发明授权
US07902730B2 Piezoelectric thin film device 有权
压电薄膜器件

Piezoelectric thin film device
摘要:
A sensor or actuator includes a piezoelectric thin film device including a lower electrode, a piezoelectric thin film and an upper electrode, and a voltage detecting device connected between the lower and upper electrodes of the piezoelectric thin film device. The piezoelectric thin film is formed of an alkali niobium oxide-based perovskite material expressed by (K1-xNax)NbO3 (0
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