Preparation of sharp gold tips for STM by using electrochemical etching method

被引：29

作者：

Baykul, MC ^{[1
]}

机构：

[1] Osmangazi Univ, Dept Phys, TR-26480 Eskisehir, Turkey

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2000年 / 74卷 / 1-3期

关键词：

electrochemical etching method; STM tip; scanning electron microscope (SEM); X-ray diffraction (XRD);

D O I：

10.1016/S0921-5107(99)00566-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gold tips were obtained from gold wire (Au) with a diameter of 0.25 mm. They were produced by electrochemical etching technique using 0.8 M-97% KCN solution. Tips were etched by applying different voltages such as 8, 12, 16, 20 V, seperately. For each different applied voltage, some of tips were washed with the distilled water. The rest of them were not washed. SEM investigated tips and elemental analysis of the apex of the tip was studied by EDX. According to SEM and TEM images, the radius of tips was estimated. Tip radius varies between 200 and 500 nm. Small amounts of K (Potassium) and Cu (Copper) elements were observed on the surface of the tips after the electrochemical reaction. In addition to that, TEM and XRD characterized tips. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：229 / 233

页数：5

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