| 초록 |
In adhesive system, efficient energy dissipation matrix for large energy dissipation is essential for stable and strong adhesion. But sometimes it could induce cohesive failure reason of residual on surface and non-reusability of system. Here we present bioinspired robust mechanical energy dissipation matrix which has unique micro interlocking structure. Mechanical energy dissipation is induced between elastic micro pillar and hole by concentrated local stress. Adhesion with energy dissipation matrix has 5times higher adhesion strength (14.5N/cm2), and 3times higher adhesion energy (25J/m2) than without one. Microstructure is composed by elastic material (PDMS E~2.5MPa), system has high reusability (~1000 times). This bio inspired energy dissipation system has potential to be applied other bio inspired adhesive surface, such as gecko, octopus, frog, for robust & repeatable dry adhesive system. |
