RT Journal Article T1 Anisotropic surface coupling while sliding on dolomite and calcite crystals A1 Pina Martínez, Carlos Manuel A1 Miranda, Rodolfo A1 Gnecco, Enrico AB High-resolution friction force microscopy has been performed on the (104) surfaces of dolomite and calcite in deionized water. The two rows of oxygen atoms alternating in a zigzag way on top of both surfaces are resolved with similar contrast while scanning along the [421] direction. Along the [010] direction, only one row is resolved, provided that the normal loading is large enough. The direction-dependent interaction between the probing tip and surface atoms is explained by numeric calculations based on the Prandtl-Tomlinson model. PB American Physical Society SN 0163-1829; 1095-3795 YR 2012 FD 2012 LK https://hdl.handle.net/20.500.14352/42843 UL https://hdl.handle.net/20.500.14352/42843 LA eng DS Docta Complutense RD 14 dic 2025