强光离子渗金属

随着表面工程技术的发展,各种表面涂覆方法不断出现,我们研制的强光离子渗金属,已在耐磨,耐腐蚀,元器件软件焊性方面做了应用实验,取得了良好的效果。本文就其装置及放电特性等方面进行阐述。     

Gel Polymer Electrolyte toward Large-Scale Application of Aqueous Zinc Batteries

Aqueous zinc batteries are promising candidates for energy storage and conversion devices in the “post-lithium” era due to their high energy density, high safety, and low cost. The electrolyte plays an important role in zinc batteries by conducting and separating the positive and negative electrodes. However, the issues of zinc dendrites growth, corrosion, by-product formation, hydrogen evolution and leakage, and evaporation of the aqueous electrolytes affect the commercialization of the batteries. Moreover, the widely used aqueous electrolytes result in large battery sizes, which are not conducive to the emerging smart devices. The intrinsic properties of gel polymer electrolytes (GPEs) can solve the above problems. In order to promote the wider application of GPEs-based zinc batteries, in this review, the working principle and the current problems of zinc batteries are first introduced, andthe merits of GPEs compared to aqueous electrolytes are then summarized. Subsequently, a series of challenges and corresponding strategies faced by GPE is discussed, and an outlook for its future development is finally proposed.     

LEC不掺杂半绝缘GaAs的热处理特性

本文对LEC不掺杂SI-GaAs的热处理特性进行了实验研究和分析。结果表明,As、Ga原子从表面挥发及缺陷的内扩散引起表面热蚀和热致导电层的形成。文章讨论了它们对注入层激活行为的影响。指出,采用本文设计的高温快速热处理结合压盖、InAs作过砷压源技术,可以获得满足注硅材料退火要求的SI-GaAs热处理特性。     

用AMRAY－1910FE场发射扫描电镜研究不同材料和方法的导电膜蒸镀对试样形貌观察的影响

本文通过离子溅射镀膜和高真空蒸发镀膜两种方法，用金和钯铱合金做为蒸发源，对样品表面蒸镀导电层。然后用ＡＭＲＡＹ－１９１０ＦＥ场发射扫描电镜观察试样表面蒸镀层对试样形貌的影响。实验表明在放大倍数超过５万倍以上观察试样时，由于金镀层粒度太大，因此不能用来做为表面导电镀层。但用高真空蒸发镀膜，用钯铱合金做为试样表面蒸镀材料，在２５万倍以下观察时，无论从膜的导电性方面或是其颗粒度方面来看都不失为一种较好的蒸镀材料。     

理想匹配层的综合优化

本文讨论了理想匹配层的吸收性能 ,给出了一种有效截断理想匹配层的边界条件 ,分析了不同导率剖面和边界条件对理想匹配层吸收性能的影响 ,给出了最小反射意义下的优化理想匹配层。     

光刻胶灰化技术用于同步辐射闪耀光栅制作

在分析光刻胶光栅浮雕图形缺陷成因的基础上,首次将光刻胶灰化工艺引入到全息－离子束刻蚀制作闪耀光栅工艺中,并成功地为国家同步辐射实验室光化学站制作了１２００１／ｍｍ,闪耀波长为１３０ｎｍ的锯齿槽形光栅。测试结果表明光刻胶灰化处理对制作大面积优质的光刻胶光栅非常有效和实用。     

Is there a future for semiconducting silicides? (invited)

Silicon is commercially by far the most important semiconductor, however, because silicon has an indirect band gap it would initially appear to be unsuitable for optoelectronic applications. A major research challenge is, therefore, to achieve high intensity light emission from silicon and to engineer active and passive optical structures within it. This paper examines the potential of semiconducting silicides (principally, βFeSi₂ and Ru₂Si₃) for silicon-based optoelectronic applications. It traces the history of the subject from the first photoluminescence spectrum from βFeSi₂ to a working LED which uses βFeSi₂ precipitates as a route for fast radiative recombination. Recent results on semiconducting Ru₂Si₃ are also reported, which show, for the first time, that this material can be fabricated by high dose ion implantation. They also reveal a direct band gap of 0.91 eV. The future for semiconducting silicides is examined and, although there are still barriers to overcome — the future looks bright.     

土壤导水参数的温度效应及其数学模式

本文对非饱和土壤导水参数包括土壤水分特征曲线ｈ（θ），土壤水分扩散率Ｄ（θ）及土壤非饱和导水率Ｋ（θ）的温度效应进行了定量研究，在此基础表面张力－－粘滞流理论（ＳＴＶＦ），Ｇ（θ）因子函数及Ｐｈｉｌｉｐ理论对其温度效应的机理进行了分析，对用理论模式计算结果与实浊数据进行了比较。     

一类新型高导热环氧模塑料的制备

采用Si3N4陶瓷作填料,制备了一类新型高导热的环氧模塑料,研究了Si3N4的含量、分布及其形态对复合材料的导热性能及介电性能的影响。结果表明:随着Si3N4粉末体积填充量的增加,复合材料的热导率显著提高,当填充量体积分数为60%时,复合材料的热导率达到2.3W/(m·K),其介电常数随体积填充量的增加亦有所增加,但仍然维持在低水平。采用Agari模型进行理论计算的结果表明,该体系导热性能的提高与Si3N4填料之间热传导网络的形成有关。     

TiO2陶瓷在磁控溅射中电导率改变机理研究

在Ar气氛中对TiO2陶瓷进行射频磁控溅射时，TiO2陶瓷电导经发生显著变化。该文对这一现象进行了研究。采用多种分析手段对实验结果进行了分析。分析表明，辉光放电电离Ar气所产生的Ar离子冲击TiO2陶瓷表面的热量和动量被O^2-吸收，引进O^2-溢出TiO2陶瓷，导致TiO2化学配比偏离正常，从而提高了TiO2陶瓷的电导率。