Cottonwood to produce electricity

Researchers from Iowa State University discovered that biomimetic tree that mimics the branches and leaves of a cottonwood tree can generate electricity when its artificial leaves sway in the wind and allow off-grid energy harvesting. According a paper published in the journal PLOS ONE, the researchers explained that small strips of specialised plastic inside the leaf stalks release an electrical charge when bent y wind.

In 2008 the US Department of Energy set a target of 20% wind energy by 2030 and to date noisy induction-based turbine form the mainstay, as several groups have proposed that artificial plants containing piezoelectric elements may harvest wind energy sufficient to contribute to a carbon neutral energy economy.

Mobile phone towers in some urban locations, like Las Vegas, have been camouflaged as trees, complete with leaves that serve only to improve the tower’s aesthetic appeal. “Tapping energy from those leaves would increase their functionality” Michael McCloskey, Associate professor at Iowa University.

The prototype devices, features a metallic trellis, with a dozen plastic flaps in the shape of cottonwood leaves. “It’s definitely doable, but the trick is accomplishing it without compromising efficiency. More work is necessary, but there are paths available,” Curtis Mosher of Iowa State University.