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Advances in AFM: Seeing Atoms in Ambient Conditions
Weymouth, Alfred J., Wastl, Daniel S. and Giessibl, Franz J.
(2018)
Advances in AFM: Seeing Atoms in Ambient Conditions.
e-Journal of Surface Science and Nanotechnology 16, pp. 351-355.
Date of publication of this fulltext: 04 Nov 2021 07:02
Article
DOI to cite this document: 10.5283/epub.50963
Abstract
It's hard to imagine that we can take a splinter and sharpen it down to the atomic level. It's even more impressive that we can bring this sharp tip close to a surface, scan it over the surface, and be sensitive to the tiny forces between the apex atom and individual atoms on the surface. Measuring and interpreting these forces is the goal of high-resolution atomic force microscopy (AFM). We ...
It's hard to imagine that we can take a splinter and sharpen it down to the atomic level. It's even more impressive that we can bring this sharp tip close to a surface, scan it over the surface, and be sensitive to the tiny forces between the apex atom and individual atoms on the surface. Measuring and interpreting these forces is the goal of high-resolution atomic force microscopy (AFM). We perform frequency-modulation AFM (FM-AFM), in which we oscillate the tip and record the change in frequency as a measure of the interaction with the surface. FM-AFM performed in vacuum with stiff sensors has lead to amazing discoveries. Now, we are returning to the challenge of imaging samples in device- and biologically-relevant conditions. This contribution summarizes work that was performed in the Giessibl group to image with atomic resolution in ambient and liquid environments. We demonstrated atomic resolution with the qPlus sensor on KBr, and followed this with investigations on graphitic surfaces. We have also shown single-atomic defects and steps on the calcite surface.
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Details
| Item type | Article | ||||
| Journal or Publication Title | e-Journal of Surface Science and Nanotechnology | ||||
| Publisher: | The Surface Science Society of Japan | ||||
|---|---|---|---|---|---|
| Volume: | 16 | ||||
| Page Range: | pp. 351-355 | ||||
| Date | 2 August 2018 | ||||
| Institutions | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl | ||||
| Identification Number |
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| Keywords | Atomic force microscopy, Solid-liquid interfaces, Water | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-509630 | ||||
| Item ID | 50963 |
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