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The interactions between the gecko's feet and the climbing surface are stronger than simple surface area effects. On its feet, the gecko has many microscopic hairs, or setae (singular seta), that increase the Van der Waals forces - the distance-dependent attraction between atoms or molecules - between its feet and the surface.
The two front feet of a tokay gecko can withstand 20.1 N of force parallel to the surface with 227 mm 2 of pad area, [4] a force as much as 40 times the gecko's weight. . Scientists have been investigating the secret of this extraordinary adhesion ever since the 19th century, and at least seven possible mechanisms for gecko adhesion have been discussed over the past 17
Nano tape, also called gecko tape is a synthetic adhesive tape consisting of arrays of carbon nanotubes transferred onto a backing material of flexible polymer tape. These arrays are called synthetic setae and mimic the nanostructures found on the toes of a gecko ; this is an example of biomimicry .
Lamellae on a gecko's foot. In surface anatomy, a lamella is a thin plate-like structure, often one amongst many lamellae very close to one another, with open space between. Aside from respiratory organs, they appear in other biological roles including filter feeding and the traction surfaces of geckos. [1]
This resulting fouling is a common problem for reversible adhesives modeled after the gecko toe pad. Digital hyperextension, or a movement of the toe with each gecko step, contributes to the self-cleaning. [53] A surface or system that mimics this dynamic self-cleaning process has yet to be developed.
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Lesser rough-snouted giant gecko, Rhacodactylus trachycephalus; Willi's giant gecko, Rhacodactylus willihenkeli [2] A revision of the giant geckos of New Caldonia found weak support for inclusion of some taxa allied to this genus, and these have been assigned to new combinations: [3] Correlophus ciliatus, crested gecko; formerly R. ciliatus
For P. rangei, the Namib sand gecko, their webbed feet may serve as sand shoes that enable them to move atop sand dunes. [32] However, some ecologists believe that their webbed feet do not aid aboveground locomotion, but are mainly utilized as shovels for burrowing and digging in the sand. [33] In salamanders, most species do not benefit from ...