Energy harvester using contact-electrification of magnetic fluid droplets under oscillating magnetic field

15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Kim, D.^1 ; Yun, K.-S.^1

Department of Electronic Engineering, Sogang University, Seoul, Korea, Republic of^1

关键词: Conducting electrodes;    Contact Electrification;    Electric power;    Energy Harvester;    Hydrophobic layers;    Mechanical structures;    Oscillating magnetic fields;    Solid interfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/660/1/012108/pdf
DOI  :  10.1088/1742-6596/660/1/012108

来源: IOP

【 摘 要 】

This paper reports a fluidic-based energy harvester generating electric power through contact-electrification of ferrofluid droplets, which will allow the power generation using oscillating magnetic field without vibration of any mechanical structure such as membrane or cantilever. The proposed device consists of top and bottom plates with a conducting electrode coated with a hydrophobic layer and water-based ferrofluid droplet. The contact area between the ferrofluid and the solid surface is changed according to the magnetic field applied by a magnet, which generates AC output power by contact electrification at the ferrofluid-solid interface.