Although adhesive biomimetic textures have been extensively studied during the last decades, the natural combination of different micro-textures in some insects is still of interest due to the unique ability to optimize their adhesion and friction in different environmental conditions.

This study presents a unique manufacturing method for creating combined textures of microfibril adhesive terminals of different shapes. Using DLP (Digital Light Processing), 3D printing, and unique design, isotropic samples containing a combination of micro-spatulae, and micro-mushroom textures were created.

This work examines the tribological performances of combined micro-textures under different traction velocities and normal loads. Different power laws are proposed to link the loading/unloading velocities with the generated detachment force and the friction coefficient. The behavior of the combined textures can be approximated by merging existing models that describe the boundary cases of 0° and 90° between the load and unload directions.