利用LB技术获得金纳米粒子二维结构

首先制备镉离子的LB单层膜,将硫化氢气体通人LB膜,并与之反应生成硫化镉纳米微粒,再与氯金酸发生氧化还原反应,形成金纳米粒子二维结构．AFM表征显示,所生成的金纳米粒子是单层结构,粒径为10nm左右,XPS结果表明,硫化镉与氯金酸反应生成单质金的二维纳米结构．     

Phase reaction of Au/Sn solder bonding for GaN-based vertical structure light emitting diodes

Au/Sn solder bonding on Si substrates was used to fabricate the GaN-based vertical structure light emitting diodes (VSLEDs). The phase reaction of Au/Sn solder under different bonding conditions was investigated by the measurement of electron back scattering diffraction (EBSD), and the characteristics of VSLED were analyzed by scanning acoustic microscope (SAM), Raman scattering, current-voltage (I-V) and light output-current (L-I) curves. After the bonding process, horizontal stripes of Au/Sn phase (δ phas...     

Phase transfer based synthesis and thermophysical properties of Au/Therminol VP-1 nanofluids

This paper reports a phase transfer based wet chemistry method for the preparation of Au/VP-1 nanofluids.The method involves the transfer of AuCl 4 ions from water to the base liquid Therminol VP-1,followed by the reduction of AuCl 4 ions using NaBH 4.The prepared nanofluids are characterized for their thermophysical properties and stability.The results show that the mass concentration of Au particles has a significant effect on the stability of Au/VP-1 nanofluids.An increase in the Au concentration results in a higher extent of agglomeration among the particles,leading to a decrease in the nanofluid stability.The results also show that the introduction of 0.005-0.05% Au nanoparticles enhances the thermal conductivity of the fluids by up to 6.5%,whereas the viscosity increase is minimal.     

基于金纳米棒可饱和吸收体的Nd:YSAG被动调Q激光器

以新型金纳米材料为可饱和吸收体,研究了LD端面泵浦的Nd:YSAG被动调Q激光器的激光输出特性。实验中通过调整金纳米棒的长径比等参数,成功地将金纳米棒材料由表面等离子体共振引起的非线性吸收峰调控到Nd:YSAG激光的输出波长1 062 nm处,并成功获得了稳定的被动调Q激光输出,在泵浦功率为4.9 W时,激光器的平均输出功率为14 m W,此时,激光脉冲宽度为944.1 ns,重复频率100.1 k Hz。实验结果表明,金纳米材料在脉冲激光领域具有良好的应用前景。     

紫外光催化一步合成Au-[C12min][Br]纳米复合物及其对血红蛋白直接电化学行为的研究

采用紫外光照射法在咪唑类离子液体[C12min][Br]中一步合成了Au-[C12min][Br]纳米复合物,将该纳米复合物固定牛血红蛋白(Hb)后修饰于玻碳(GC)电极表面构成Hb/Au-[C12min][Br]/GC修饰电极。电化学研究表明,Hb在Au-[C12min][Br]纳米复合物膜上发生了准可逆的电极反应,氧化峰电位(Epa)和还原峰电位(Epc)分别为-0.253V和-0.335V。Au-[C12min][Br]纳米复合物对Hb的直接电子转移有很好的促进作用,表现出良好的电化学活性。Hb/Au-[C12min][Br]/GC对H2O2有较好的电催化能力,对进一步研究H2O2传感器具有重要意义。     

An EQCM study of the electrochemical behaviors of polycrystalline gold electrode in sulfuric acid solution

The electrochemical quartz crystal microbalance (EQCM) was applied to study the electrochemical behaviors of polycrystalline Au in sulfuric acid solution. The large mass change observed in the doublelayer region was attributed to the partly discharged adsorption of sulfate anions with the co-adsorption of H₂O. According to the observed EQCM frequency response, the formation mechanism of surface oxide was reasonably postulated, in which the roles of the adsorbed anions and the co-adsorbed H₂O were particularly emphasized. Supported by the National Natural Science Foundation of China Chen Shengli: born in 1968, Ph. D.     

不同n（Zr）／m（Ti）及靶形式在不同衬底上溅射PZT薄膜的研究

分别用m(Zr)/m(Ti）配比为30／70、53／47、70／30的源材料及陶瓷块状靶和预烧粉末靶的形式，在Ag、Au、Pt衬底上溅射制取PZT薄膜，比较分析了薄膜的钙钛矿结构形成情况，所需的热处理温度及铁电特性，研究表明：靶材的配比造近30／70时较容易获得钙钛矿结构；用预烧粉末靶或用Ag衬底可降低热处理温度；用Au、Pt衬底能得到较好的电学特性。     

《全辽金文》系年、佛经标点勘误

对《金辽金文》中收录的5篇文章的系年作了考证，订正了其系年错误，并对是书26处佛经标点错误进行了辨误，同时对标点错误的佛经的内容作了解说。     

Pt／Au纳米双金属簇的制备及表征

采用硼氢化钠还原法制得聚乙烯吡咯烷酮(PVP)保护的Pt/Au纳米双金属簇,用TEM、UV-VIS吸收光谱进行了表征,从制备方法、还原顺序、金属不同摩尔比等方面对双金属簇的影响进行了研究。分别制得了Pt/Au合金及Pt/Au核壳结构的直径在2~5nm的纳米双金属簇。