|| List of recent Piezoelectric-related patents
| Pezoelectric sound element|
A piezoelectric sound generating element capable of providing flatter and less fluctuated sound pressure frequency characteristics includes a diaphragm that is formed in a circular plate shape with a circular profile. A piezoelectric element is affixed to the side of a bottom wall portion of the diaphragm.
| Piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece|
A piezoelectric vibrator is provided in which a piezoelectric vibrating piece is accommodated in a package, the piezoelectric vibrating piece including: a pair of vibrating arm sections; a base section to which each base end of the pair of vibrating arm sections is connected; and a support arm section that is connected to the base section between the pair of vibrating arm sections and extends from the base section to the same side as the vibrating arm sections, in which the piezoelectric vibrating piece is supported within the package in mount sections provided in the support arm section, and in which the mount sections are provided in a region which is defined between a position of which a distance from an end section of the base section opposite to the side where the support arm section is connected to the side of a leading end of the support arm section is 25% of a width dimension of the base section along the width direction and a position of which the distance is 65% of the width dimension.. .
| Etalon and etalon device|
An etalon has a pair of transparent components; a ring-shaped piezoelectric member which is provided between the pair of transparent components, which is bonded to the pair of transparent components, and which is provided with metal films on the surfaces which face the transparent component sides; and the external connecting terminals which are provided on the transparent components and which are connected to the metal films.. .
| Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and ultrasonic sensor|
A liquid ejecting head which includes a piezoelectric element which includes a first electrode, a piezoelectric layer which is provided on the first electrode, and on which a plurality of piezoelectric films are laminated, a second electrode which is provided on the piezoelectric layer, and a plurality of active units which are interposed between the first electrode and the second electrode, and a pressure generating chamber which communicates with nozzle openings which eject liquid, and in which a pressure fluctuation is generated by the piezoelectric element, in which a plurality of grooves with inner faces facing the first electrode side are formed on a side surface of the piezoelectric layer on each interface of each of the piezoelectric films along a first direction and a second direction which cross a third direction which goes from the first electrode to the second electrode.. .
| Passivation of ring electrodes|
An inkjet device includes a pumping chamber bounded by a wall, a piezoelectric layer disposed above the pumping chamber, a ring electrode having an annular lower portion disposed on the piezoelectric layer. A moisture barrier layer covers a remainder of the piezoelectric layer over the pumping chamber that is not covered by the annular lower portion of the ring electrode..
| Liquid ejecting head and liquid ejecting apparatus|
A liquid ejecting head includes a flow channel forming substrate having pressure generation chambers communicating with a nozzle opening and arranged in parallel along a lateral direction. A piezoelectric element is provided on one surface of the flow channel forming substrate in correspondence to the pressure generation chamber, and has a first electrode, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer.
| New processing method for grain-oriented lead-free piezoelectric na0.5bi0.5tio3-batio3 ceramics exhibiting giant performance|
Textured ceramic compositions having improved piezoelectric characteristics as compared with their random counterparts are provided. Methods of making the compositions and devices using them are also included.
| Piezoelectric device and electronic apparatus|
A piezoelectric device includes an insulating substrate, a piezoelectric vibration device that is mounted on a device mounting pad, a metal lid member that seals the piezoelectric vibration device in an airtight manner, an external pad that is arranged outside the insulating substrate, an oscillation circuit, a temperature compensation circuit, and a temperature sensor. The lid member and the temperature sensor or the lid member and the ic component are connected to each other so as to be heat-transferable, and a heat transfer member having thermal conductivity higher than that of the material of the insulating substrate is additionally included..
| Piezoelectric rotary drive for a shaft|
A piezoelectric rotary drive for a shaft, is disclosed which can include a piezoelectric actuator and a coupling portion for driving the shaft as a stick-slip drive. To transmit greater contact forces between the frame and the shaft, at least one piezoelectric actuator and an adjustable and/or deformable frame with at least one coupling portion can be coupled to the shaft in a force-locked manner so as to accomplish a stick-slip drive, wherein the frame translates a piezoelectric deformation of the actuator mechanically such that the coupling portion rotates about the axis of the shaft over at least a part of the circumference of the shaft..
| Xeno transduction system|
An oscillation frequency power amplification circuit is disclosed herein having improved power and frequency receiver characteristics. The power circuit is characterized by having atmospheric capacitance of device electronic amplify resonate by antenna vessel.
