Engineers at Columbia University Make a Machine Propelled by Evaporating Water

Researchers at Columbia University have found a way to collect and harness power from evaporation of water. Ozgur Sahin and his team recently published a paper in Nature Communications' journal about how it all works.

The technology makes use of the property of bacterial spores, which are like seeds that can germinate into a living microbe under the right conditions. Absent those conditions, however, they are rather good at absorbing water whenever they find it. During absorption they swell and when they lose the water they contract, and they can do this repeatedly, without much wear and tear.

The technology is far from powering our cars, but the proof of concept is developed enough to propel a small lightweight cart.

Matt Coneybeare

Matt Coneybeare

Editor in Chief

Matt enjoys exploring the City's with his partner and son. He is an avid marathon runner, and spends most of his time eating, running, and working on cool stuff.

Something wrong with this post? Let us know!

Shop Related Products…

As an Amazon Associate I earn from qualifying purchases.

Brought To You By…