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Weymouth, Alfred J. ; Wastl, Daniel S. ; Giessibl, Franz J.

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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Details

DokumentenartArtikel
Titel eines Journals oder einer Zeitschrifte-Journal of Surface Science and Nanotechnology
Verlag:The Surface Science Society of Japan
Band:16
Seitenbereich:S. 351-355
Datum2 August 2018
InstitutionenPhysik > Institut für Experimentelle und Angewandte Physik > Lehrstuhl Professor Giessibl > Arbeitsgruppe Franz J. Giessibl
Identifikationsnummer
WertTyp
10.1380/ejssnt.2018.351DOI
Stichwörter / KeywordsAtomic force microscopy, Solid-liquid interfaces, Water
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 530 Physik
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-509630
Dokumenten-ID50963

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