Abstract: Exemplary piezoelectric vibrating pieces have an excitation electrode and an extraction electrode having uniform thickness in the vibrating region to prevent unnecessary vibrations and degradation of vibration characteristics. An exemplary piezoelectric vibrating piece includes a vibrating portion having an excitation electrode of a first thickness (d1), an outer frame surrounding the vibrating portion with a gap therebetween, a joining portion connecting the vibrating portion and the outer frame, and an extraction electrode connected to the excitation electrode and extending on the vibrating portion, joining portion, and outer frame. The extraction electrode has the first thickness d1 throughout the vibrating portion and a second thickness (d2>d1) on the outer frame.

Abstract: The present invention is a piezoelectric crystal oscillator using parametric amplification to enhance the Q. Parametric amplification is accomplished by driving the same region of the crystal as used for the oscillator with an overtone of the crystal resonator.

Abstract: A Langevin transducer horn uses split electroding or selective electroding of transducer elements and phase relationships of the voltages applied thereto to determine the relative longitudinal and flexural/transverse motion induced in the tip of the horn.

Abstract: A piezoactuator of multilayer design includes piezoelectric layers and electrode layers to form a stack. A predetermined breaking layer for the targeted origination and guiding of cracks is introduced between two adjacent electrode layers. The predetermined breaking layer has a barrier region, in which the formation of continuous electrically conductive paths or the formation of cracks leading through the barrier region is impeded.

Abstract: A piezoelectric resonator device comprises five layers. A first layer and a fifth layer include one or more metal electrodes. A second layer and a fourth layer comprise a piezoelectric material. A third layer comprises a metal layer. In a first area of the first layer the first layer metal electrodes include a first layer periodic structure along one dimension comprising one of the one or more first layer metal electrodes and a space with no first layer metal electrodes. In a second area of the fifth layer the fifth layer metal electrodes include a fifth layer periodic structure along the one dimension comprising one of the one or more fifth layer metal electrodes and a space with no fifth layer metal electrodes.

Abstract: A transducer system includes a multi-layer flexible circuit. The flexible circuit includes a first layer, a second layer and a third layer. The circuit engages a piezoelectric material/electrode subassembly. Vias are used to operatively connect ground electrodes of individual transducer elements to grounds in the third layer of the circuit. The vias extend through the first and second layers to the third layer of the circuit. When the flexible circuit is diced during the assembly of the transducer system, no cuts are made in the third layer of the circuit. As a result, a common ground connection is maintained by way of the grounds in the third layer of the circuit. Thus, no subsequent operation of reconnecting the common ground electrode is required.

Abstract: A piezoelectric element 1 as an electromechanical conversion element 1 and a drive device S according to the present invention include step portions 21 which are formed on each of a pair of external electrodes 11, 11 formed on outer peripheral surfaces of a laminated body 10 including a plurality of piezoelectric layers 10a and have a difference in height between the boundary of a connection region 11a for connection to a power supply member for supplying power and end sections 10c of the laminated body 10.

Abstract: A fluid conveyance device includes a substrate, and a disk-shaped piezoelectric element arranged in a bendable manner on the substrate. A plurality of substantially circular concentric segment electrodes are provided on the piezoelectric element, and are provided with voltages with phases that are shifted. A wavy ring deformation is thus produced on the piezoelectric element. A pocket produced between the piezoelectric element and the substrate is moved in a radial direction so as to convey a fluid from an outer substantially circular portion to a central portion and to discharge the fluid from the central portion.

Abstract: In a multilayer piezoelectric element comprising a plurality of piezoelectric layers and a plurality of metal layers which are alternately stacked one upon another, the metal layers includes a plurality of high resistance metal layers having a higher electrical resistance than adjacent metal layers on the both sides. The high resistance metal layers are regularly arranged so as to interpose a plurality of different metal layers other than the high resistance metal layers. In another multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are alternately stacked one upon another, at least one layer of the metal layers is formed by a plurality of partial metal layers disposed between the piezoelectric layers.

Abstract: Electrical energy generation apparatuses, in which a solar battery device and a piezoelectric device are combined in a single body by using a plurality of nano wires formed of a semiconductor material having piezoelectric properties.

