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| Source: Youtube |
The scientists from Columbia university has come-up with some idea that is not usual. A method of extracting the energy from the natural process called Evaporation. The spores which are dry,dormant bacteria. They expand when they absorb moisture and contract when they lose the moisture. The scientists took it as an opportunity. By controlling the moisture content the movement can be controlled . But as the spores are very small and is about a micron long. To make an inch, twenty-five thousand of them have to be laid end to end. So, the scientists made a device to bridge the gap between impossibly tiny to small, to power devices. The devices are initially a toy car to demonstrate that the idea will work.