| Piezoelectric driven oscillating surface|
Disclosed herein is an active roughness actuator and a method of forming an active roughness actuator. The active roughness actuator includes a surface having at least one aperture; a compliant layer disposed on the surface such that the compliant layer covers the at least one aperture; a chamber having a fluid therein and a piezoelectric surface mechanically coupled to the chamber.
|System and method for variable depth ultrasound treatment|
A non-invasive variable depth ultrasound treatment method and system comprises a variable depth transducer system configured for providing ultrasound treatment to a patient. An exemplary variable depth transducer system can comprise a transducer configured to provide treatment to more than one region of interest, such as between a deep treatment region of interest and a superficial region of interest, and/or a subcutaneous region of interest.
|Acoustic generator, acoustic generation device, and electronic device|
The problem is to reduce variations of sound pressure in the sound pressure frequency characteristics. To solve the problem, an acoustic generator includes a film that is a supporting plate; a frame member that is provided on the outer circumference of the film; a piezoelectric element that is provided on the film within a frame of the frame member; and a resin layer that is provided on the film within the frame of the frame member, and the resin layer including an air bubble.
|Liquid-ejecting head and liquid-ejecting apparatus|
A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening and includes a piezoelectric element including a piezoelectric layer and electrodes. The piezoelectric layer contains bismuth sodium potassium titanate and satisfies the inequality 0≦pr/pm≦0.25 at 25° c., where pm and pr are the saturation polarization and remanent polarization, respectively, of the piezoelectric layer..
|Inkjet head and method of manufacturing the inkjet head|
According to one embodiment, an inkjet head includes: a nozzle plate including plural nozzles; a piezoelectric element including plural pressure chambers corresponding to the nozzles and sidewalls provided adjacent to the pressure chambers and serving as driving elements configured to press the pressure chambers to eject liquid from the nozzles; a substrate to which the piezoelectric element is bonded; and a frame member placed on the substrate to surround the piezoelectric element. Grooves are formed on the upper end, and in which an adhesive is applied to bond the upper ends of the sidewalls and the nozzle plate..
|Acoustic resonator comprising acoustic reflector, frame and collar|
A solidly mounted resonator (smr) device includes an acoustic reflector having stacked acoustic reflector layer pairs, each of which includes a low acoustic impedance layer formed of low acoustic impedance material stacked on a high acoustic impedance layer formed of high acoustic impedance material. The smr device further includes a bottom electrode disposed on the acoustic reflector, a piezoelectric layer disposed on the bottom electrode, and a top electrode disposed on the piezoelectric layer.
A piezo sensor having an inner conductor having an inner conductor segment, where the inner conductor segment forms a tubular sidewall having a break, and also having an interior surface and an exterior surface; a plurality of individually polarized piezoelectric members, each having an inner face and an outer face, and each inner face contacting the first conductor exterior surface, each piezoelectric member being adjacent to another on the exterior face of the inner conductor, forming sets of adjacent faces; an outer conductor having an outer conductor segment forming a tubular sidewall having a break, the outer conductor having an interior surface and an exterior surface, where the interior surface contacts the outer face of the piezoelectric members; and where the break of the outer conductor segment is alignable with adjacent faces of two of the plurality of piezoelectric members, and further being alignable with the break of the inner conductor segment.. .
|Temperature controlled acoustic resonator comprising heater and sense resistors|
A bulk acoustic wave (baw) resonator device comprises a heating cod disposed over a first side of the piezoelectric layer and substantially around a perimeter adjacent to the active area of the acoustic resonator, the heating coil comprising a resistor configured to receive a heater current; and a heat sensor disposed over a second side of the piezoelectric layer and opposing the first side, the heat sensor configured to adjust the heater current in response to a temperature of the heating coil.. .
|Piezoelectric vibration element, piezoelectric vibration device, and portable terminal|
A piezoelectric vibration element capable of reducing occurrence of unnecessary vibration, and a piezoelectric vibration device and a portable terminal using the same are disclosed. The piezoelectric vibration element includes a plurality of electrode layers and a plurality of piezoelectric layers being stacked along a first direction, the piezoelectric vibration element having two surfaces that face each other to be at intervals in the first direction, and vibrating in bending mode in the first direction with an amplitude varying along a second direction perpendicular to the first direction according to input of an electric signal, one of the two surfaces having such a shape that a central portion thereof in a third direction perpendicular to the first direction and the second direction protrudes as compared with opposite end portions thereof in the third direction..
