共搜索到232195条信息,每页显示10条信息,共23220页。用时:0小时0分0秒656毫秒
Efficient improvement of 2.7 μm luminescence of Er3+:oxyfluoride glass containing gallium by Yb3+ ions codopingYapei Peng1,Xinqiang Yuan2,Long Zhang2,Peiguang Yan1,Wenfei Zhang1,Shuangchen Ruan11... glass systems for high-power laser gain medium have posed a great challenge.Therefore, we investigated the 2.7 μm spectroscopic properties of Er3+/Yb3+ -codoped oxyfluoride glass containing gallium......
Properties of multilayer gallium and aluminum doped ZnO(GZO/AZO) transparent thin films deposited by pulsed laser deposition process Jin-Hyun SHIN, Dong-Kyun SHIN, Hee-Young LEE, Jai-Yeoul LEE Department of Materials Engineering, Yeungnam University, Gyongsan 712-749, Korea Received 21 April 2010; accepted 10 September 2010 Abstract: Multilayer gallium and aluminum doped ZnO (GZO/AZO) films......
of the zinc powder replacement residues containing gallium and germanium (mass fraction, %) 由表4 的电子探针定量分析结果可知,图2中点1主要物相为硫酸锌,该物相中基本不含镓,锗;图2中点6,11,13和点3,8分别为铁酸锌和硅酸锌物相,这两种物相中镓,锗的含量明显高于硫酸锌物相,另外,硅酸锌中镓,锗的分布要高于铁酸锌中.图2中其余的点主要为含有锌,铅,铜,钙等金属的铁,硅的胶体化合物. 表2 锌粉置换镓锗渣中镓锗物相的化学分析结果 Table 2 Gallium and germanium phases in zinc powder replacement residue containing gallium and germanium by chemical analysis (mass......
铁电薄膜电疲劳研究进展 张颖1,程璇2,陈志武1 (1.厦门大学,材料科学与工程系,福建,厦门,361005;2.厦门大学,化学系,固体表面物理化学国家重点实验室,福建,厦门,361005) 摘要:铁电薄膜在交变电场下发生电疲劳现象是影响其商业应用的主要障碍,也是目前国内外研究的热点.本文从铁电薄膜电疲劳的影响因素,疲劳机理和消除疲劳的措施出发综述了近年来国内外在铁电薄膜电疲劳研究方面取得的进展. 关键词:铁电薄膜; 电疲劳; 畴变; [全文内容正在添加中] ......
蛋白质的电分析化学研究丁小勤,胡劲波,李启隆摘 要:生命现象的许多过程皆伴随着电子传递反应,应用电化学方法研究生物体系的电子传递及其相关过程是揭示生命本质的较好途径.本文从酶生物传感器,蛋白质修饰电极和免疫传感器3个方面评述了近年来蛋白质的电分析化学研究的现状和进展,并提出了今后可能的研究方向.关键词:生物传感器;酶生物传感器;免疫传感器;蛋白质;电分析化学;......
氮化镓薄膜生长工艺研究的最新进展 孙晋伟1,邱向东2,赵谢群2,张燕红2 (1.北京科技大学;2.北京有色金属研究总院,北京100088) 摘要:综述了高质量GaN薄膜材料生长工艺的最新进展,着重阐明金属有机物汽相沉积工艺以及以活性氮为前体的分子束外延工艺的应用. 关键词:GaN; 薄膜; 外延生长; 活化氮源; [全文内容正在添加中] ......
Separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204): Part I. Selection of separation conditionsLIU Junshen , HE Zhengguang... of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204). The aim of the research is to collect preliminary......
Selectively recovering scandium from high alkali Bayer red mud without impurities of iron, titanium and gallium刘召波,宗燕兵,李宏煦,贾东民,赵子晗School of Metallurgical and Ecological Engineering University... temperature, leaching time and liquid to RM solid ratio on the leaching rates of calcium, iron, aluminum, silicon, sodium, titanium, scandium and gallium were studied and analyzed, suggesting......
Selectively recovering scandium from high alkali Bayer red mud without impurities of iron, titanium and gallium刘召波,宗燕兵,李宏煦,贾东民,赵子晗School of Metallurgical and Ecological Engineering University... temperature, leaching time and liquid to RM solid ratio on the leaching rates of calcium, iron, aluminum, silicon, sodium, titanium, scandium and gallium were studied and analyzed, suggesting......
Processing and Bioengineering,Central South University, Changsha 410083 , China) Abstract: Thermodynamics and technologies of separating gallium and germanium from ferrous powder produced from zinc leach residues were investigated by corrosion process. Thermodynamic results show that under the specific conditions on pH value and potential φ, metallic iron may precipitate as goethite, while gallium......