检索结果-内蒙古大学图书馆

All-optical logic gates based on hierarchical photonic crystal modulated photoluminescence of perovskite nanocrystals

引用

science China(Technological sciences) 2023年第9期66卷 2735-2742页

作者： WANG Yun ZHA YanFang YANG YunYi LIU CiHui DI YunSong CAO GuiYuan WEI ShiBiao CHEN ZhiHui GAN ZhiXing Center for Future Optoelectronic Functional Materials School of Computer and Electronic InformationSchool of Artificial IntelligenceNanjing Normal UniversityNanjing 210023China Centre for Translational Atomaterials School of ScienceSwinburne University of TechnologyHawthorn VIC 3122Australia Nanophotonics Research Center Shenzhen Key Laboratory of Micro-Scale Optical Information TechnologyShenzhen UniversityShenzhen 518060China Key Laboratory of Advanced Transducers and Intelligent Control Systems Ministry of Education and Shanxi ProvinceCollege of Electronic Information and Optical EngineeringTaiyuan University of TechnologyTaiyuan 030024China

Halide perovskites exhibit high performance in all sorts of optoelectronic and photonic areas, suggesting their huge potential in integrated photonic devices. However, until now, all optical logic gates based on perovskites are still rarely explored, hindering the development of all-optical networks and computing. Herein, a new concept of all-optical logic gates is proposed based on the modulation of photoluminescence(PL) from perovskite nanocrystals(PNCs). A hierarchical photonic crystal(Hie PhC) is developed by self-assembling polystyrene(PS) and SiO2nanoparticles, which exhibit a higher PL enhancement than that of a monolayer PhC. Moreover, the light-controlled PL is realized by taking advantage of the high thermal response of the PL from PNCs/Hie PhC on polyethylene(PE) substrate, assisted by a graphene layer for light-heat conversion. Consequently, optical diode and triode are achieved based on the modulated PL, which exhibit contrast ratios(CR) of 24.7 and 74.0 dB, ***-optical logic gates, including “AND”, “OR” and “NOT”, are realized based on the optical diode and triode.

关键词： perovskite nanocrystals photonic crystals all-optical logic gates modulation of photoluminescence

来源：评论

学校读者我要写书评

暂无评论

Multi-functional layered double hydroxides supported by nanoporous gold toward overall hydrazine splitting

引用

Frontiers of Chemical science and Engineering 2024年第1期18卷 61-69页

作者： Yongji Qin Huijie Cao Qian Liu Shaoqing Yang Xincai Feng Hao Wang Meiling Lian Dongxing Zhang Hua Wang Jun Luo Xijun Liu ShenSi Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of ChinaShenzhen 518110China Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured MaterialsSchool of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Institute for Advanced Study Chengdu UniversityChengdu 610106China China National Coal Group Corporation Beijing 100120China Tianjin Engineering Research Center of Civil Aviation Energy Environment and Green Development School of Transportation Science and EngineeringCivil Aviation University of ChinaTianjin 300300China

Layered double hydroxides have demonstrated great potential for the oxygen evolution reaction,which is a crucial half-reaction of overall water ***,it remains challenging to apply layered double hydroxides in other electrochemical reactions with high efficiency and ***,we report two-dimensional multifunctional layered double hydroxides derived from metalorganic framework sheet precursors supported by nanoporous gold with high porosity,which exhibit appealing performances toward oxygen/hydrogen evolution reactions,hydrazine oxidation reaction,and overall hydrazine *** as-prepared catalyst only requires an overpotential of 233 mV to reach 10 mA·cm^(-2) toward oxygen evolution *** overall hydrazine splitting cell only needs a cell voltage of 0.984 V to deliver 10 mA·cm^(-2),which is far more superior than that of the overall water splitting system(1.849 V).The appealing performances of the catalyst can be contributed to the synergistic effect between the metal components of the layered double hydroxides and the supporting effect of the nanoporous gold substrate,which could endow the sample with high surface area and excellent conductivity,resulting in superior activity and stability.

关键词： layered double hydroxide oxygen evolution reaction hydrazine oxidation reaction overall hydrazine splitting hydrogen production

来源：评论

学校读者我要写书评

暂无评论

Interfacial modification enhancing corrosion resistance of boron nitride nanosheets/Al matrix composites

引用

Journal of Materials science & technology 2026年 240卷 98-113页

作者： Ancang Yang Lishi Ma Yonghua Duan Xudong Rong Yimin Zhang Lin Zhu Shanju Zheng Mingjun Peng Mengnie Li Faculty of Material Science and Engineering Yunnan Key Laboratory of Integrated Computational Materials Engineering for Advanced Light Alloys Kunming University of Science and Technology Kunming 650093 China School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional Materials Tianjin University Tianjin 300350 China National Key Laboratory of Nuclear Fuel and Material Nuclear Power Institute of China Chengdu 610041 China

