An analytical model of a phononic crystal with a piezoelectric defect for energy harvesting using an electroelastically coupled transfer matrix

Phononic crystal (PnC)-based piezoelectric energy harvesting (PEH) has been recently introduced to amplify the input energy fed into PEH devices. If a defect is imposed into a PnC, as a result, defect bands are created within the band gap. At a defect band frequency, elastic waves can be localized inside the defect. By attaching a PEH device to the defect, output electric power can be significantly enhanced. However, since the attachment of the...