微电极

In this study, a Y-shaped asymmetric pairs of microelectrodes with a sudden expansion microchannel is used to separate and trap the micro particles in order to get the better inspection.

本研究设计一具不对称电极对的Y型渐扩微管道，先观察微粒子的分离状况，再针对微粒子进行撷取，以期能达到较佳的检测效果。

A film-forming additive, vinyl ethylene sulfite with both vinylene group and sulfite group, affects the electrochemical performance of carbonaceous mesophase spherules and LiFePO4 electrode.

研究了具有不饱和双键和亚硫酸酯双官能团的乙烯基亚硫酸乙烯酯作为锂离子电池电解液成膜添加剂对中间相碳微球和LiFePO4电极电化学性能的影响。

For Et4NBF4/AN, the least ionic transfer and diffusion resistance led to an excellent capacitance retention property. For Bu4NBF4, due to the larger solvated ion diameter and higher ion transfer resistance, the capacitive performances were inferior to those of Et4NBF4 in terms of specific capacitance and power density.

实验结果表明：对于高微孔比率的电极材料，由于Et4N+的溶剂化离子半径小于Et4N+的溶剂化离子半径，因此，Et4NBF4体系下的电荷存储密度和有效表面利用率更高，电容性能优于Bu4NBF4。

Because of no electrode wear in this process the micrometer scale metal wire can be used as the wire electrode in WEMM, and the micrometer or tens micrometer structure can be fabricated.

由于原理上阴极不会损耗，采用微米级直径的电极丝，可加工出微米至数十微米尺度的复杂微结构件。

However, because of the natural characteristics of the micro and small hole EDM, such as weak discharge energy, high pulse power supply frequency, unstable spark discharge states and small discharge gap, etc., there are still some key technical difficulties in its machining process need to be solved: the difficulties in real-time discharge states detection, in accurate control of machining process, in prediction of discharge states, in improvement of machining system precision and in on-line preparation of micro electrode, etc.

但是由于微细及小孔电火花加工自身具有的放电能量极微、脉冲电源频率高、难以获得稳定的火花放电状态以及放电间隙极小等固有特性，决定了其加工过程仍然存在放电状态实时检测方法单一、加工过程难于准确控制、放电状态难于预测、加工系统精度提高困难和微小电极在线制备困难等关键性技术难点，亟待突破和解决。

The measurement of scanning Kelvin probe indicated that before immersion, there was large potential drop between copper and soldering tin.

表面微区电位分布测试发现，铜/焊锡电极在浸泡前存在较大的电位差，但焊缝处电(来源：ABC90论文97网www.abclunwen.com)位差较小。

Part Ⅰ:A glassy carbon electrode is modified with ruthenium oxide/nafion film in pH 2.0 buffer solution. Cyclic voltammetry, electrochemical quartz crystal microbalance, rotatable ring disk electrode and amperometric techniques were used to study the electrochemical properties of the RuO/Nf film.

中文摘要本研究主要分为三部分来讨论，第一部份利用利用玻璃碳电极在pH=2缓冲溶液中修饰氧化钌/Nafion 薄膜，实验中使用了循环伏安法、电化学石英晶体微天平、旋转环碟电极法及扫描式电子显微镜探讨其电化学性质及特性。

A novel inlaid super-thin microcrystalline cellulose modified carbon paste film electrode was fabricated by direct inlaying microcrystalline cellulose modified carbon paste film on the surface of nichrome substrate.

以镍铬合金为基体，在其表面通过直接嵌入微晶纤维素修饰的碳糊膜，构建了嵌入式超薄微晶纤维素／碳糊电极。

Conditions affecting the polymerization were studied and the optimum condition was given. The Polymer-coated microdisk electrode showed a good Nernst response to pH in the range of 2.5～11. The results of pH determinaton in real samples were also satisfactory.

制得的聚苯胺修饰微盘电极对pH有能斯特响应，稳定性好，用于酸碱滴定和天然水测定结果满意。

In order to disclosure the reason why the electrocatalysis activeness and selectivity droped after being used several hundred hours continuously, the x-ray diffraction, scanning electron microscopy and energy dispersive spectroscope have been used to characterize the surface condition variations of Monel metal. The results indicated: Monel metal belongs to the Cu-Ni alloy around the electrolysis experiment.And after being used for 600hr, the surface layer element composition and geometry distribution of the alloy changed, namely in the alloy the Cu element /which superficial free enthalpy was smaller,"concentrated" to the alloy surface,and formed one kind of marble structure microcrystallite.Thus the electrode surface becamed rough a

为了揭示蒙乃尔合金阴极在连续使用数百个小时后电催化活性剂选择性下降的原因，采用X射线衍射仪、电子扫描电镜和电子能谱分析仪对电解实验所用的蒙乃尔阴极材料在电解实验前后的表面状态进行了表征，结果表明：所使用的蒙乃尔合金阴极材料在电解实验前后均属于Cu-Ni合金，使用600hr后，由于表面层元素组成和几何排布发生了变化，即合金中表面自由焓较小的Cu元素向合金表面&富集&，形成一种大理石结构的微晶，表面粗糙、不均一，这是造成其对硝基苯电还原的催化活性及选择性随着使用时间延长而逐渐下降的主要原因，同时也为此类电极的修饰改进提供了方向。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。