"There were anecdotes before the study that geckos can't stick to wet glass. We now know it is a bit more complicated than that. What we expect to learn is going to be relevant to synthetics and their capabilities to work not only on dry surfaces, but also wet and maybe, submerged ones," Niewiarowski says. "This implies a more versatile adhesive capability."
After close study of the tiny hairs at the bottom of gecko feet that enable them to cling to surfaces, Dhinojwala and his colleagues have already developed a dry synthetic adhesive, comprised of carbon nanotubes, that outperforms nature's variety. Now, with these new findings, Dhinojwala and his colleagues are one step closer to unfolding the secrets behind gecko toe adhesion in wetness.
The researchers plan to further study the lizards in their natural habitats and in laboratory conditions that simulate them. They'll investigate grasping and release mechanisms, habits of the geckos in wet environments and other factors that enable the lizards to adhere to surfaces in wetness, such as to trees during rainfalls.
"Our goal is to go back and look at what they're doing in nature and at what kind of surfaces they are walking or running on," says Stark, noting that UA researchers have already studied such behavior of geckos in Tahiti.
|Contact: Laura Massie|
University of Akron