Energy Harvesting: Design of Mechanical Frequency Regulator for Predictable Uniform Power from Triboelectric Nanogenerators (Adv. Energy Mater. 15/2018)

The cover art representing article 1702667 by Songkuk Kim, Dukhyun Choi and co-workers, illustrates the energy conversion process from an irregular input force and frequency into regulated output force and frequency. The spiral coil inserted inside the prism shape enables this energy conversion. In the same light, this research introduces a system to regulate the electrical output from environmental mechanical energy scavengers.