Anyone who has seen a gecko knows they can climb walls. But these common berries can run over water as soon as possible; They can move on strong ground. But although we know how a straightforward land is just geckos that use a few small yards on their legs called setae, as they are, Continue to avoid the water, it has been a mystery – so far. Recently, my colleagues and my research have explained what sets out geckos a & # 39; Using a variety of ways to play this amazing wonder.
The ability to walk on water is recorded in smaller animals such as the striping water, which is sufficiently light to be kept up with water surface tension, the force between the surface molecules at the surface. At the same time, larger animals, such as the grebe, can walk on water because they are powerful enough to clean their surface with legs as they run. The quick movement will push the underwater under the bottom, and # 39; create an air pocket around it. The force is going up when this pocket is pushed under the water that is; keep the animal on the surface.
But geckos are usually the size that falls between these two sections. They are too weak to keep them up using surface slates on their own and too heavy to leave the surface of the water without breaking. But their blended waters run on the ones that are familiar with other newts that are, running on water, the basilisk (or "Jesus' laird"), who is responsible for the slapping.
Original calculations were verified, and a video analysis confirmed, differs from other species that move at the surface of the water, and Using a variety of ways to move faster on the top of the water that they can do by swimping through. By examining videos of gheckos a & # 39; moving across the water, we found that their game was similar to those who were a basilisk. Each step means "# &; subtracting the air through, & # 39; squeeze the surface, and whip underwater.
But unlike basilisks, which do not affect changes in water surface tension, our tests showed that the reduction of geckos and the height of the head was cut separately when we put glass into the water, # 39; reduce the surface tension. This includes that they are at least a & # 39; Use the forces between the water molecule to stay above the surface.
We also found that geckos are essential to use a hydrostat force mixture (which impacts on the so-called water) and a hydraulic force (the motion created by moving over the surface of the water as in a motor-driven motor boat). Together, these forces generate additional construction for the gecko, a semi-planned state.
A climb in the tail
To be creative in this multi-functional manner, geckos can only keep the head and the torso above the water, leaving the tailes to the bottom; pull down. Being able to move almost as soon as it is at land when almost half of your body is underwater and its; Facing more effort and getting rid of forces is great – just ask Michael Phelps.
Geckos will manage this by & # 39; using the tail, which is already shown to help them move around obstacles, jump and escape raiders. It can be seen from above above while it's a & # 39; traveling over the water, the geck can resemble a crocodile, moving its body and tail with a wavelike movement to create a movement to pull the water back.
Our research demonstrates the need for a complex and skilled mix of corporate methods for moving large-scale livestock on the surface of the water that they did not; Thinking only in larger and smaller animals. But it is also possible to make better designs for animal-driven robots.
Geckos's previous checks have been encouraging several such "biometric" attempts, from better themes to a robotic (and beautifully adorable) car, which are appropriately named Tailbot. We hope that a better understanding of how animals can travel over a complex laptop can be improved; Put on robots that can use these methods to move both land and water to the high performance seen in geckos.
Jasmine Nirody, Post-Doctoralil Research Advisor in Biophysics, Oxford University
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