|Piezoelectric generator, sensor node, and method of manufacturing piezoelectric generator|
A piezoelectric generator includes: a base body; and at least one piezoelectric transducer disposed on the base body, and including a first electrode, a piezoelectric body, and a second electrode, wherein the piezoelectric transducer includes a support section fixed to the base body, and a vibrating section disposed apart from the base body, having one end connected to the support section and the other end set as a free end, and vibrating due to a vibration applied externally, and a distance between the other end of the vibrating section and the base body is larger than a distance between the one end of the vibrating section and the base body.. .
|Piezoelectric array employing integrated mems switches|
Switchable micromachined transducer arrays are described where a microelectromechanical systems (mems) switch, or relay, is monolithically integrated with a transducer element. In embodiments, the mems switch is implemented in the same substrate as the transducer array to implement one or more logic, addressing, or transducer control function.
|Acoustic wave device and electronic apparatus including same|
An acoustic wave device includes a piezoelectric substrate, an idt electrode including plural electrode fingers disposed above an upper surface of the piezoelectric substrate, a first dielectric film made of oxide disposed above the upper surface of the substrate for covering the electrode fingers, and a second dielectric film made of non-oxide disposed on upper surfaces of the electrode fingers and between the first dielectric film and each of the electrode fingers. The first dielectric film contacts the upper surface of the piezoelectric substrate at a position between electrode fingers out of the plural electrode fingers adjacent to each other.
|Piezoelectric component and method for producing a piezoelectric component|
A piezoelectric component has at least one piezoelectric ceramic layer and at least one electrode adjacent the piezoelectric ceramic layer. The piezoelectric ceramic layer has a piezoelectric ceramic material of the general formula pb1-x-y-[(2a-b)/2]-p/2v[(2a-b)/2-p/2]″cupbaxsry[(tizzr1-z)1-a-bwareb]o3, where 0≦x≦0.035, 0≦y≦0.025, 0.42≦z≦0.5, 0.0045≦a≦0.009, 0.009≦b≦0.011, 2a>b, p≦2a-b, re is a rare earth metal, and v″ is a pb vacancy..
|Liquid nebulizing assembly with solid nozzle plate|
A liquid nebulizing assembly includes an actuating ring plate, a solid nozzle plate and a piezoelectric element. A plurality of nozzle holes is formed and distributed all over the solid nozzle plate and included between the actuating ring plate and the piezoelectric element.
|Piezoelectric device and method for manufacturing piezoelectric device|
A piezoelectric device prevents damage to a piezoelectric thin film caused by etching and the manufacturing cost of the piezoelectric device is reduced. On a surface of a support layer formed on a support substrate, an etching adjustment layer is formed.
|Displacement detection device and displacement detection method|
A displacement detection device includes a piezoelectric sensor. The piezoelectric sensor is provided with a piezoelectric sheet on both principal surfaces of which detection electrodes are formed.
|Three dimensional piezoelectric mems|
Method and apparatus for a piezoelectric apparatus are provided. In some embodiments, a method for fabricating a piezoelectric device may include etching a series of vertical trenches in a top substrate portion, depositing a first continuous conductive layer over the trenches and substrate, depositing a continuous piezoelectric layer over the first continuous conductive layer such that the piezoelectric material has trenches and sidewalls, depositing a second continuous conductive layer over the continuous piezoelectric layer, etching through the vertical trenches of the first continuous conductive layer, continuous piezoelectric layer, second continuous conductive layer, and top substrate portion into a bottom substrate portion, etching a series of horizontal trenches in the bottom substrate portion such that the horizontal trenches and vertical trenches occupy a continuous free space and allow movement of a piezoelectric mems device created by the above method in three dimensions..
|Sensor with vacuum-sealed cavity|
A method and apparatus for detecting underwater sounds is disclosed. An embodiment of the apparatus includes a substrate with a vacuum-sealed cavity.
|Device and method for measuring the level of a liquid within a container|
A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprises a housing and a piezoelectric element adapted for generating vibrations when energized. A coupling pad is provided which is bonded to the piezoelectric element for transmitting the vibrations to a surface of the container.
