Geckos' Sticky Secret? They Hang by Toe Hairs (Live Science)
"Gecko toes are well-studied and their sticky properties have inspired some incredible technology, such as stitch-free ways to seal wounds and sticky handheld paddles that may help soldiers scale walls someday."
Evidence for van der Waals adhesion in gecko setae (PNAS)
"Geckos have evolved one of the most versatile and effective adhesives known. The mechanism of dry adhesion in the millions of setae on the toes of geckos has been the focus of scientific study for over a century."