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Roughness and orientational order in thin films of anisotropic particles areinvestigated using kinetic Monte Carlo simulations on a cubic lattice.Anisotropic next-neighbor interactions between the lattice particles werechosen to mimic the effects of shape anisotropy in the interactions of disc- orrod-like molecules with van-der-Waals attractions. Increasing anisotropy leadsfirst to a preferred orientation in the film (which is close to thecorresponding equilibrium transition) while the qualitative mode of roughnessevolution (known from isotropic systems) does not change. At stronganisotropies, an effective step-edge (Ehrlich-Schwoebel) barrier appears and anon-equilibrium roughening effect is found, accompanied by re-ordering in thefilm which can be interpreted as the nucleation and growth of domains oflying-down discs or rods. The information on order and roughness is combinedinto a diagram of dynamic growth modes.

Interplay of orientational order and roughness in simulated thin film growth of anisotropically interacting particles