Geckos, apart from being skilled climbers, can be attached to each surface, which includes small hair structure structures. Now it turns out that the small lizards can also be cleansed on the surface of the water to prevent prey in large speeds. They can not do too long; the necessary energy expenditure is very high. But it's amazing. Scientists believe that the mechanisms behind the Basque Country have been determined, published in a new paper Cell Biology.
When the project was co-authored by Ardian Jusufi, then at Berkeley's biophysicist at the University of California at Robert Full's laboratory, he went to Singapore's vacation during the monsoon season. One day, after heavy rainstorms, he captured gecko freshwater to escape a predator on the video. He performed amazing movies in the laboratory when everyone was shown. "It was super strange and unexpected, so of course, we had to test this," says former Secretary of the Board, Jasmine Nirody, former student, University of Rockefeller and University of Oxford.
Various creatures allow water to travel in nature, but they use different mechanisms according to their size. Small and light water, for example, depends on surface voltage while maintaining superficial sleep. The feet of the Basilisk are heavier and heavier jaws, creating air bubble pockets. The standard theoretical calculations establish very strict limits for a small animal to use the surface tension and reduce the surface slowdown mechanism.
Geckos has fallen somewhere. The sizes are large enough to be based solely on surface voltage, and it is very small to sink enough water to create sufficient force throughout the surface of the water. And yet, they can somehow achieve the speed of lightning speed, almost a meter a second. That is why Fulleko wanted to study more.
They used the laser cutters to enter and exit a large plastic box to make a water tank, and then built two wooden ramps in their Asian geckos house,Hemidaktilo platyurus) easy to get in and out of the water. Great high-speed cameras were placed on top and side sides to catch the movement. Geckos would take off the exit, and the team members would lighten their hair to escape.
Geckos has developed a set of complicated mechanisms to walk with water.
It turns out that the Geckos have developed a series of complicated mechanisms to drive water. There are two goals to cross the water: maintaining a body surface and advancing propulsion. First, the gecko combines surface surfaces and voltage tensions, accompanied by the water-soluble hydrophobic acid with water, according to Nirody. A sour water will sit on the gecko skin.
If it is removed from water, it reduces the trace, because the geckos make it easier to get immersed in full. Likewise, they use a mixture of body and hair, like swim. "If you look up, I think it's almost rising," says Nirody. "And then you look at one side and you realize that you are the upper body and the legs are completely out of the water, although they are still practicing a swimming movement."
Surfactant (dish soap) has added surface surfactant to its surface capacity in superficial capacity. Surface tension water molecules stick together (molecular attachment), creating solidarity film, keeping light on light creatures. Adding soap to the molecule causes the loss of the machine. It will tighten the water plate in a soap and tightens it on the surface tension. But a basilisk lizard is not affected, since it is completely based on the surface of the surface.
Once again, the geckos have fallen. They had no bottom, but Nirody et al. Incorporating water into the water reduced the geckos speed, probably because the bodies were much smaller in water, due to lower surface tension. "We could not keep whole body weight by theoretical calculations alone," said Nirody. This test has been proven.
Geckos showed interesting reactions on water flavors. Approximately, half the effort to swim as much as possible would be doubled, albeit at a very serious speed. The other half, after the first stroke, simply left and planked, sinking below. Geckos can hold his breath in a few minutes, so there is no immediate danger, even if the team members rescue in 30 seconds. "We constantly announce that we do not stop away in time, from plunging slowly through a predator, it is better to hide and keep breathing under water," says Nirody.
One of the objectives of this research is to improve the design of bio-inspired robots. The authors will realize that working with modeling of a robot with the lizard basil, would require a lot of energy and active stabilization functionally. A wavy box similar to Gecko helps the secondary problem and strengthens propulsion. Gecko has a hydrophobic structure with a similar structure in the surface, which would greatly reduce traction. "Nature has taught us so much," says Nirody. "To build and learn all these stunning machines".
DOI: Current biology, 2018. 10.1016 / j.cub.2018.10.064 (about DOI).