Gecko sticking power outclassed by nanotubes

Remarkable Natural Material Surfaces and Their Engineering Potential

“…To create this superb adhesion strength, the team of researchers grew 4 by 4 mm arrays of carbon nanotubes in a way that the ends tangled with each other. The resulting structures resemble those of a gecko's setae and spatulae: the main trunk is like a seta, and the coiled end is like a spatula (Griggs 2008).…”