15-year-old Angelo Casimiro, from the Philippines, has recently made international news with a new invention that generates electricity in a very new and interesting way. The invention is a shoe insole that harnesses electricity every time that the person wearing the shoe takes a step. Angelo constructed his device using piezoelectric materials, which actually generate an alternating current voltage every time they are squeezed.
According to a blog post made by the teenager, “Piezoelectricity was present ever since mid-18th century. Piezoelectricity is the electric charge that accumulates in certain solid materials (such as crystals, certain ceramics in response to applied mechanical stress.”
