Electromagnetic Energy Harvester with Embedded Ferrofluid in PCB Technology

Yi Chiu*, Hao-Chiao Hong

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


This paper reports an electromagnetic energy harvester fabricated with Rigid-Flex Printed Circuit Board (PCB) technology by a commercial PCB supplier. Rigid FR-4 boards were used for transduction coil routing and mechanical support; flexible polyimide (PI) films were used to design elastic springs and magnet mounting platforms. Ferrofluid (FF) was injected into the embedded cavities inside the rigid PCB to increase the effective permeability of the medium around the magnet and thus increase the induced electromotive force (emf). Experiments showed up to 70% increase of output emf and 190% increase of output power compared with harvesters without embedded ferrofluid.

Original languageEnglish
Article number012078
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - 26 Jul 2018
Event17th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2017 - Kanazawa, Japan
Duration: 14 Nov 201717 Nov 2017


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