Fig. 2.

The surface response to mechanical load. A) No cohesive failure of the porous structure was observed in the lap shear tests. B) The laser-structured surfaces (Porous) showed significant higher lap shear strengths; p = 0.0079 (n = 5). D) A comparable performance was achieved in the pull-off tests of the surfaces without and with structuring. C) The difference in pull-off strength was not significant (n = 5). E) The cohesion under bending was tested by 4-point bending and no peeling was observed after bending. F) Comparable forces were detected (n = 3). G - I) Instead of surface peeling, an impact force of 20 N resulted in a deformation of the surface. The scratch pattern on the Porous structure (H, I) was comparable to the CTRL surface (G) (representative pictures; total n = 3).