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Science Quickly

Tiny Toe Tools Ensure Gecko Traction

Science Quickly

Scientific American

Science

4.2639 Ratings

🗓️ 15 August 2014

⏱️ 2 minutes

🧾️ Download transcript

Summary

To activate or loosen their grip on a surface, geckos extend and angle or retract tiny toe hairs that create contact points. Clara Moskowitz reports    Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

Understanding the human body is a team effort. That's where the Yachtel group comes in.

0:05.8

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0:11.0

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0:19.6

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0:22.7

.jp. That's y-A-K-U-Lt.C-O.jp. When it comes to a guide for your gut, count on Yacolt.

0:33.8

This is Scientific Americans' 60-second science. I'm Clara Moskowitz. Got a minute? As is well-known,

0:41.8

geckos sell car insurance. Oh dear. But they're also famous for their extremely adhesive feet,

0:46.7

which can keep them stuck to walls and even ceilings. Archimedes wondered how they do it. Gekylls can also

0:52.6

easily loosen their grip and break into a dash,

0:55.2

which has flummoxed physicists. But scientific stick-to-itiveness finally found the on-off switch.

1:00.5

What did my professor say? Gekko's toes are covered in thousands of tiny hairs called CET.

1:05.4

These CETA can bend to make contact with all the grooves and crevices in a surface. To adhere,

1:10.7

the CETA rely on small electromagnetic attractions

1:13.3

between molecules called Vanderval's forces.

1:16.3

Researchers created mathematical models

1:18.2

that revealed that the default mode for gecko feet is non-sticky.

1:22.0

To activate the grip, the lizards extend and angle their setae

1:25.0

to create millions of contact points with the surface.

1:27.7

Yeah, right. That makes sense.

1:29.3

The research is in the Journal of Applied Physics.

1:32.0

Scientists would love to create synthetic adhesives based on the gecko trick.

1:35.5

I'll tell you why.

...

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