Washington, Aug 13 ANI | 2 months ago

A new research has developed a model that defines how geckos, spiders and some insects move, cling to ceilings, and defy gravity without any efforts.

The research conducted by the Oregon State University showed that there was a amazing mechanism in the toes of geckos that used tiny, branched hairs called "seta" that could instantly turn their stickiness on and off, and even "unstick" their feet without using any energy.

Alex Greaney, an assistant professor in the OSU College of Engineering said that these were really enthralling nanoscale systems and forces at work and it was based not just on the nature of the seta but the canted angles and flexibility geckos had, and ability to work under a wide range of loading conditions.

Greaney said that it was the minimal amount of energy expended in the whole process, as a gecko could race across a ceiling with millions of little hairy contact points on its feet turning sticky and non-sticky in a precisely integrated process.

Geckos' feet are, by default, non-sticky, but the stickiness can be activated by a small shear force to produce this surprisingly tough form of adhesion.

The study is published in the Journal of Applied Physics.

(Posted on 13-08-2014)

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