Science

Bacteria Control Ventilation Flaps in Sports Suits

You must not take off these shirts, if one is too hot: American researchers have incorporated inserts made from living material into a clothing fabric that open when the wearer of the garment begins to sweat. Bacilli, which in the material ensure the cooling of fresh air. The Japanese know it actually by a traditional court here.

The bacterium “Bacillus Subtilis Natto” is a subspecies of the Hay Bazille (Bacillus Subtilis) and is used in Japan to produce a traditional court from fermented soybeans called “Nato”. The bacteria settle on rice straw and ferment the cooked soybeans, which were traditionally is wrapped to the manufacture of NATO.

Bacteria Control Ventilation Flaps in Sportssuits_
The rod-shaped bacteria of natto stretch depending on the moisture content in their environment in cold weather from and change together with heat.

The rod-shaped Unicells has yet another feature that researchers have only now discovered: depending on the moisture content of its environment it expands when it’s cold and pulls together with heat.

This Bacteria Control Ventilation Flaps in Sportssuits as Body heat will open them automatically.

Under the project name “bioLogics” have teamed up to researchers, engineers, and designers at the US Massachusetts Institute of technology (MIT) and use made this behavior of bacteria.

Bacteria Control Ventilation Flaps in Sportssuits
Spacy: American researchers have incorporated into a clothing fabric flap of living material. Open, when the carrier begins to sweat. Photo: Rob Chron / MIT Media Lab

They developed a kind of “Second skin” that can regulate the body temperature of the wearer: warms him and he starts to sweat, open artificial ventilation flaps in the second skin, which are controlled by living bacteria. Cools the skin of the wearer, the doors will close again.

Second skin in the organic print Verfaren

The natto bacteria are bred in the laboratory and harvested. As two films the developer track, it is processed and incorporated as flaps in portable material in a special organic printing process to a bio-film. The synthetic organic skin directly on human skin is worn as a second skin.

The bacilli in the valves react to body temperature and sweat: where human skin heats up and increases the production of sweat, the bacteria contract, so that the doors roll up and open it.

The sweat can evaporate and cool the skin. The skin is cool, again spread the bacteria in the biofilm, the flaps again unwind and close the holes in the “second skin”.

In cooperation with the manufacturer new balance, the researchers of the “tangible media group” of the “MIT Media Lab” have developed prototypes of sports clothing from the synthetic organic skin. In the presentation, dancers wear futuristic tops with inserts on the back, resembling the skin of large lizards. When sports fashion could actually come with ventilation flaps of live bacilli on the market, the developers not forecast but still.

Clothing of the Japanese group’s Foxfire which repels mosquitoes or kills is already on the market. It is produced from the high-tech material Scoron. An insecticide is incorporated into the fibres, that still works even after multiple washing of the clothes.