影响直流高压MLCC表面放电的因素

通过悬浮内电极排布、加大端头间距、使用自制专用表面整理剂对高压MLCC表面彻底清洁等工艺措施,对高压MLCC表面放电现象有很大改善,并显著提高了其耐电压性能。采用单悬浮电极排布、3.2mm端头间距,并用自制专用表面整理剂处理,制作1808规格、容量100pF、工作电压3000V的NP0特性MLCC产品,在6000V下没有表面放电现象,击穿电压在10000V以上。     

谷胱甘肽-Cu2+/PAn膜修饰电极的制备及表征

以谷胱甘肽(GSH)自组装膜电极为基体制备GSH-Cu^2 ／PAn膜，利用分子印迹技术在电化学聚合过程中将铜沉积到聚苯胺的孔穴中。并用循环伏安法和电化学石英微天平监测电极的响应。实验结果表明制得的电极修饰膜内存在Cu^2 的离子通道，使得铜离子的掺杂易于进行；聚苯胺氧化还原峰与阴离子的掺杂及铜离子的掺杂有关。     

铁氰化镧修饰电极的制备及表征

An electroactive polynuclear inorganic compound of rare earth metal hexacyanoferrate, lanthanum hexacyanoferrate (LaHCF), was prepared by electrochemical deposition on the surface of a glassy carbon electrode with a potential cycling procedure. The cyclic voltammogram of LaHCF exhibits a pair of well-defined redox peaks with the formal potential of 208 mV (vs. SCE) at a scan rate of 100 mV/s in 0.2 mol/L NaCl solution and the redox peak currents increase linearly with the square root of the scan rate up to 1000 mV/s. The effects of the concentration of supporting electrolyte on the electrochemical characteristics of LaHCF were studied by voltammetry. LaHCF was also characterizated by scanning electron microscope (SEM), FTIR and XPS techniques.     

PTC陶瓷欧姆接触银电极的研究

影响银电极欧姆接触的主要因素是:电极浆料的组成和形成过程。通过实验,获得了接触电阻小,表面光洁,附着力和焊接能力均好的欧姆接触银电极。探讨了PTC陶瓷欧姆接触电极材料的评价方法,认为采用接触电阻比ρ_c/ρ_0作为比较参数较为合适。     

A Novel Micro—hole Electrode Used to Investigate Electron Transfer Reactions at ITIES

A novel micro-hole electrode was fabricated to investigate the electron transfer reaction at the interface between two immiscible electrolyte solutions (ITIES). The electron transfer reaction between feero/ferricyanide in aqueous phase(W) and ferrocene in 1,2-dichloroethane (O) phase was studied as a test experiment. The results showed that the diffusion coefficient obtained from the micro-hole electrode was consistent with that obtained at macro-interface. Due to its simplicity and the very small IR drop it will be a useful tool for the study of ITIES systems.     

利用高频和超高频电磁能的无电极光源（一）

本文介绍长寿命超高频无电极气体放电灯(包括Solar型硫灯)新式照明设备、以及QL、Genura、Endura型感应荧光光源和采用高频放电变压器灯理论、实际运用及发展趋势的问题。     

Effects of Relative Orientation of Molecules on Electron Transport in Molecular Devices

Effects of relative orientation of the molecules on electron transport in molecular devices are studied by the non-equilibrium Green function method based on density functional theory. In particular, two molecular devices with planar Au7 and Ag3 clusters sandwiched between the Al（100） electrodes axe studied. In each device, two typical configurations with the clusters parallel and vertical to the electrodes are considered. It is found that the relative orientation affects the transport properties of these two devices completely differently. In the Al（100）- Au7-Al（100） device, the conductance and the current of the parallel configuration are much larger than those in the vertical configuration, while in the Al（100）-Ag3-Al（100） device, an opposite conclusion is obtained.     

碲镉汞环孔p-n结反常特性分析

在HgCdTe环孔p-n结器件的研制过程中，经常会出现一些反常现象，如负的开路电压和负的光电压等。现对上述现象进行理论分析，并通过大量实验对上述反常现象进行了验证。