2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/168500With the help of a two-dimensional model we study rolling lubrication by circular (2D fullerenes) molecules for a wide range of parameters. The conditions under which microscopic rolling friction may be effective are identified and related to the relative ingraining between substrate and molecule, the latter behaving as a nanosized cogwheel.12 figuresSoft Condensed Mattertext