Energy Harvesting for Wearable Technology Steps Up

Wearable devices, like nearly every other piece of tech, need energy. Fortunately, though, at wearables’ modest power budgets, energy is effectively everywhere. It’s in the sun’s rays and radio waves, the skin’s sweat and body heat, a person’s motion and their footfalls. And today, technology is maturing to the point that meaningful amounts of these energy giveaways can be harvested to liberate wearables from ever needing a battery. Which seems plenty attractive to a range of companies and researchers.

“Energy is something we take for granted, because we just plug things into…