhai HospitalNaval Medical UniversityShanghaiChina

The current therapeutic drugs for Alzheimer's disease only improve symptoms,they do not delay disease *** re,there is an urgent need for new effective *** underlying pathogenic factors of Alzheimer's disease are not clear,but neuroinflammation can link various hypotheses of Alzheimer's disease;hence,targeting neuroinflammation may be a new hope for Alzheimer's disease *** inflammation can restore neuronal function,promote neuro regeneration,reduce the pathological burden of Alzheimer's disease,and improve or even reverse symptoms of Alzheimer's *** review focuses on the relationship between inflammation and various pathological hypotheses of Alzheimer's disease;reports the mechanisms and characteristics of small-molecule drugs(e.g.,nonsteroidal anti-inflammatory drugs,neurosteroids,and plant extracts);macromolecule drugs(e.g.,peptides,proteins,and gene therapeutics);and nanocarriers(e.g.,lipid-based nanoparticles,polymeric nanoparticles,nanoemulsions,and inorganic nanoparticles)in the treatment of Alzheimer's *** review also makes recommendations for the prospective development of anti-inflammatory strategies based on nanocarriers for the treatment of Alzheimer's disease.

关键词： Alzheimer's disease anti-inflammation blood-brain barrier drug delivery microglia nanoparticles neuroinflammation plant extracts

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注射模冷却时间分析

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高分子材料科学与工程 1987年第6期 55-62页

作者：胡涵彬曾宪章杨筑萌上海交通大学材料科学及工程系

本文从传热学出发,根据注射模生产实际情况和给出的初始条件、边界条件,导出平板、柱体和球体形塑件的冷却计算公式,对合理安排生产工艺提供了理论依据。

关键词：冷却时间计算式塑料聚合物塑件注射模热稳定性热变形温度模温导热方程

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Enriched electrophilic oxygen species facilitate acidic oxygen evolution on Ru-Mo binary oxide catalysts

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Nano Research 2024年第3期17卷 1165-1172页

作者： Yaya Wang Yunzhou Wen Yumeng Cheng Xinhong Chen Mengjiao Zhuansun tongbao Wang Jun Li Debora Meira Huarui Sun Jun Wei Jia zhou Yuhang Wang Sisi He Shenzhen Key Laboratory of Flexible Printed Electronics Technology Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China School of science Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China Institute of Functional Nano&Soft materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123China Frontiers science Center for Transformative Molecules Shanghai Jiao Tong UniversityShanghai 200240China science Division Canadian Light SourceSaskatoonSKS7N 2V3Canada Photon science Division Argonne National LaboratoryLemontIL60439USA School of materials science and engineering Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China

The polymer electrolyte membrane(PEM)electrolyzers are burdened with costly iridium(Ir)-based catalysts and high operation overpotentials for the oxygen evolution reaction(OER).The development of earth-abundant,highly active,and durable electrocatalysts to replace Ir is a critical step in reducing the cost of green hydrogen *** we develop a Ru5Mo4Ox binary oxide catalyst that exhibits high activity and stability in acidic *** electron-withdrawing property of Mo enriches the electrophilic surface oxygen species,which promotes acidic OER to proceed via the adsorbate evolution *** a result,we achieve a 189 mV overpotential at 10 mA·cm^(-2) and a Tafel slope of 48.8 mV·dec^(-1).Our catalyst demonstrates a substantial 18-fold increase in intrinsic activity,as evaluated by turnover frequency,compared to commercially available RuO_(2) and IrO_(2) ***,we report a stable OER operation at 10 mA·cm^(-2) for 100 h with a low degradation rate of 2.05 mV·h^(-1).