The difference in electrochemical behavior between reinforcement and metal matrix usually damages the corrosion resistance of composites. Herein, the coherent BNNSs-AlN-Al transition interface is creatively constructed in the Aluminium-Boron nitride nanosheets (Al-BNNSs) system based on reactive sintering. It is demonstrated that BNNSs/Al composites exhibit good corrosion resistance via interfacial modification. The BNNSs-AlN-Al transition interface not only optimizes the interfacial structure of BNNSs/Al composites but also significantly enhances the interface bonding strength. Many low-angle grain boundaries (LAGBs) are induced during extrusion due to the pinning effect of strong bonding transition interface. Besides, density functional theory (DFT) calculation and geometric phase analysis (GPA) were executed to clarify the influence of interface design on the corrosion behavior of BNNSs/Al composites. It is found that the transition interface and LAGBs have strong valence electron constraint ability, thus weakening the galvanic effect in composites. Also, the construction of the transition interface reduces the geometrically necessary dislocations and lattice distortion in the grains of Al matrix, avoiding the decrease of corrosion potential of Al matrix. Ultimately, the coupling effect between LAGB and transition interface not only significantly enhances the ion erosion resistance of composites, but also shifts the corrosion mechanism from intergranular corrosion (IGC) to pitting corrosion (PC) in Al matrix. The current work provides a feasible route for the design of aluminum matrix composites (AMCs) with high corrosion resistance.

关键词： BNNSs/Al composites Coherent transition interface Corrosion potential Corrosion resistance

来源：评论

学校读者我要写书评

暂无评论

Preparation of metal‐organic frameworks and their derivatives for supercapacitors

引用

Biosurface and Biotribology 2022年第3期8卷 151-164页

作者： Youjian Li Donglin Gan Xu Deng Lili Jiang Chaoming Xie Xiong Lu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduSichuanChina Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‐functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsuChina Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengduChina Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and EngineeringXihua UniversityChengduChina

To satisfy the requirements of social power development,it is urgently necessary to develop innovative and sustainable new energy storage *** have attracted considerable attention as a new type of energy storage device,owing to their high energy density,high power density,fast charging and discharging speeds,and long cycle *** electrode material is an important factor in determining the electrochemical performance of *** recent years,researchers explored the application of metal‐organic frameworks(MOFs)and their derivatives as electrode materials for *** this paper,the preparation of monometallic,bimetallic,and conductive MOFs,and their derivatives for application in supercapacitors are *** addition,challenges facing MOFs in the field of supercapacitors and their future development prospects are discussed.

关键词： bimetallic MOFs conductive MOFs derivatives monometallic MOFs supercapacitors

来源：评论

学校读者我要写书评

暂无评论

Enhanced exciton dissociation through scandium-decorated conjugated polymers for artificial photosynthesis of hydrogen peroxide

引用

Journal of Energy Chemistry 2025年第4期103卷 714-722页

作者： Xingxing Chen Yongli Shen Fan Yang Shuang Yao Wen Zhang Baojuan Xi Xuguang An Shenglin Xiong Jinhua Ye Changhua An Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin Key Laboratory of Advanced Functional Porous MaterialsInstitute of New Energy Materials&Low-Carbon TechnologiesTianjin University of TechnologyTianjin 300384China School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100ShandongChina School of Mechanical Engineering Chengdu UniversityChengdu 610106SichuanChina International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan

Solar-driven hydrogen peroxide(H_(2)O_(2))production offers a sustainable and environmentally friendly alternative to the traditional anthraquinone oxidation *** polymers(CPs)are emerging as promising photocatalysts for H_(2)O_(2)production due to their unique electronic,optical properties,and tunable ***,the high exciton binding energy of CPs hinders efficient exciton dissociation and charge separation,limiting their photocatalytic *** this work,we synthesized scandium(Sc)atoms decorated CPs with enhanced ordered stacking and crystallinity by introducing benzaldehyde as an end-capping *** strong interaction between charged Sc atoms and electrons facilitates exciton dissociation and improves charge transfer ***,the Lewis acidic nature of Sc atoms promotes oxygen adsorption and enhances the stabilization of superoxide anion intermediate(·O_(2)^(-)).As a result,the as-synthesized photocatalysts exhibit a high H_(2)O_(2)production rate of 18μmol h^(-1)in pure water,which is three times that of pristine CPs,This work provides valuable insights into the design of organic polymer photocatalysts for various photocatalytic reactions.

