Zusammenfassung
Atomic resolution on molecules was obtained by employing functionalized tips, that is, deterministic chemical modifications of the last tip atoms, for NC-AFM. The most widely used tip fuctionalization for this purpose to date is a single CO molecule. Here we review the contrast mechanism and compare different tip functionalizations. Furthermore, we describe the use of NC-AFM with functionalized ...
Zusammenfassung
Atomic resolution on molecules was obtained by employing functionalized tips, that is, deterministic chemical modifications of the last tip atoms, for NC-AFM. The most widely used tip fuctionalization for this purpose to date is a single CO molecule. Here we review the contrast mechanism and compare different tip functionalizations. Furthermore, we describe the use of NC-AFM with functionalized tips for the identification of molecular structures, the determination of molecular adsorption geometries, bond-order discrimination, and for Kelvin probe force microscopy with sub-molecular resolution.