Experiments on a wireless power transfer system for wearable device with sol-gel thin-film PZT

Binh Duc Truong, Dixiong Wang, Tiancheng Xue, Susan Trolier-Mckinstry, Shad Roundy

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations


This paper presents experiments on a low-frequency wireless power transfer system (WPTS) using a piezoelectric transducer with a magnet tip mass as a receiver. The thin-film piezoelectric bimorph cantilever is fabricated by sol-gel processing with the aim to miniaturize the system for wearable applications. The device couples an applied electromagnetic field to the mechanical transverse vibration of the beam, which then induces a voltage across a load resistance connected to the electrical ports. This coupled mechanism is therefore referred to as the magneto-mechano-electric (MME) effect. A power of 3.4 μW is generated in a resistance of 200 kΩ at a magnetic flux density of 100.3 μT. The potential of utilizing the same piezoelectric resonator for both energy harvesting and wireless power transmission modes is shown.

Original languageEnglish (US)
Article number012063
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - Dec 4 2019
Event18th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2018 - Daytona Beach, United States
Duration: Dec 4 2018Dec 7 2018

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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