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浏览/检索结果: 共35条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Enhanced Hydrogen Evolution Catalysis of Pentlandite due to the Increases in Coordination Number and Sulfur Vacancy during Cubic-Hexagonal Phase Transition 期刊论文  OAI收割 SMALL, 2024, 页码: 11 作者:  Liu, Yuegao;  Cai, Chao;  Zhu, Shengcai;  Zheng, Zhi;  Li, Guowu   |  收藏  |  浏览/下载：13/0  |  提交时间：2024/04/19 hexagonal pentlandite  hydrogen evolution reaction  phase transition  sulfur vacancy  transition metal   基于低维六方氮化硼纳米结构的持久性有机污染物吸附与萃取技术研究 学位论文  OAI收割 北京: 中国科学院大学；中国科学院生态环境研究中心, 2021 作者:  陈相峰   |  收藏  |  浏览/下载：16/0  |  提交时间：2022/06/10 低维纳米材料  六方氮化硼  持久性有机污染物  吸附  固相微萃取  短链氯化石蜡  low Dimensional Nanomaterials, Hexagonal Boron Nitride, Persistent Organic Pollutants, Adsorption, Solid-phase Microextraction, Short-chain Chlorinated Paraffins   High-contrast, reversible change of thermal conductivity in hexagonal nickel-iron sulfides 期刊论文  OAI收割 ACTA MATERIALIA, 2021, 卷号: 208 作者:  Zhang, X. K.;  Li, J. Y.;  Lin, J. C.;  Tong, P.;  Wang, M.   |  收藏  |  浏览/下载：26/0  |  提交时间：2021/05/17 Thermal regulation  First-order phase transition  High-contrast thermal conductivity change  Theoretical calculations  Hexagonal nickel sulfides   Quasi-Epitaxial Growth of Magnetic Nanostructures on 4H-Au Nanoribbons 期刊论文  OAI收割 ADVANCED MATERIALS, 2020, 页码: 8 作者:  Cheng, Hongfei;  Yang, Nailiang;  Liu, Xiaozhi;  Guo, Yilv;  Liu, Bin   |  收藏  |  浏览/下载：51/0  |  提交时间：2021/03/29 core–  shell structures  epitaxial growth  hexagonal phases  magnetic properties  phase engineering   Rapid phase transition of polybutene-1 from form II to form I induced by pressure 期刊论文  OAI收割 Polymer, 2020 作者:  Xiangyang Li;  Pujing Chen;  Jianjun Ding;  Kang Zheng;  Lin Chen   |  收藏  |  浏览/下载：30/0  |  提交时间：2020/10/20 Polybutene-1  Phase transition  Pressure  Tetragonal form II  Hexagonal form I   Reducing Grain Size and Enhancing Luminescence of NaYF4:Yb3+, Er3+ Upconversion Materials 期刊论文  OAI收割 CRYSTAL GROWTH & DESIGN, 2018, 卷号: 18, 期号: 2, 页码: 808-817 作者:  He, Xiang;  Lei, Fengying;  Jiang, Na;  Zheng, Qiaoji;  Xu, Chenggang   |  收藏  |  浏览/下载：71/0  |  提交时间：2018/12/04 Controlled Hydrothermal Growth  Shape-controllable Synthesis  Solvothermal Synthesis  Fluoride Nanocrystals  Assisted Synthesis  Optical-properties  Hexagonal-phase  Drug-delivery  Emission  Ln   Upconversion properties and temperature sensing behaviors in visible and near-infrared region based on fluorescence intensity ratio in LuVO4 Yb3+Er3+ 期刊论文  OAI收割 Journal of Alloys and Compounds, 2018, 卷号: 769, 页码: 325-331 作者:  Ma, Y.;  Xiang, G. T.;  Zhang, J. H.;  Liu, Z.;  Zhou, P.   |  收藏  |  浏览/下载：25/0  |  提交时间：2019/09/17 Energy transfer  Upconversion  Fluorescence intensity ratio  Optical  thermometry  LuVO4: Yb3+/Er3+  hydrothermal synthesis  hexagonal-phase  luminescence  er3+  yb3+  nanocrystals  thermometry  lanthanide  phosphor  emission  Chemistry  Materials Science  Metallurgy & Metallurgical Engineering   Phase Formation and Microstructure of BaTiO3 Ceramics Prepared by Direct Current Arc Discharge Process 期刊论文  OAI收割 FERROELECTRICS, 2015, 卷号: 478, 期号: 1, 页码: 127-131 作者:  Li, Shuangbin;  Yao, Ying;  Jia, Yongzhong;  Jing, Yan;  Sun, Jinhe   |  收藏  |  浏览/下载：29/0  |  提交时间：2018/06/20 Tetragonal Phase  Hexagonal Phase  Barium Titanate  Microstructure   Incommensurate structure of a new Nowotny phase in Fe-Ge system 期刊论文  OAI收割 Materials Chemistry and Physics, 2014, 卷号: 148, 期号: 3, 页码: 490-493 W. F. Li; Y. Li; X. L. Ma; Z. D. Zhang 收藏  |  浏览/下载：29/0  |  提交时间：2015/01/14 Magnetic materials  Electron microscopy  Heat treatment  Crystal  structure  Phase transitions  chimney ladder phases  manganese silicides  14-electron rule  hexagonal  fege  cubic fege   Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE) 会议论文  OAI收割 2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China 作者:  Zhao J. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The pure -NaYF4: Yb3+  Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+  Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser  the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample  resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications  Switzerland.