Abstract: A stacked bulk acoustic resonator includes a first piezoelectric layer stacked on a first electrode, a second electrode stacked on the first piezoelectric layer; a second piezoelectric layer stacked on the second electrode, and a third electrode stacked on the second piezoelectric layer. The stacked bulk acoustic resonator includes further includes an inner raised region formed in an inner portion on a surface of at least one of the first, second and third electrodes, and an outer raised region formed along an outer perimeter on the surface of the at least one of the first, second or third electrodes. The outer raised region surrounds the inner raised region and defines a gap between the inner raised region and the outer raised region.

Abstract: A haemolysator having a sonotrode plate and oscillation generating elements acting thereupon, wherein the oscillation generating elements are set into mechanical oscillations by an electrical AC-signal generator. The haemolysater also includes a sample chamber to which the sonotrode plate transmits mechanical oscillations, and has oscillation generating elements that are excitable toward mechanical oscillations in a wide frequency band.

Abstract: The invention relates to an actuator body, comprising a plurality of piezoceramic layers, which are separated from each other by means of a positive or negative internal electrode in alternation, positive and negative collecting electrodes, which are arranged on two outer faces of the actuator body and are conductively connected to the associated positive or negative internal electrodes, wherein the actuator body of the multilayer actuator has at least one positive and one negative contacting electrode, by means of which the multilayer actuator is electrically contacted and which is conductively connected to the associated positive or negative collecting electrode, and the contacting electrodes are arranged in areas of the actuator body that are provided with a base metallization.

Abstract: A piezoelectric multilayer component includes a stack of piezoceramic layers, which are arranged one on top of the other, and electrode layers. The stack has a first area and a second area. The second area contains a disturbance material, which is used to make the second area less mechanically robust than the first area.

Abstract: This disclosure provides systems, apparatus, and devices and methods of fabrication for electromechanical devices. In one implementation, an apparatus includes a metal proof mass and a piezoelectric component as part of a MEMS device. Such apparatus can be particularly useful for MEMS gyroscope devices. For instance, the metal proof mass, which may have a density several times larger than that of silicon, is capable of reducing the quadrature and bias error in a MEMS gyroscope device, and capable of increasing the sensitivity of the MEMS gyroscope device.

Abstract: A multi-layer piezoelectric element includes a columnar stacked body including an active portion including piezoelectric layers and internal electrode layers alternately laminated, and inactive portions including piezoelectric layers laminated, the inactive portions arranged at both ends in a stacked direction of the active portion; and a pair of external electrodes arranged on side faces of the columnar stacked body, the pair of external electrodes electrically connected to the internal electrode layers alternately. In at least one interlayer portion of the inactive portions, there are metal particles having a particle size smaller than that of piezoelectric ceramic particles forming the piezoelectric layers of the inactive portions, and the metal particles are scattered in a range including a region in which the internal electrode layers overlap each other when viewed in the stacked direction of the columnar stacked body.

Abstract: A piezoelectric vibrating piece and a piezoelectric device are provided, in which the deterioration of the vibrating characteristics of a vibrating portion is prevented. The piezoelectric vibrating piece comprises a rectangular-shaped first surface having a long side and a short side; a second surface opposing the first surface; and side surfaces, connecting the first surface and the second surface. The piezoelectric vibrating piece further comprises a first excitation electrode formed on a central part of the first surface; a first extraction electrode extracted from the first excitation electrode to an outer peripheral portion of the second surface via only the side surface at the short side; a second excitation electrode formed on the second surface opposite to the first excitation electrode; and a second extraction electrode extracted from the second excitation electrode to the outer peripheral portion of the second surface.

Abstract: Provided is a piezoelectric element including: an electrode portion including a piezoelectric layer and an electrode layer that are laminated; and a non-electrode portion that is in contact with the electrode portion and includes a piezoelectric layer without an electrode layer, in which the non-electrode portion includes a region having a density smaller than a density of the piezoelectric layer of the electrode portion.

Abstract: A piezoelectric component with a monolithic stack, has electrode layers and piezoceramic layers arranged alternately one on top of the other, the piezoceramic layers have a piezoceramic, and having at least one porous security layer arranged in the stack for the formation of a crack if mechanical overload of the stack should occur. The piezoelectric component has an infiltration barrier arranged between the security layer and a lateral surface section of the stack for suppressing the penetration of a foreign substance into the security layer. The piezoelectric component can be as a piezoactuator for controlling a valve, particularly a valve of an internal combustion engine.

Abstract: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g., an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.