关键词： Photocatalysis H_(2)O_(2) Exciton dissociation Conjugated polymers

来源：评论

学校读者我要写书评

暂无评论

Decoration of carbon encapsulated nitrogen-rich MoxN with few-layered MoSe2 nanosheets for high-performance sodium-ion storage

引用

Journal of Energy Chemistry 2022年第11期31卷 332-340,I0009页

作者： Tao Lu Baoquan Liu Fanyan Zeng Guo Cheng Shile Chu Meilan Xie Zhi Chen Zhaohui Hou School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang 330063JiangxiChina Jiangxi Key Laboratory of Nanomaterials and Sensors School of PhysicsCommunication and ElectronicsJiangxi Normal UniversityNanchang 330022JiangxiChina Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang 414006HunanChina

Transition metal nitrides have become the focus of research in sodium ion batteries(SIBs)due to their unique metal properties and high theoretical ***,the low actual capacity is still the main bottleneck for their ***,using Mo-aniline frameworks as precursors,the carbon encapsulated nitrogen-rich Mo_(x)N is decorated by few-layered MoSe_(2) nanosheets(MoSe_(2)@Mo_(x)N/C-I)after the facile calcinating,selenizing,and *** carbon encapsulation can effectively strengthen the structural stability of Mo_(x)*** nitrogen-rich Mo_(x)N and decoration of few-layered MoSe_(2) can create rich heterointerfaces and extra active sites for rapid sodium-ion storage,thus promoting reaction kinetics and improving actual *** MoSe_(2)@Mo_(x)N/C-I as an anode achieves a large reversible capacity of 522.8 mAh g^(-1)at 0.1 A g^(-1),and 254.3 mAh g^(-1)capacity is obtained after 6000 cycles at 5.0 A g^(-1),showing signally improved sodium-ion storage *** storage mechanisms and kinetic behaviors are described systematically via the advanced testing techniques and density functional theory(DFT)*** is found that the nitrogen-rich Mo_(x)N as the substrate is the basis of long cycling stability,and the few-layered MoSe_(2) are the key to improving actual *** work indicates that the decoration of few-layered selenides has a broad application prospect in high-performance metal-ion batteries.

关键词： Few-layered MoSe_(2)nanosheets Decoration Carbon encapsulation Nitrogen-rich MoxN Sodium ion batteries

来源：评论

学校读者我要写书评

暂无评论

Pressure induced insulator to metal transition in quantum spin liquid candidate NaYbS_(2)

引用

Chinese Physics B 2023年第9期32卷 369-372页

作者：贾雅婷龚春生李芷文刘以轩赵建发王哲雷和畅于润泽靳常青 Institute of Physics Chinese Academy of SciencesBeijing 100190China Xi'an Modern Chemistry Research Institute Xi'an 710065China Laboratory for Neutron Scattering and Beijing Key Laboratory of Optoelectronic Functional Materials MicroNano DevicesDepartment of PhysicsRenmin University of ChinaBeijing 100872China College of Chemistry and Material Science Hebei Normal UniversityShijiazhuang 050024China Center for High-Pressure Science and Technology Advanced Research Beijing 100094China University of Chinese Academy of Sciences Beijing 100190China

Pressure induced insulator to metal transition followed by the appearance of superconductivity has been observed recently in inorganic quantum spin liquid candidate NaYbSe_(2).In this paper,we study the properties of isostructural compound NaYbS_(2)under *** is found that the resistance of Na YbS_(2)single crystal exhibits an insulating state below 82.9 GPa,but with a drop of more than six orders of magnitude at room *** a minimum of resistance is observed at about 100.1 GPa and it moves to lower temperature with further ***,a metallic state in the whole temperature range is observed at about 130.3 GPa accompanied by a non-Fermi liquid behavior below 100 *** insulator to metal transition,non-monotonic resistance feature and non-Fermi liquid behavior of NaYbS_(2)under pressure are similar to those of NaYbSe_(2),suggesting that these phenomena might be the universal properties in NaLnCh_(2)(Ln=rare earth,Ch=O,S,Se)system.

关键词： high pressure quantum spin liquid insulator to metal transition NaYbS_(2)

来源：评论

学校读者我要写书评

暂无评论

Electrolyte Engineering for High-Voltage Lithium Metal Batteries

引用

Research 2022年第4期2022卷 781-832页

作者： LiweiDong Shijie Zhong Botao Yuan Yuanpeng Ji Jipeng Liu Yuanpeng Liu Chunhui Yang Jiecai Han Weidong He MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150080China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and Structures Harbin Institute of TechnologyHarbin 150080China 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 UniversityChengdu610106China

