Note: Enhanced energy harvesting from low-frequency magnetic fields utilizing magneto-mechano-electric composite tuning-fork

Aichao Yang; Ping Li; Yumei Wen; Chao Yang; Decai Wang; Feng Zhang; Jiajia Zhang

doi:10.1063/1.4922854

Note: Enhanced energy harvesting from low-frequency magnetic fields utilizing magneto-mechano-electric composite tuning-fork

Rev Sci Instrum. 2015 Jun;86(6):066102. doi: 10.1063/1.4922854.

Authors

Aichao Yang¹, Ping Li¹, Yumei Wen¹, Chao Yang¹, Decai Wang¹, Feng Zhang¹, Jiajia Zhang¹

Affiliation

¹ Research Center of Sensors and Instruments, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China.

PMID: 26133877
DOI: 10.1063/1.4922854

Abstract

A magnetic-field energy harvester using a low-frequency magneto-mechano-electric (MME) composite tuning-fork is proposed. This MME composite tuning-fork consists of a copper tuning fork with piezoelectric Pb(Zr(1-x)Ti(x))O3 (PZT) plates bonded near its fixed end and with NdFeB magnets attached at its free ends. Due to the resonance coupling between fork prongs, the MME composite tuning-fork owns strong vibration and high Q value. Experimental results show that the proposed magnetic-field energy harvester using the MME composite tuning-fork exhibits approximately 4 times larger maximum output voltage and 7.2 times higher maximum power than the conventional magnetic-field energy harvester using the MME composite cantilever.