SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Hairs on a gecko's toe. Coloured scanning electron micrograph (SEM) showing the numerous hairs which cover the underside of a gecko's feet. These are essential to enable the gecko to cling to smooth surfaces. The hairs take advantage of Van Der Waals forces, weak intermolecular forces, to enable the gecko to stick to smooth surfaces. Geckos are nocturnal lizards, found in a wide range of habitats. They feed on insects.
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