Gallery: MIT Develops Polymer Film That Harvests Energy From Water Vapo...

 

Researchers at MIT just developed a new bio-polymer film that is able to generate electricity from a readily available source: water vapor. The material changes its shape as it absorbs evaporated water. As the bio-polymer film repeatedly curls and unfurls it drives robotic limbs, which in turn generate enough electricity to power micro- and nanoelectronic devices.

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