Abstract: A piezoelectric actuator includes a vibrating plate having a base surface, a first electrode, a piezoelectric layer, and a second electrode which extends in a first direction. In the piezoelectric actuator, the second electrode has a first portion having a first width, a second portion having a second width which is smaller than the first width, and a third portion which connects the first portion and the second portion, the first electrode has a first side which forms an outer circumference of the first electrode on a plan view, and the third portion of the second electrode is arranged at an upper side of the first side of the first electrode and a third width of the third portion is made narrower from the first portion toward the second portion.

Abstract: A piezoelectric oscillator part capable of suppressing oscillation that leaks from a piezoelectric oscillator to a substrate side is obtained. The piezoelectric oscillator part has a piezoelectric oscillator held on a substrate by first and second conductive holding members. The first conductive holding member is arranged proximal to a first end of the substrate. A terminal electrode connected to the first conductive holding member is arranged proximal to a second end of the substrate opposite the first end. The first conductive holding member and the terminal electrode are electrically connected by a wiring electrode.

Abstract: Disclosed herein is an ultrasound probe including a plurality of piezoelectric elements forming a laminate, a plurality of internal electrodes formed at the lamination interface, an external electrode formed on the front or the rear surface of the laminate. The ultrasound probe includes a plurality of piezoelectric elements forming a laminate, a plurality of internal electrodes interposed among the piezoelectric elements, and an external electrode formed on the front or rear surface of the laminate, wherein the external electrode includes a first external electrode and a second external electrode disposed to have a space therebetween.

Abstract: A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent to the piezoelectric element. The HTC material can be thermally coupled to one or more heat sinks. Use of HTC material in conjunction with these piezoelectric element surfaces is managed to avoid degradation of propagating acoustic energy. Use of the HTC material in conjunction with heat sinks allows for creation of thermal paths away from the piezoelectric element. Active cooling of the heat sinks with water or air can further draw heat from the piezoelectric element. Further implementations form a composite matrix of thermally conductive material or interleave thermally conductive layers with piezoelectric material.

Abstract: To provide an elastic wave device that is small sized and in which a frequency fluctuation due to a change with time hardly occurs, and an electronic component using the above elastic wave device. A trapping energy mode portion 2 provided in an elastic wave waveguide 10 made of an elastic body material excites a second elastic wave being an elastic wave in an energy trapping mode by a specific frequency component included in a first elastic wave being an elastic wave in a first or higher-order propagation mode propagated from a first propagation mode portion 4, and a cutoff portion 3 provided in a peripheral region of the trapping energy mode portion 2 has a cutoff frequency being a frequency higher than that of the second elastic wave. A second propagation mode portion mode-converts the second elastic wave leaked through the cutoff portion to a third elastic wave being the elastic wave in the propagation mode to propagate the third elastic wave.

Abstract: A vibrating element of an ultrasonic motor includes a vibrating member, and a piezoelectric body to produce a traveling wave thus to vibrate the vibrating member when electric power is applied to the piezoelectric body. The piezoelectric body includes a first piezoelectric layer attached to the vibrating member and in which positive poles and negative poles are alternately polarized, a second piezoelectric layer attached to the first piezoelectric layer and in which positive poles and negative poles are alternately polarized, a plurality of electrodes formed on opposite surfaces of the first and second piezoelectric layers, and an electrode connecting part formed on outer circumferential surfaces of the first and second piezoelectric layers to selectively connect the plurality of electrodes to one other.

Abstract: A vibrator element includes: a base portion; and three vibrating arms that extend from the base portion in the Y axis direction. The vibrating arms are arranged in the X axis direction, include excitation electrodes on a principal face, and vibrate in the Z axis direction . When an arm width of the vibrating arm, which is located at the center of the arrangement, in the X axis direction is W1, each arm width of the other vibrating arms in the X axis direction is W, an electrode width of the excitation electrode of the vibrating arm, which is located at the center of the arrangement, in the X axis direction is Al, and each electrode width of the excitation electrodes of the other vibrating arms in the X axis direction is A, 1.35<W1/W<1.90 and 1.35<A1/A<1.90.

Abstract: A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated and a stress relaxing layer is disposed at part of portions between the piezoelectric layers, and an external electrode that is bonded to a side face of the stacked body so as to make electrical connection with the internal electrode layers, the internal electrode layers being not exposed on the side face of the stacked body, but the stress relaxing layer being exposed on the side face of the stacked body.

