A piezoelectric band (10) includes: a base sheet (11) that has flexibility and is formed into a sheet shape; a piezoelectric sheet (20) that has flexibility and is formed into a sheet shape and placed over one side of the base sheet (11); and a cover sheet (12) that has flexibility and is formed into a sheet shape and placed over and in contact with one side of the piezoelectric sheet (20) that faces away from the base sheet (11). Upon reception of a drive signal, the piezoelectric sheet (20) vibrates at or above a frequency of 15 kHz. The cover sheet (12) has a plurality of holes (12a) passing therethrough from one side facing the piezoelectric sheet (20) to the other side, and the plurality of holes (12a) forms respectively air layers through which vibration of the piezoelectric sheet (20) propagates toward the other side.

A piezoelectric element, a piezoelectric vibrator and a manufacturing method and a driving method thereof, and an electronic device, and relates to field of piezoelectric technologies. According to the application, a piezoelectric structure is disposed on a first electrode and has an opening allowing the first electrode to penetrate through to be partially exposed, and a heat conducting structure is disposed in the opening. The opening penetrating through the piezoelectric structure is formed in the piezoelectric structure, such that the heating area is decreased when the piezoelectric structure vibrates, and heat generated by the piezoelectric structure is reduced, correspondingly; and the heat conducting structure is additionally disposed in the piezoelectric element to dissipate heat generated when the piezoelectric structure vibrates.

A piezoelectric vibration module has a first soft circuit board and a plurality of piezoelectric units. The first soft circuit board includes a plurality of cutting areas. Two adjacent cutting areas are spaced with a cut through groove. Each piezoelectric unit is respectively configured below each cutting area.

The force of a piezoelectric element is efficiently transferred to an optical fiber without attenuation, so that the vibration of the optical fiber becomes large. Provided is an optical fiber scanner including an optical fiber which has an elongated cylindrical shape in which illumination light emitted from a light source is guided and can emerge from a distal end thereof and whose distal end can be vibrated in a direction intersecting the longitudinal direction thereof; and at least one piezoelectric element which have a plate shape polarized in a thickness direction thereof and which are separately bonded to an outer circumferential surface of the optical fiber closer to a base side than to a distal end thereof.

A piezoelectric device includes a piezoelectric vibrating piece, a base, a wire, a conductive adhesive, and a buffer layer. The piezoelectric vibrating piece includes excitation electrodes and extraction electrodes at both principal surfaces. The base includes the piezoelectric vibrating piece and a first wiring electrode and a second wiring electrode connected to the extraction electrodes. The wire connects the extraction electrode on a surface opposite to a side of the base among the extraction electrodes to one wiring electrode of the first wiring electrode and the second wiring electrode. The conductive adhesive connects the extraction electrode at the base side among the extraction electrodes to the other wiring electrode among the first wiring electrode and the second wiring electrode. The buffer layer reduces stress of the wire between the extraction electrode to which the wire is connected and the piezoelectric vibrating piece.

Apparatus for transmitting motion to a moveable body comprising: a first bar having ends; two articulated arms, each comprising first and second arms connected at a joint having an axis about which the first and second arms rotate, wherein the first arms are of equal length, the second arms are of equal length and the second arm of each articulated arm is connected to a different end of the bar at a joint having an axis about which second arm and bar rotate; a mount connected to the first arm of each articulated arm at a joint having an axis about which first arm rotates; a second bar coupled to each articulated arm at a joint having an axis about which the second bar rotates; and a piezoelectric motor coupled to the first bar controllable to apply a force selectively in either direction along the bar's length; wherein, the joints are configured so that all the axes are substantially parallel and the first arms are parallel and the second arms are parallel for all rotations about the axes.

A microactuator for a dual stage actuated suspension for a hard disk drive is constructed as a longitudinal stack of piezoelectric (PZT) elements acting in the d33 mode, expanding or contracting longitudinally when an electric field is applied across them in the longitudinal direction. The microactuator has interlaced electrode fingers that separate and define the individual PZT elements, and apply the electric field. A stiff constraint layer having a high Young's modulus is affixed to the microactuator on the side opposite the suspension to which the microactuator is bonded. The constraint layer may be a layer of substantially inactive PZT material that is formed integrally with the PZT elements but without electrodes in the inactive PZT layer. The presence of the stiff constraint layer increases the effective stroke length of the microactuator.

A piezoelectric driving device includes a vibrating portion including a piezoelectric element for driving and a piezoelectric element for detection and vibrating by driving of the piezoelectric element for driving, a drive circuit that generates a drive signal for driving the piezoelectric element for driving, and a detection circuit that detects vibration of the vibrating portion based on a detection signal output from the piezoelectric element for detection with the vibration of the vibrating portion, wherein the piezoelectric element for detection is placed in an area containing a center of the vibrating portion.

A piezoelectric actuator comprises a substantially rectangular parallelepiped piezoelectric element. One outer surface of the piezoelectric element includes a first region, and a second region located such as to project from the first region and to overlap a region corresponding to an active portion in the one outer surface. The second region has a flat surface configured to come into contact with a body to be driven and to generate a frictional force therewith. The flat surface is shorter in a longitudinal direction of the piezoelectric element than in a lateral direction thereof. The flat surface is longer in the longitudinal direction of the piezoelectric element at a lateral center region thereof than at a lateral end region thereof.

Separation of particles or droplets from a host fluid may be achieved using a transducer and/or reflector that is a thin, non-planar structure. The thin non-planar structure improves operation of an acoustic standing wave generated by an acoustic transducer. The structure may operate as a pressure release boundary and may be constructed as plastic film.