Liquid metal droplet based tube-shaped electrostatic energy harvester

This paper presents a liquid metal droplet (LMD) based tube-shaped electrostatic energy harvester, which for the first time, utilize LMD as tribo-electrification material. This device use double-helix electrodes around the tube to obtain cycle transferred charges which multiple output frequency and enhance efficiency tremendously. As using the tube-shaped structure, this generator can be wound up to user's wrist, which is very convenience to harvest energy from human movement. The voltage output can be reached to 3.52 V when user swung arm irregularly. It gives great potential to power up the wearable electronics.