The fascination with the ability of geckos to scamper up smooth walls and hang upside down from improbable surfaces has entranced scientists at least as far back as Aristotle, who noted the reptile's remarkable feats in his History of Animals.
But it wasn't until about 15 years ago, when researchers were definitively able to attribute the gecko's powers of adhesion to nanoscale threads in the gecko's toes, that the practical possibilities of biomimicry at microscopic levels caught the imagination of researchers in earnest.