Abstract: An ultrasonic vibration apparatus includes a vibrator including at least two vibration elements, at least three electrode portions, a bridging portion and an anti-vibration portion. The vibration elements are configured to generate ultrasonic vibration. The vibration elements and the electrode portions are alternately arranged side by side in a vibrating direction. The electrode portions include at least two first electrode portions and at least one second electrode portion alternately arranged in the vibrating direction. The vibrator integrally vibrates ultrasonically in the vibrating direction when the driving voltage is applied to the first and second electrode portions. The bridging portion couples and electrically connects the first electrode portions with each other. The anti-vibration portion is configured to suppress vibration of the bridging portion in any other direction-except the vibration direction and configured to cover the entire vibrator including the bridging portion.

Abstract: A center of a multi-layer piezoelectric element is an active region and deforms to a greater degree than ends thereof which is an inactive region during driving operation, and is therefore more susceptible to stress concentration and crack development. To address this problem, a multi-layer piezoelectric element includes a columnar stacked body in which piezoelectric layers and internal electrode layers are alternately laminated, and a pair of external electrodes configured to bond to side faces of the columnar stacked body, wherein a side face of the columnar stacked body is configured so that a surface roughness of a center of the side face in a stacked direction of the columnar stacked body is greater than those of ends of the side face in the stacked direction of the columnar stacked body. This makes it possible to relax the stress exerted on the side face of the columnar stacked body, and thereby enhance the durability of the multi-layer piezoelectric element.

Abstract: A transducer array assembly includes a support structure having a plurality of predetermined openings therein for accommodating transducer components. Flexible circuits are embedded in the support structure. Each flexible circuit has first ends being positioned in the support structure predetermined openings. Terminal blocks are joined to the second ends. Transducer elements are positioned in the support structure predetermined openings and placed in electrical communication with the flexible circuit first ends. A polymer material is provided surrounding the transducer elements, said support structure, and said flexible circuit first ends. There is also provided a method for manufacturing the transducer array.

Abstract: There are provided an electrode structure of a piezoelectric resonator and a piezoelectric resonator including the same. The piezoelectric resonator includes: a piezoelectric plate vibrated by an electrical signal; and first and second electrodes having first to fourth layers stacked on both surfaces thereof, wherein the first and third layers are made of at least one selected from the group consisting of Ti, Ni, Cr, an alloy including Ti and an alloy including Cr and the second and fourth layers are made of Ag or an alloy including Ag.

Abstract: A stacked-type piezoelectric device includes a stack of piezoelectric layers, plural conductive layers, a first contact hole, a second contact hole, and plural insulating portions. The piezoelectric layers are disposed between the conductive layers. The first and second contact holes penetrate the piezoelectric layers and the conductive layers, and each of first and second contact holes is filled with a conductive material. Every insulating portion is formed at one conductive layer. Two adjacent insulating portions are respectively formed at the outer rims of the first and second contact holes, to electrically isolate the conductive layer (in which the insulating portion is formed) from the conductive material in the contact hole.

Abstract: To carry out frequency adjustment easily, accurately and efficiently without being influenced by a size of a piezoelectric vibrating piece and achieve low cost formation and promotion of maintenance performance, there is provided a method of fabricating a piezoelectric vibrating piece which is a method of fabricating a piezoelectric vibrating piece having a piezoelectric vibrating plate 11, a pair of exciting electrodes 12, 13, and a pair of mount electrodes 15, 16 by utilizing a wafer S, the method including an outer shape forming step of forming a frame portion S1 at a wafer and forming a plurality of piezoelectric plates at the frame portion to be connected thereto by way of a connecting portion 11a, an electrode forming step of forming pairs of exciting electrodes and pairs of mount electrodes respectively at the plurality of piezoelectric plates and forming a common electrode S2 respectively electrically connected to a plurality of the pairs of mount electrodes 15 on one side by way of the connecting por

Abstract: A multi-layer piezoelectric element includes a stack having metal layers and piezoelectric layers stacked one on another, and a pair of external electrodes formed on the side faces of the stack. At least one of the metal layers is a stress relieving layer having partial metal layers scattered between the two piezoelectric layers and voids. Junction sections are formed between the two piezoelectric layers to join and are disposed on both sides of an imaginary straight line drawn to connect the center of width of one of the external electrodes and the center of width of the other of the external electrodes in a plane including the stress relieving perpendicular to the stacking direction.

