Fitness trackers, smartwatches, clever earpieces and other incredible wearables are the first wave in a new era in electronics. Most are hamstrung by limited battery power, so the next wave – an army of tiny sensors that autonomously transfer data to other devices, better known as the Internet of Things (IoT) – will rely on a revolution in battery technology. Cue 3D microbatteries. Read more at TechRadar