关键词： electrocatalysis oxygen evolution reaction(OER) ruthenium(Ru)-based oxide molybdenum electrophilic oxygen

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Nanomaterials-mediated lysosomal regulation:a robust protein-clearance approach for the treatment of Alzheimer’s disease

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Neural Regeneration Research 2025年第2期20卷 424-439页

作者： Mengqi Hao Jianjian Chu Tinglin Zhang tong Yin Yuankai Gu Wendanqi Liang Wenbo Ji Jianhua Zhuang Yan Liu Jie Gao You Yin department of Neurology Second Affiliated Hospital of Naval Medical University(Shanghai Changzheng Hospital)ShanghaiChina School of Health science and engineering University of Shanghai for Science and TechnologyShanghaiChina Changhai Clinical Research Unit Shanghai Changhai HospitalNaval Medical UniversityShanghaiChina department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghaiChina department of Neurology Shanghai East HospitalSchool of MedicineTongji UniversityShanghaiChina

Alzheimer’s disease is a debilitating,progressive neurodegenerative disorder characterized by the progressive accumulation of abnormal proteins,including amyloid plaques and intracellular tau tangles,primarily within the ***,crucial intracellular organelles responsible for protein degradation,play a key role in maintaining cellular *** studies have suggested a link between the dysregulation of the lysosomal system and pathogenesis of neurodegenerative diseases,including Alzheimer’s *** the normal physiological function of lysosomes hold the potential to reduce the pathological burden and improve the symptoms of Alzheimer’s ***,the efficacy of drugs in treating Alzheimer’s disease is limited,with major challenges in drug delivery efficiency and ***,nanomaterials have gained widespread use in Alzheimer’s disease drug research owing to their favorable physical and chemical *** review aims to provide a comprehensive overview of recent advances in using nanomaterials(polymeric nanomaterials,nanoemulsions,and carbon-based nanomaterials)to enhance lysosomal function in treating Alzheimer’s *** review also explores new concepts and potential therapeutic strategies for Alzheimer’s disease through the integration of nanomaterials and modulation of lysosomal *** conclusion,this review emphasizes the potential of nanomaterials in modulating lysosomal function to improve the pathological features of Alzheimer’s *** application of nanotechnology to the development of Alzheimer’s disease drugs brings new ideas and approaches for future treatment of this disease.

关键词： Alzheimer’s disease autophagy dysfunction lysosomal acidification lysosomal system nanomaterials neurodegenerative diseases

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微波法制备碳纳米材料的机理及进展

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材料导报 2024年第3期38卷 1-6页

作者：王加悦周涵上海交通大学材料科学与工程学院金属基复合材料国家重点实验室上海200240

微波法具有加热快速、易于控制、反应均匀等优点,是制备功能性碳纳米材料的重要技术。其制备原理是基于碳基材料优异的本征介电性能,碳基材料与微波电磁场相互作用产生介电损耗,快速形成局部高能场,实现高速制备。本文首先简要介绍了微... 详细信息

微波法具有加热快速、易于控制、反应均匀等优点,是制备功能性碳纳米材料的重要技术。其制备原理是基于碳基材料优异的本征介电性能,碳基材料与微波电磁场相互作用产生介电损耗,快速形成局部高能场,实现高速制备。本文首先简要介绍了微波与物质的相互作用机理,然后分别从微波在制备过程中的作用、关键实验参数以及微波制备的碳材料的特征等方面详细介绍了微波作为能量输入制备一维碳纳米管、二维石墨烯以及三维纳米多孔碳的优势,最后对宏量快速制备多功能和高性能碳纳米材料的发展进行了展望。

关键词：微波法碳纳米材料碳纳米管石墨烯多孔碳

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MCM-41 Single Crystal of Hexagonal Circular Bicone with Pseudo-Singular Surface and Morphogenesis

MCM-41 Single Crystal of Hexagonal Circular Bicone with Pseu...

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11th Conference on Solid State Chemistry and Inorganic Synthesis Joint with 2th Dalton Transactions International Symposium

作者： Juanjuan Qi~(ab),Haiming Nan~a,Qiang Cai~(a,*),Dongyao Xu~b, Hengde Li~a a department of materials science and engineering, Tsinghua university,Beijing 100084,P.R.china b School of Chemical & Environmental engineering, china university of Mining and Technology(Beijing),Beijing 100083,P.R.china

In this paper,a novel crystal form of hexagonal circular bicone of MCM-41 crystal(Fig.1a～1e,1f) which is the combination forms of hexagonal bipyramid form and circular bicone form that has never been defined in tradi... 详细信息

关键词： MCM-41 Single Crystal of Hexagonal Circular Bicone with Pseudo-Singular Surface and Morphogenesis

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