| 초록 |
Bio-inspired artificial attachments from various biology systems have extensively applied in various fields such as smart dry-adhesives, medical patches, and robotics. To improve reversible dry and wet adhesion on rough surfaces, the intimate contact between two different surfaces is essential for the amplification of van der Waals force, capillarity, and suction effect. Here, we demonstrated octopus sucker-like 3-dimensional microstructures which resulted in high adhesion in dry, water, oil condition. The various unique micro-suckers can be fabricated by simple replication and partial-curing techniques with polydimethysiloxane and UV-curable poly-urethane. We analyzed the adhesion in various conditions depending on the hierarchical shape of suckers and preload effect. We proceed to demonstrate that the thin patch which has densely populated micro-sucker is capable of high adhesion on human skin with beads of sweat that appear on the surface of skin when one are hot, ill/sick or afraid |
