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Advances in AFM: Seeing Atoms in Ambient Conditions
Weymouth, Alfred J., Wastl, Daniel S. und Giessibl, Franz J.
(2018)
Advances in AFM: Seeing Atoms in Ambient Conditions.
e-Journal of Surface Science and Nanotechnology 16, S. 351-355.
Veröffentlichungsdatum dieses Volltextes: 04 Nov 2021 07:02
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.50963
Zusammenfassung
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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| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | e-Journal of Surface Science and Nanotechnology | ||||
| Verlag: | The Surface Science Society of Japan | ||||
|---|---|---|---|---|---|
| Band: | 16 | ||||
| Seitenbereich: | S. 351-355 | ||||
| Datum | 2 August 2018 | ||||
| Institutionen | Physik > Institut für Experimentelle und Angewandte Physik > Lehrstuhl Professor Giessibl > Arbeitsgruppe Franz J. Giessibl | ||||
| Identifikationsnummer |
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| Stichwörter / Keywords | Atomic force microscopy, Solid-liquid interfaces, Water | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-509630 | ||||
| Dokumenten-ID | 50963 |
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