Abstract: A three-dimensional woven active fiber composite is disclosed. The composite includes a plurality of actuating fibers configured in a three-dimensional arrangement. The composite further includes a plurality of conductive wire electrodes that are woven through the plurality of actuating fibers. The electrodes may be configured into two dimensional electrode mats that are spaced apart along the length of the composite. Filler fibers may be used between adjacent electrode mats to help reinforce the composite. A sleeve member can also be used to help provide compressive containment for the actuating fibers and conductive wire electrodes.

Abstract: A vibrator element includes: a base part; and a vibrating arm extended from the base part in a first direction, the vibrating arm including a first region, a second region, and a third region sequentially arranged from the base part side in the first direction, the first region to the third region including first electrodes and second electrodes that generate electric fields in second directions perpendicular to the first direction in a plan view and are electrically independent from each other, wherein electric field directions of the first region and the third region and an electric field direction of the second region are opposite to each other, and the vibrating arm is expanded and contracted in the first direction by the electric fields in the second directions, and the vibrating arm is vibrated in third directions as directions perpendicular to the respective first direction and second directions.

Abstract: Bulk acoustic wave (BAW) gyroscopes purposefully operate using non-degenerate modes, i.e., resonant frequencies of drive and sense modes are controlled so they are not identical. The resonant frequencies differ by a small controlled amount (?f). The difference (?f) is selected such that the loss of sensitivity, as a result of using non-degenerate modes, is modest. Non-degenerate operation can yield better bandwidth and improves signal-to-noise ratio (SNR) over comparable degenerate mode operation. Increasing Q of a BAW resonator facilitates trading bandwidth for increased SNR, thereby providing a combination of bandwidth and SNR that is better than that achievable from degenerate mode devices. In addition, a split electrode configuration facilitates minimizing quadrature errors in BAW resonators.

Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.

Abstract: Piezoelectric vibrating devices have piezoelectric vibrating pieces of which the vibration frequency is measurable individually on a wafer scale, without being affected by adjacent piezoelectric devices on the wafer. An exemplary piezoelectric device includes a piezoelectric vibrating piece having excitation electrodes and respective extraction electrodes. The device includes a package base with two connecting electrodes facing the vibrating piece and connected to respective extraction electrodes. Two pairs of mounting terminals are situated on the outer surface of the package base. Also on the outer surface of the package base are two pairs of opposing castellations that are recessed toward the center of the package base. Edge-surface electrodes connect the first and second main surfaces of the base; one pair is connected to the connecting electrodes and the other pair is connected to respective mounting terminals.

Abstract: A laminated piezoelectric element having a laminated structure in which a plurality of piezoelectric layers and a plurality of internal electrodes are alternately laminated is provided. This laminated structure has an opposing section wherein an internal electrode on an anode side and an internal electrode on a cathode side which are adjacent to each other in the laminating direction, oppose in the laminating direction, and an end-side non-opposing section situated in a position closer to end in the laminating direction than the opposing section. This end-side non-opposing section has a porous section having porosity larger than that of the internal electrodes.

Abstract: A piezoelectric motor includes a piezoresonator body (3) having opposing front and back surfaces and opposing first and second end surfaces. The front (17) and the back (18) surfaces are substantially parallel to first (15) and second (16) longitudinal axes of the piezoresonator body. The end surfaces (2) are substantially perpendicular to the first longitudinal axis and substantially parallel to the second longitudinal axis and are separated by a length (L) of the piezoresonator body. The motor also includes at least one common electrode (6) disposed on the back surface and at least 6n excitation electrodes (7-12) disposed across the front surface in two symmetric rows extending along L, where n is an integer ?1. In the motor, the piezoelectric body has an nth order longitudinal vibration frequency (?1) along L and a 3nth order bending vibration frequency (?2) along L, and where ?1 and ?2 are substantially equal.

