Nature prompted scientists a new way to protect ATMs

Employees ETH Zurich разработали special film which is damaged produces very hot foam for protection against malicious acts. Such technologies offer scientists use to protect against vandalism and theft at ATMs.

The developed film is a huge set of microscopic plastic cells, stacked and filled with hydrogen peroxide and manganese dioxide. When the honeycomb structure is damaged, the two substances are mixed and create foam, whose temperature is 80 ° C.





On this development scientists inspired defense mechanism Жука-бомбардира. The essence of the mechanism is that feeling threatened insect spray produces a powerful chemical that causes the retreat of any predator. The spray consists of hydroquinone and hydrogen peroxide (which are stored in two separate glands insect) is mixed in a tank and then heated to 100 ° C and flies toward the aggressor.

Author Development, Professor Wendelin Ian Stark believes his foam is perfect to protect ATMs from thieves and vandals as well as current protection options for cash machines are very complex and expensive to manufacture, and the cost of the film will vary between $ 40

As part of the test, scientists added a plastic honeycomb blue dye and DNA nanoparticles. Once the film was damaged, she released the paint, making notes useless. Moreover, every banknote has been tagged DNA particles, potentially making them more traceable.



 

Source: habrahabr.ru/post/222707/

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