|Piezoelectric power generating device and manufacturing method thereof|
The piezoelectric power generating device includes a piezoelectric power generating plate including a piezoelectric plate having a polarized regions that are different in polarization direction, and a support member attached to the piezoelectric power generating plate. Further, the piezoelectric power generating plate includes a fixed portion fixed to the support member, a free end displaced relative to the fixed portion when an external forced, such as a vibration forced, is applied, and a cutout located between the fixed portion and the free end..
|Systems and methods for assessing tissue contact|
Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device.
|Piezoelectric device and method for manufacturing piezoelectric device|
In a method for manufacturing a piezoelectric device, a silicon oxide film is deposited by sputtering on a surface of a single-crystal piezoelectric substrate closer to an ion-implanted region, and a silicon nitride film is deposited by sputtering on a surface of the dielectric film opposite to a side thereof closer to the single-crystal piezoelectric substrate. The silicon oxide film has a composition that is deficient in oxygen relative to the stoichiometric composition.
|Poling method, poling device for piezoelectric element and inkjet print head|
There is provided a poling method for a piezoelectric element, including performing preliminary poling of the piezoelectric element twice or more with different voltages and measuring conductance of the piezoelectric element with regard to respective voltage, establishing a relational expression between the voltage and the conductance of the piezoelectric element, calculating targeted conductance required to exhibit a targeted piezoelectric characteristic of the piezoelectric element, and selecting a targeted voltage level corresponding to the targeted conductance and performing final poling of the piezoelectric element at the targeted voltage level.. .
|Microfluidic jetting device with piezoelectric actuator and method for making the same|
Disclosed herein is a microfluidic jetting device having a piezoelectric member positioned above a displaceable membrane. A voltage is applied across the piezoelectric member causing deformation of the piezoelectric member.
|Surface acoustic wave device|
In a surface acoustic wave device, a plurality of surface acoustic wave elements include piezoelectric bodies having the same cut-angle. A propagation azimuth of a surface acoustic wave in at least one of surface acoustic wave elements is different from a propagation azimuth of a surface acoustic wave in at least another one of the surface acoustic wave elements.
|Acoustic resonator comprising integrated structures for improved performance|
An acoustic resonator structure comprises a first electrode disposed on a substrate, a piezoelectric layer disposed on the first electrode, a second electrode disposed on the piezoelectric layer, and an air cavity disposed in the substrate below at least a portion of a main membrane region defined by an overlap between the first electrode. The acoustic resonator structure may further comprise various integrated structures at or around the main membrane region to improve its electrical performance..
|Acoustic resonator having temperature compensation|
An acoustic resonator structure comprises a substrate having an air cavity, an acoustic stack disposed over the substrate and comprising a piezoelectric material disposed between a first electrode and a second electrode, and an acoustic reflector disposed over the substrate and comprising a single pair of acoustic impedance layers configured to reflect acoustic waves produced by vibration of the acoustic stack, wherein at least one of the acoustic impedance layers comprises a temperature compensating material.. .
|Vibration element, method for manufacturing same, and vibration-type driving device|
An aspect of the present invention relates to a vibration element comprising: a substrate; a ceramic layer containing glass and provided on the substrate; and a piezoelectric element comprising an electrode layer fixed to the substrate with the ceramic layer therebetween and a piezoelectric layer, wherein the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer are integrated by the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer being sintered together at a sintering temperature of from 800° c. Or higher to 940° c.
|Vibration element, method for manufacturing same, and vibration-type driving device|
A vibration element includes: a substrate; a ceramic layer containing molten glass and provided on the substrate; and a piezoelectric element fixed to the substrate with the ceramic layer therebetween, wherein the piezoelectric element includes a first electrode layer provided in contact with the ceramic layer, a second electrode layer, and a piezoelectric layer provided between the first electrode layer and the second electrode layer, and the first electrode layer has a thickness larger than that of the second electrode layer.. .
|Receiving circuit, semiconductor device, and sensor device|
A receiving circuit (10) includes an amplifier (15) which amplifies receiving signals (sp, sn) of a piezoelectric sensor (2), and a plurality of transistors (11a, 11b) or (12a, 12b), which are connected in parallel to between one end of the piezoelectric sensor (2) and one end of the amplifier (15), and are turned on with phase shift when switching is performed to receiving operations.. .
|Group iii nitride semiconductor light-emitting device and method for producing the same|
The present invention provides a group iii nitride semiconductor light-emitting device exhibiting high light efficiency achieved by relaxing a piezoelectric field generated in a light-emitting layer without deteriorating the crystal quality of the light-emitting layer, and a method for producing the same. The light-emitting device has a light-emitting layer in which layer units are repeatedly deposited.
