Molecular-dynamics simulation of lateral friction in contact-mode atomic force microscopy of alkane films: The role of molecular flexibilityP. Soza, F. Y. Hansen, H. Taub, M. Kiwi, E. Cisternas, U. G. Volkmann and V. del CampoEPL, 95 3 (2011) 36001DOI: https://doi.org/10.1209/0295-5075/95/36001