PREPARATION AND CHARACTERIZATION OF TIPS FOR SCANNING TUNNELING MICROSCOPY OF BIOLOGICAL SPECIMENS

被引：12

作者：

HACKER, B ^{[1
]}

HILLEBRAND, A ^{[1
]}

HARTMANN, T ^{[1
]}

GUCKENBERGER, R ^{[1
]}

机构：

[1] MAX PLANCK INST BIOCHEM,W-8033 MARTINSRIED,GERMANY

来源：

ULTRAMICROSCOPY | 1992年 / 42卷

关键词：

D O I：

10.1016/0304-3991(92)90475-Y

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

For scanning tunneling microscopy of biological samples a thin, sharp tip is necessary to resolve the highly corrugated structures of biomacromolecules. By DC etching of tungsten wire in NaOH we obtain tip radii of 5 nm or less in more than 50% of all cases. For tunneling in fluids these tips are insulated by a wax-coating to minimize faradaic currents. Resulting leakage currents are in the range of 5 to 50 pA.

引用

页码：1514 / 1518

页数：5

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