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Preparation of light-atom tips for scanning probe microscopy by explosive delamination

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Hofmann, Thomas ; Welker, Joachim ; Giessibl, Franz J.
Date of publication of this fulltext: 10 Jul 2012 13:50


To obtain maximal resolution in scanning tunneling microscopy (STM) and atomic force microscopy, the size of the protruding tip orbital has to be minimized. Beryllium as tip material is a promising candidate for enhanced resolution because a beryllium atom has just four electrons, leading to a small covalent radius of only 96 pm. Besides that, beryllium is conductive and has a high elastic ...


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