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This paper presents a method for the chemical synthesis and characterization of Fe3O4 magnetic nanoparticles (MNPs). In the work, MNPs were fabricated by chemical co-precipitation. The stoichiometric ratio of Fe2+/Fe3+ was 2∶3, and polyethylene glycol 2000 (PEG-2000) was chosen as the dispersant. Isolated single MNPs were obtained from the diluted solution of MNPs dried on a clean silicon wafer surface...
In this paper, an electromechanical energy harvester with resonant frequency of 55.5Hz and ability of scavenging the AC current energy by magnetic field coupling is designed and characterized. The energy harvester consists of a piezoelectric cantilever and a permanent magnet bias. An iron mass is mounted on the free end of the cantilever with the permanent magnet set proximity to it. This structure...
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