Manipulation of individual water molecules on CeO2(111)
Autor(en): | Torbruegge, S. Custance, O. Morita, S. Reichling, M. |
Stichwörter: | ATOMIC-FORCE MICROSCOPY; LATERAL MANIPULATION; Physics; Physics, Condensed Matter; STM; SURFACES; TIP | Erscheinungsdatum: | 2012 | Herausgeber: | IOP PUBLISHING LTD | Journal: | JOURNAL OF PHYSICS-CONDENSED MATTER | Volumen: | 24 | Ausgabe: | 8 | Zusammenfassung: | Water molecules adsorbed on the CeO2(111) surface are investigated by non-contact atomic force microscopy (NC-AFM) at several tip-sample temperatures ranging between 10 and 300 K. Depending on the strength of the tip-surface interaction, they appear as triangular protrusions extended over three surface oxygen atoms or as small pits at hollow sites. During NC-AFM imaging with the tip being close to the surface, occasionally the transfer of molecules between tip and surface or the tip-induced lateral displacement of water molecules to equivalent surface lattice sites is observed. We report how this situation can be exploited to produce controlled lateral manipulations. A protocol to manipulate the water molecules between pre-defined neighbouring equivalent adsorption sites of the regular lattice as well as across a surface oxygen vacancy is demonstrated. |
ISSN: | 09538984 | DOI: | 10.1088/0953-8984/24/8/084010 |
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