From eco-dancefloors to ocean waves: Wherever there is movement, there is energy.
From energy-generating nightclubs to a T-shirt that charges your phone, there are many intriguing concepts for harnessing everyday movement, and even sound, to generate electricity. Until now, most of those concepts have used piezoelectric technology, meaning that as mechanical stress is placed on certain materials, they generate a small electronic charge. The key word here, however, is small. While