According to researchers these micro windmills will recharge your cellphone in a few minutes.
Texas University’s researchers have built micro-windmill models to recharge small devices like smartphones. These models are no bigger than a pinhead and will offer an alternative power generation device. They say that the robotic technique behind these mills can revive an empty cellphone within a couple of minutes. The devices are made of flexible nickel which you can embed in mobile devices to capture wind. Holding your phone in the air or to an open window will make energy. It might be difficult being not sceptical about this micro-machines, but they could be a best bet to make this world greener and more sustainable.