介绍了近年来微纳米材料强度实验测试研究方面的最新进展,重点综述了可用于微纳米材料及其结构中界面强度测试的实验系统、测试方法及结果.主要内容包括:测试微纳米薄膜界面端分层裂纹启裂的夹层悬臂梁方法,测试纳米岛/衬底间界面结合...介绍了近年来微纳米材料强度实验测试研究方面的最新进展,重点综述了可用于微纳米材料及其结构中界面强度测试的实验系统、测试方法及结果.主要内容包括:测试微纳米薄膜界面端分层裂纹启裂的夹层悬臂梁方法,测试纳米岛/衬底间界面结合强度的改进AFM(atomic force microscopy)方法,测试裂纹沿界面扩展的预裂纹法,可实现纳米薄膜界面裂纹原位观察的实验测试方法,测试薄膜在疲劳、蠕变条件下界面裂纹扩展的改进4点弯曲法等.除了总结分析测试结果,还讨论了上述实验方法的优缺点和适用范围,并指出了微纳米材料界面强度实验研究方面的一些挑战与难点,最后提出了若干需要继续研究的课题.展开更多
The quaternary complex, [Ce（CH2ClCOO）2（NO3）（phen）（H2O）]2, was synthesized. Interestedly, the title compound is a dimer comparing with the 1D polymer [La（CH2ClCOO）2（NO3）（phen）·（H2O）]n and powder co...The quaternary complex, [Ce（CH2ClCOO）2（NO3）（phen）（H2O）]2, was synthesized. Interestedly, the title compound is a dimer comparing with the 1D polymer [La（CH2ClCOO）2（NO3）（phen）·（H2O）]n and powder compound [Nd（CH2ClCOO）2（NO3）（phen）]. In the title compound there is a monodentate NO-3, which is a first example in the all synthesized quaternary mixed anion complexes, and the NO-3 extended the complex into a 2D network with water from other molecules by inter-molecular hydrogen bonds. The intermolecular hydrogen bonds lead to the weaker Ce—O（COO）, Ce—O（NO3） and Ce—N bonds comparing with other quaternary mixed anion complexes of cerium. Also the stacking effect, which makes the compound more stable in the situation of weaker Ce—O and Ce—N bonds, was first found in the series compounds.展开更多
Electrochemical properties of a natural graphite anode in ionic liquid and organic electrolytes was comparatively investigated. The results reveal that the organic cation reversibly inserted into and deinserted from g...Electrochemical properties of a natural graphite anode in ionic liquid and organic electrolytes was comparatively investigated. The results reveal that the organic cation reversibly inserted into and deinserted from graphene interlayer. The addition of chloroethylenene carbonate(Cl-EC) resulted in significant electrochemical enhancement. The mechanisms responsible for the electrochemical enhancement were discussed through ac impedance, SEM, and FTIR measurements.展开更多
文摘介绍了近年来微纳米材料强度实验测试研究方面的最新进展,重点综述了可用于微纳米材料及其结构中界面强度测试的实验系统、测试方法及结果.主要内容包括:测试微纳米薄膜界面端分层裂纹启裂的夹层悬臂梁方法,测试纳米岛/衬底间界面结合强度的改进AFM(atomic force microscopy)方法,测试裂纹沿界面扩展的预裂纹法,可实现纳米薄膜界面裂纹原位观察的实验测试方法,测试薄膜在疲劳、蠕变条件下界面裂纹扩展的改进4点弯曲法等.除了总结分析测试结果,还讨论了上述实验方法的优缺点和适用范围,并指出了微纳米材料界面强度实验研究方面的一些挑战与难点,最后提出了若干需要继续研究的课题.
文摘The quaternary complex, [Ce（CH2ClCOO）2（NO3）（phen）（H2O）]2, was synthesized. Interestedly, the title compound is a dimer comparing with the 1D polymer [La（CH2ClCOO）2（NO3）（phen）·（H2O）]n and powder compound [Nd（CH2ClCOO）2（NO3）（phen）]. In the title compound there is a monodentate NO-3, which is a first example in the all synthesized quaternary mixed anion complexes, and the NO-3 extended the complex into a 2D network with water from other molecules by inter-molecular hydrogen bonds. The intermolecular hydrogen bonds lead to the weaker Ce—O（COO）, Ce—O（NO3） and Ce—N bonds comparing with other quaternary mixed anion complexes of cerium. Also the stacking effect, which makes the compound more stable in the situation of weaker Ce—O and Ce—N bonds, was first found in the series compounds.
文摘Electrochemical properties of a natural graphite anode in ionic liquid and organic electrolytes was comparatively investigated. The results reveal that the organic cation reversibly inserted into and deinserted from graphene interlayer. The addition of chloroethylenene carbonate(Cl-EC) resulted in significant electrochemical enhancement. The mechanisms responsible for the electrochemical enhancement were discussed through ac impedance, SEM, and FTIR measurements.