High-voltage lithium metal batteries(HVLMBs)have been arguably regarded as the most prospective solution to ultrahigh-density energy storage devices beyond the reach of current ***,the only component inside the HVLMBs in contact with both aggressive cathode and Li anode,is expected to maintain stable electrode/electrolyte interfaces(EEIs)and facilitate reversible Li+***,traditional electrolytes with narrow electrochemical windows fail to compromise the catalysis of high-voltage cathodes and infamous reactivity of the Li metal anode,which serves as a major contributor to detrimental electrochemical performance fading and thus impedes their practical *** stable electrolytes is vital for the further development of ***,optimization principles,design strategies,and future perspectives for the electrolytes of the HVLMBs have not been summarized in *** review first gives a systematical overview of recent progress in the improvement of traditional electrolytes and the design of novel electrolytes for the *** strategies of conventional electrolyte modification,including high concentration electrolytes and CEI and SEI formation with additives,are *** electrolytes including fluorinated,ionic-liquid,sulfone,nitrile,and solid-state electrolytes are also *** addition,theoretical studies and advanced characterization methods based on the electrolytes of the HVLMBs are probed to study the internal mechanism for ultrahigh stability at an extreme *** also foresees future research directions and perspectives for further development of electrolytes in the HVLMBs.

关键词： electrolyte maintain summarized

来源：评论

学校读者我要写书评

暂无评论

A guide to use fluorinated aromatic bulky cations for stable and high-performance 2D/3D perovskite solar cells:The more fluorination the better?

引用

Journal of Energy Chemistry 2022年第1期31卷 179-189,I0006页

作者： Lei Wang Qin Zhou Zilong Zhang Wenbo Li Xiaobing Wang Qi ng Tian Xiaoyan Yu Ting Sun Jihuai Wu Bao Zhang Peng Gao School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina Laboratory for Advanced Functional Materials.Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen 361021FujianChina College of Materials Science and Engineering Huaqiao University361021 XiamenFujianChina

While serious stability issues impede the commercialization of perovskite solar cells(PSCs),two-dime nsional(2D)perovskites based on fluorinated bulky cations have emerged as more intrinsically stable ***,the influence of fluorination degree of the bulky aromatic cation on the per-formance of resulting PSCs has not been ***,2D perovskites(FxPEA)_(2)PbI_(4)(x=1,2,3,5)are grown in situ on the surface of the three-dime nsion al(3D)perovskite and dem on strate effective passivation of the surface defects of 3D *** power conversion efficiency(PCE)of the optimized devices were boosted from 20.75%for the control device to 21.09%,22.06%,22.74%and 21.86%for 2D/3D devices treated with 4-fluorophenethylamine iodide,3,5-difluorophenylethylamine iodide,2,4,5-trifluoroethylphenylethylamine iodide,and 1,2,3,4,5-pentafluorophenylethylamine iodide,*** firstly reported two unexplored RP-type layered perovskites with F_(2)PEAI and F_(3)PEAI as bulky *** combined experimental and theoretical analysis revealed the reasons behind the various morphology,device performances,dynamic behavior,and humidity *** best performing F_(5)PEAI-treated device retaining 95.0%of its initial PCE under ambient atmosphere(with RH of 60%±5%)without encapsulation for 300 h *** work provides useful guidance for selecting fluorinated bulky cations with different molecular electronic properties,which will play an essential role in further improving the performance/stability of PSCs for the sake of further commercialization.

关键词： 2D perovskite Fluorinated spacer cation Perovskite solar cells Passivation Stability

来源：评论

学校读者我要写书评

暂无评论

X-ray stress measurement of SiC single-crystal induced by laser ablation 8

X-ray stress measurement of SiC single-crystal induced by la...

引用

8th Symposium on Novel Photoelectronic Detection technology and Applications

作者： Deng, Ya Zhou, Yufeng Zhang, Yumin National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin150080 China Center for Composite Materials and Structures Harbin Institute of Technology Harbin150080 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

The residual stress distribution induced by nanosecond UV laser irradiation on the surface of SiC single crystal was detected through X-ray stress measurement method in this manuscript. In order to explain the generation mechanism of the residual stresses, the surface morphology of the laser ablation zone was characterized by laser scanning confocal microscopy. Besides, the material compositions of the ablation zone were also observed by using energy dispersive X-ray spectrometer. The measurement results indicated that tensile stress distribution existed around the laser-irradiated zone, while the center position of the laser spot had the smaller residual stresses. There were obvious bulges at the ablation zone margin, which may be caused by the melting of the material and the splashing and re-solidification of molten material in the ablation hole. In addition, there exists oxidation phenomenon in the irradiated region by comparing the EDS results of laser irradiated and unirradiated regions. This suggested that the temperature reached its melting point and photothermal ablation occurred when laser irradiated on the surface of the silicon carbide specimen. Therefore, it can be concluded that the existence of residual stresses was related to the local thermal expansion caused by laser irradiation. And the residual stresses at the marginal zone had the larger tensile stresses because of the transverse extrusion effect. © 2022 SPIE

关键词： Silicon carbide

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：