Piezoelectric/electrostrictive actuator

摘要

A piezoelectric/electrostrictive actuator comprising a substrate (2), a plurality of electrodes (4) in the form of strips formed on at least one surface of the substrate such that the electrode strips are spaced from each other in a direction parallel to the substrate surface, and a piezoelectric/electrostrictive portion (6, 6a) which is disposed between the adjacent strips of the electrodes in the spacing direction, and in contact with the adjacent electrode strips. The piezoelectric/electrostrictive portion produces a flexural displacement or force due to at least the longitudinal mode of converse piezoelectric or electrostrictive effect upon application of a voltage between the adjacent electrode strips.