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UT Arlington (Texas) researchers earlier this year designed a micro-windmill that may become an innovative solution to cell phone charging or other applications where large windmills are not preferred.
Smitha Rao and J.-C. Chiao designed and built the device that is about 1.8 mm at its widest point. A single grain of rice could hold about 10 of these tiny windmills. Hundreds of the windmills could be embedded in a sleeve for a cell phone. Wind, created by waving the cell phone in air or holding it up to an open window on a windy day, would generate the electricity that could be collected by the cell phone's battery.
The micro windmills were tested successfully in September 2013 in Chiao's lab. The windmills operate under strong artificial winds without any fracture in the material because of the durable nickel alloy and smart aerodynamic design.
"The problem most designers have is that materials are too brittle," Rao said. "With the nickel alloy, we don't have that same issue. They're very, very durable."
(Score: 5, Insightful) by frojack on Saturday April 12 2014, @05:20PM
Ah, but invent anything, hang the words cell phone on it, and grab attention!
In anything short of a T9 tornado, there simply isn't enough energy in the wind hitting a cell phone sized target to make any headway in charging a battery. Plus they are so delicate that merely handling the phone would destroy them.
I can't imagine a single realworld use for these.
No, you are mistaken. I've always had this sig.