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Sliding induced adhesion of stiff polymer microfiber arrays: 1. Macroscale behaviour
by Lee, Jongho; Majidi, Carmel; Schubert, Bryan; Fearing, Ronald
Journal of the Royal Society, Interface  (10.1098/rsif.2007.1308)

Sliding induced adhesion of stiff polymer microfiber arrays: 2. Microscale behaviour
by Schubert, Bryan; Lee, Jongho; Majidi, Carmel; Fearing, Ronald
Journal of the Royal Society, Interface  (10.1098/rsif.2007.1309)

Embargoed until Jan. 23,  2008

Polypropylene microfiber array [image]	Electron microscope image of  fiber array and patch holding weight [image]	Patch supporting weight. Increasing weight increases contact area. Contact area is bright area near top of patch. [Image]
Side view of polypropylene microfiber array. [Image]	Polypropylene synthetic gecko adhesive supporting 400 gram weight. [Image]	Conceptual drawing showing how more microfibers contact glass when load increases. [Image]
Fiber array performance improves by factor of 3 after 5 uses. [Image]	Increase of  shear adhesion with sliding distance of natural gecko. [Image]	Increase of shear adhesion with sliding distance of synthetic gecko adhesive. [Image]
Testing path for natural gecko setal array. [Image]	Frictional adhesion for natural gecko setal array. Normal force goes to zero when shear force is removed. [Image]	Frictional adhesion for synthetic polypropylene microfiber array. Normal force goes to zero when shear  force is removed. [Image]