The frog legs are used many times

You want a tape that can be used many times? Indian scientists will help you to be satisfied with a special type of duct tape, modeled after the soles of the tree frog.

It is well known that the tape will lose stickiness after being removed from a certain surface, and the glue can stick to the contact surface. That's because when you remove the tape, the structure of the glue will be broken, reducing or losing its adhesion. Now, Indian researchers have been able to overcome this by simulating the toe-liver structure of a tree-frog.

In nature, tree frogs, crickets and some other animals can adhere to surfaces easily. Why are they capable of that?

The research team, under the guidance of expert Abhijit Majumder of the Indian Institute of Technology, found that tree frog toe liver contains 'micro-groove models', which increase the adhesion of the toe on many different surfaces. And when frogs lift their feet, the surfaces remain unaffected.

The frog frog toe liver structure was simulated by experts to make the tape with high adhesion and repeated use.(Photo: AP)

Simulating this structure, the team built a tape with flexible layers with tiny grooves, which contain air or liquid, and these layers are placed just below a glue on the outside. and.

The results were surprising: the adhesion of the 'frog foot' tape increased to 30 times that of conventional tape , and after the tape was removed from the surfaces, the surfaces were still clean, not at all. sticky glue - ie the glue structure is not broken. Moreover, this tape can be used many times, not just once, or twice, as regular tapes.

The research team hopes this new technology will be used to manufacture many kinds of convenient stickers, stickers (sticker) for food, household items .

The study - published in Science on October 12, 2007 - is funded by the Indian Institute of Technology and the Ministry of Science and Technology.

Quang Thinh