Hierarchical Microstructured Surfaces for Adhesion and Friction Control

The patent applies local quality by creating spatially varying surface energy gradients across the microstructured surface, with different regions having distinct surface energies (first distinct region with first surface energy, second distinct region with second surface energy). This allows different local areas to exhibit different adhesive properties, enabling the surface to achieve both super-high and super-low adhesive characteristics in different regions, thereby providing strong adhesive force where needed while minimizing friction damage in other areas.

The patent employs parameter changes by systematically varying the surface energy parameter across different regions of the microstructured surface. By controlling the surface energy distribution (through different microstructures, coatings, or chemical treatments in different regions), the surface can modulate its adhesive properties dynamically. This allows the surface to achieve super-high adhesion when needed while reducing frictional heating through low-adhesion regions, effectively managing the trade-off between bonding strength and thermal damage.

The patent applies segmentation by dividing the surface into multiple distinct regions with different surface energy characteristics (first distinct region and second distinct region). Each region can be optimized for specific functions - one region for super-adhesive characteristics and another for super-slippery characteristics. This segmentation allows the surface to exhibit multiple adhesive modes simultaneously, enhancing adaptability while maintaining relatively simple manufacturing processes for each individual region.