Adhesion of bioinspired micropatterned surfaces: effects of pillar radius, aspect ratio, and preload.
Inspired by biological attachment systems, micropatterned elastomeric surfaces with pillars of different heights (between 2.5 and 80 microm) and radii (between 2.5 and 25 microm) were fabricated. Their adhesion properties were systematically tested and compared with flat controls. Micropatterned surfaces with aspect ratios above 0.5 were found to be more compliant than flat surfaces. The adhesion significantly increases with decreasing pillar radius and increasing aspect ratio of the patterned features. A preload dependence of the adhesion force has been identified and demonstrated to be crucial for obtaining adhesives with tunable adherence.
Greiner
Christian
C
Max Planck Institute for Metals Research, Heisenbergstrasse 3, 70569 Stuttgart, Germany.
Campo
Aranzazu Del
AD
Arzt
Eduard
E
D000268:Adhesiveness; D000269:Adhesives / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning
D000269:Adhesives