Disclosed is an electronic device. The electronic device includes a housing provided with an opening, a functional device movably mounted on the housing, and a driving mechanism and a transmission mechanism mounted in the housing. The driving mechanism includes a piezoelectric device that vibrates when being energized. The transmission mechanism includes a cam disposed at an inner side of the functional device and including a wheel body mounted on the piezoelectric device and a protruding portion disposed at a wheel rim of the wheel body. The piezoelectric device drives the cam to rotate between a first location and a second location. When the cam is at the first location, the functional device is located in the housing. When the cam is at the second location, the protruding portion drives at least part of the functional device to extend out of the housing from the opening.

A composite substrate, a surface acoustic wave resonator and their fabricating method are provided. The fabricating method of the composite substrate includes: providing a first substrate; forming a liner layer including at least a polycrystalline material layer on the first substrate; depositing a piezoelectric sensing film for generating acoustic resonance on the polycrystalline material layer by a physical or chemical deposition method; and performing recrystallization annealing treatment on the piezoelectric sensing film, to make the piezoelectric sensing film reach a polycrystalline state. The recrystallization annealing treatment includes a heating process and a cooling process, and the heating process includes heating the piezoelectric sensing film to make the piezoelectric sensing film reach a molten state.

A portable electronic device comprising: an enclosure having an enclosure wall that forms an interior chamber and a sound output port to an ambient environment; a transducer positioned within the interior chamber and dividing the interior chamber into a front volume chamber coupling a first side of the transducer to the sound output port and a back volume chamber coupled to a second side of the transducer; and an electromechanical valve comprising a number of flaps operable to open and close a vent to the interior chamber, the front volume chamber or the back volume chamber.

A piezoelectric film laminated body includes a metal film, an amorphous film, and a scandium aluminum nitride film. The amorphous film has an insulation property and is disposed on the metal film. The scandium aluminum nitride film is disposed on the amorphous film and is in contact with a surface of the amorphous film.

Disclosed are an ultrasonic linear motor and a method of driving the same. The ultrasonic linear motor includes a vibrator including an elastic portion and a first piezoelectric element and a second piezoelectric element which are disposed on two surfaces of the elastic portion, a moving shaft coupled to the vibrator and moved according to a displacement of the vibrator, a mover inserted into and coupled to the moving shaft, and a controller which applies a first driving pulse and a second driving pulse to the first piezoelectric element and the second piezoelectric element, wherein a frequency of the first driving pulse and a frequency of the second driving pulse are set to a frequency between a resonant frequency at which an impedance is minimum and an anti-resonant frequency at which the impedance is maximum.

An energy harvester includes a frame having a base, a first side member affixed to the base, and a second side member affixed to the base and spaced apart from the first side member. A beam is coupled between the first side member of the frame and the second side member of the frame. The beam has a substrate layer with a first end affixed to the first side member of the frame, a second end affixed to the second side member of the frame, a first face, and a second face opposite to the first face. The substrate is elastically deformable in response to the vibratory force. The beam further includes a first piezoelectric layer joined to the first face of the substrate layer and having a terminal for electrical connection to a load, the first piezoelectric layer comprising at least one piezoelectric patch.

An arrangement for use in a matrix-vector-multiplier, comprising a stack of material layers arranged on a substrate, and a waveguide element formed in at least one material layer in the stack is disclosed. In one aspect, the arrangement further comprises a transducer arrangement which is coupled to the waveguide element. The transducer arrangement is configured to generate and detect spin wave(s) in the waveguide element, and wherein the waveguide element is configured to confine and to provide interference of the at spin wave(s) propagating therein. The arrangement further comprises a control mechanism comprising at least one control element coupled to the waveguide element, and a direct current electric source coupled to the at least one control element. The control mechanism, via the at least one control element, is configured to modify the phase velocity of the spin wave(s) propagating in the waveguide element.

A vibration structure that includes a film having a first electrode on a first main surface thereof, the first electrode defining a first connection region on the first main surface where the first electrode is not present, and the film is constructed to be deformed in a plane direction when a voltage is applied thereto; a frame-shaped member; a vibration portion surrounded by the frame-shaped member; a first connection member that connects the first main surface of the film to the frame-shaped member at the first connection region; a second connection member that connects the film to the vibration portion; and an extended electrode that is connected to the first electrode.

A method of manufacture and resulting structure for a single crystal electronic device with an enhanced strain interface region. The method of manufacture can include forming a nucleation layer overlying a substrate and forming a first and second single crystal layer overlying the nucleation layer. These first and second layers can be doped by introducing one or more impurity species to form the strained single crystal layers. The first and second strained layers can be aligned along the same crystallographic direction to form a strained single crystal bi-layer having an enhanced strain interface region. Using this enhanced single crystal bi-layer to form active or passive devices results in improved physical characteristics, such as enhanced photon velocity or improved density charges.

To provide a piezoelectric film that is less likely to be electrified and that can be safely handled. A multilayered film according to an embodiment of the present invention including: a piezoelectric film containing polyvinylidene fluoride; and a protective film including an antistatic layer, the piezoelectric film and the protective film being bonded.