Abstract: The present invention provides an electronic device with improved characteristics and a method of making the electronic device. In a method of making an electronic device (piezoelectric device) 74 according to the present invention, an outer edge R1 of a piezoelectric film 52A formed on an electrode film 46A of a laminate 60 is located inside an outer edge R2 of the electrode film 46A. For this reason, in removal of a monocrystalline Si substrate 14 from a multilayer board 61, where an etching solution permeates between polyimide 72 and laminate 60, the etching solution circumvents the electrode film 46A before it reaches the piezoelectric film 52A. Namely, a route A of the etching solution to the piezoelectric film 52A is significantly extended by the electrode film 46A. In the method of making the electronic device 74, therefore, the etching solution is less likely to reach the piezoelectric film 52A.

Abstract: To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and a common electrode is provided on an opposite surface side so as to face the first and second electrodes. A piezoelectric sensor includes: a first electrode for measurement and a second electrode for reference provided apart from each other on one surface side of a piezoelectric piece; a common electrode provided on an opposite surface side of the piezoelectric piece commonly for the first electrode and the second electrode to face the first electrode and the second electrode; and an adsorption layer formed on an area, of the common electrode, to which the first electrode is faced across the piezoelectric piece, to adsorb a substance to be sensed.

Abstract: A piezoelectric transformer with a body that includes a first functional part and a second functional part is disclosed. The second functional part has inner electrodes, located in the body, which are connected to outer electrodes of this part. The first outer electrode of the first functional part is arranged parallel to the inner electrodes of the second functional part, wherein the minimum distance between the first outer electrode of the first functional part and the respective outer electrodes of the second functional part is selected greater than the distance between the first outer electrode of the first functional part and a terminal inner electrode of the second functional part facing it.

Abstract: In a multilayered piezoelectric element, a side insulating film is accurately formed even on a thin multilayered structure. The element includes: a multilayered structure having a step formed on a side surface of the multilayered structure such that an end of an internal electrode is located on a projecting portion of either side surface; a side insulating film for covering the end of the internal electrode on the projecting portion of the side surface; a first flat electrode formed on one principal surface of the multilayered structure; a second flat electrode formed on the other principal surface of the multilayered structure; a first side electrode formed on a first side surface of the multilayered structure and connected to a first group of electrodes; and a second side electrode formed on a second side surface of the multilayered structure and connected to a second group of electrodes.

Abstract: A lighting device implemented through utilizing an insulating type piezoelectric transformer in driving light-emitting-diodes (LEDs), comprising at least said insulating type piezoelectric transformer connected to an LED module, a primary side of said insulating type piezoelectric transformer is used to receive a pulse voltage, and that is converted into an AC voltage in a piezoelectric voltage transformation way, and said AC voltage is output from a secondary side of said insulating type piezoelectric transformer to said LED module in proceeding with lighting function. Due to its various advantages of small leakage current, good insulation capability, high voltage endurance, low operation temperature, compact size, thin profile, high energy conversion efficiency, said insulating type piezoelectric transformer can be used to not only raise lighting efficiency, but also reduce overall size of said lighting device.

Abstract: A vibration reduction system has a vibration reduction film and a control unit. The vibration reduction film is constituted of a vibration sensor film, an insulating layer, and a vibration actuator film that are stacked in this order. In each of the vibration sensor film and the vibration actuator film, two pairs of electrodes are formed on both surfaces of a piezoelectric polymer film into a pattern based on a particular mode of vibration. The electrodes of the vibration sensor film overlap with the electrodes of the vibration actuator film. In response to electric charge signals from the electrodes of the vibration sensor film, the particular mode of vibration is detected. By application of voltages into the electrodes of the vibration actuator film, a vibration of opposite phase is generated to counteract the detected vibration.

Abstract: A touchscreen panel input device is manufactured by forming a first adhesion layer and a second adhesion layer on a growth substrate, removing only the second adhesion layer from a selected region by irradiating laser, forming a growth base layer on the selected region where the second adhesion layer is removed and on the second adhesion layer and an oxide thin film having piezoelectricity on the growth base layer, transferring the oxide thin film layer on the selected region to a second substrate having first transparent electrodes by peeling-off, and adhering the second substrate to a third substrate having second transparent electrodes by placing the transferred oxide thin film layer between them. The touchscreen panel input device detects a pushing pressure in addition to a touch position with proving a tactile feedback.

Abstract: An actuator device is disclosed. The actuator device comprises a stack of piezoelectric-ferroelectric active layers separated by surface electrodes. At least a few of the surface electrodes are independently addressable such that at least two active layers are biasable by different voltages. In an embodiment of the invention, at least a few of the voltages induce a nonlinear ferroelectric effect.