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| Microscopy and Microanalysis » Instrumentation » APFIM | ||
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Atom probe field ion microscopy (APFIM) The analysed volume is cone shaped, typically with a diameter of 2-15 nm and a length up to several hundred nanometres. The 3-dimensional atom probe (3DAP) has a position sensitive detector, which gives the possibility of reconstructing the analysed volume in three dimensions, with special software. In the 1-dimensional atom probe (1DAP), the diameter is only a few nanometres and the chemical identity is only determined in one dimension (depth profile). By introducing noble gas (Ne, He) into the chamber of analysis, field ion microscopy can be conducted. When the DC voltage is applied to the specimen, the gas atoms are ionized at the specimen surface. The ionized atoms are projected radially to a screen where the field ion image is formed. This technique has a magnification in the order of one million times and the images have an atomic resolution We have two APFIMs: 1DAP 3DAP |
2009 |
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Okt 1T 2F 3L 4S 5M41 6T 7O 8T 9F 10L 11S 12M42 13T 14O 15T 16F 17L 18S 19M43 20T 21O 22T 23F 24L 25S 26M44 27T 28O 29T 30F 31L |
Nov 1S 2M45 3T 4O 5T 6F 7L 8S 9M46 10T 11O 12T 13F 14L 15S 16M47 17T 18O 19T 20F 21L 22S 23M48 24T 25O 26T 27F 28L 29S 30M49 |
Dec 1T 2O 3T 4F 5L 6S 7M50 8T 9O 10T 11F 12L 13S 14M51 15T 16O 17T 18F 19L 20S 21M52 22T 23O 24T 25F 26L 27S 28M53 29T 30O 31T |
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