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"Leave no trace . " This old maxim of covert military operations is getting closer to becoming a reality after the discovery of a new material that, like the legend of vampires, destroys itself when it comes into contact with sunlight or when someone , remotely, press a button to make it volatilize.

"It is not an object that slowly degrades after a year, such as the biodegradable plastics that we see in the market," says one of its inventors Paul Kohl in a press release. "It is a polymer that disappears in an instant when you press a button that starts an internal mechanism or when it comes into contact with the sun ."

Due to these properties, the material has aroused the interest of the US army since, for example, it would allow the construction of drones or other army vehicles.

"At first we made the material only photosensitive for ultraviolet lights so that we could work with the material in a well-lit room with fluorescent light and it worked well, it was stable." However, when exposed to sunlight, it vaporized or returned to its liquid form .

In parallel, they were working on a variant of this material that was sensitive to artificial light. "We design polymers for other uses where when you enter the room and turn on the light, they disappear ."

A process of disappearance of the material known as depolymerization that, in addition, scientists have learned to control over time. "We are also able to delay depolymerization for a specific amount of time [once the light or self-destruct mechanism is applied] so that you can keep it in the dark until you need to use it and, when you use it during the day, you can hold up to three hours before breaking down, "they say.

A material that, in addition to military purposes, can be used in other areas such as the observation of natural species and environments with materials that have the least possible environmental impact.

According to the criteria of The Trust Project

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