Abstract:
Provided is a power generation device that restrains interference between a plurality of flows of alternating current power if the flows of alternating current power are generated in the power generation device. The power generation device includes a housing, a first power generator held in the housing so as to be allowed to vibrate, and a second power generator held in the housing so as to be allowed to vibrate. The second power generator is electrically isolated from the first power generator.
Abstract:
A piezoelectric device includes a substrate, a lower electrode disposed above the substrate, a lower bonding layer disposed on the lower electrode, a piezoelectric layer containing a piezoelectric material disposed on an upper surface of the lower bonding layer, and an upper electrode disposed above the piezoelectric layer. The lower bonding layer includes an electrode material portion containing an electrode material of the lower electrode and a piezoelectric material portion containing a piezoelectric material. The electrode material portion and the piezoelectric material portion interdigitate with each other in the lower bonding layer.