|Piezoelectric sensors and sensor arrays for the measurement of wave parameters in a fluid, and method of manufacturing therefor|
The present disclosure relates to piezoelectric sensors and piezoelectric sensor arrays, to methods of manufacturing therefor, and to a method of measuring characteristics of a mechanical wave using a piezoelectric sensor array. A piezoelectric sensor is formed of a silicon substrate on which an electrical barrier is added.
|Ultrasound probe, ultrasound diagnostic imaging apparatus and manufacturing method of ultrasound probe|
Disclosed is an ultrasound probe which outputs ultrasound on a basis of a drive signal which is to be received. The ultrasound probe including a composite piezoelectric layer in which a piezoelectric material and a polymer material are arranged alternately in a one-dimensional array or in a two-dimensional array, an acoustic reflection layer which has an acoustic impedance higher than an acoustic impedance of the composite piezoelectric layer and an adhesion layer which bonds the composite piezoelectric layer and the acoustic reflection layer wherein in a bonding surface of the composite piezoelectric layer that bonds with the acoustic reflection layer, a polymer material part is concaved in a direction opposite to an acoustic reflection layer side comparing to an piezoelectric material part..
|Ultrasound transducer, ultrasound probe including the same, and ultrasound diagnostic equipment including the ultrasound probe|
Provided are an ultrasound transducer, an ultrasound probe including the ultrasound transducer, and ultrasound diagnostic equipment including the ultrasound probe. The ultrasound transducer includes a piezoelectric unit including a plurality of piezoelectric elements which vibrate to convert ultrasound waves into electrical signals and electrical signals back into ultrasound waves, and a dummy piezoelectric unit which is disposed at edges of the effective piezoelectric unit and includes a plurality of dummy piezoelectric elements which vibrate due to vibration of the piezoelectric unit..
|Body surface sensors|
A device for sensing lung sounds, comprising: a piezoelectric sensor comprising an electrical conductive plate attached to a piezoelectric material, said sensor encased in a body structure; a first electric wire connected to the piezoelectric material on the opposite side of said plate; a second electric wire connected to said plate; a connector connected to the other ends of said first and second electric wires; and an adhesive layer connected to the surface of said plate on the side opposite to the piezoelectric material, said adhesive layer facing away from said plate; said device adapted to provide electrical signals representing vibrations present on the surface of a object when it is attached to said object surface with said adhesive layer; said electrical signals resulting from vibrations on the object surface, wherein stress applied on the piezoelectric material generates electrical voltage-difference on both sides of the piezoelectric material, creating voltage build-up on said first and second electric wires.. .
|Method for accelerating combustion, apparatus thereof and heat engine|
A method for accelerating combustion includes installing a piezoelectric element in the vicinity of a combustion chamber that combusts fuel, applying a magnetic field to the piezoelectric element, and radiating electromagnetic waves that are produced by the piezoelectric element over at least the fuel in the combustion chamber. These electromagnetic waves include far-infrared radiation..
|Device for moving air|
A device for moving air comprising a piezoelectric element attached to a planar body. The planar body is configured to oscillate at a movable end generating an airflow in response to applying alternating electric current to said piezoelectric element.
|Piezoelectric cooling fan|
A piezoelectric cooling fan comprises a support frame and two piezoelectric actuators. Each piezoelectric actuator includes an electrical-conductive plate and a piezoelectric plate attached to the electrical-conductive plate, wherein an edge portion of the electrical-conductive plate is fixedly attached to a base of the support frame and approximately aligned with an edge portion of the piezoelectric plate attached thereto.
|Cantilevered probe detector with piezoelectric element|
A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator.
|Compound semiconductor device and method for manufacturing the same|
An algan/gan-hemt has a structure including: compound semiconductor layers formed on a substrate; a gate electrode, a gate pad that has a current path formed between the gate electrode and itself, and a semiconductor layer that is spontaneously polarized and piezoelectrically polarized, which are formed on the compound semiconductor layer; and a gate electrode connection layer formed on the semiconductor layer, wherein the gate electrode connection layer and the gate electrode are electrically connected with each other. This structure which is relatively simple allows the algan/gan-hemt to realize an intended normally-off operation without causing such inconveniences as increase in a sheet resistance, increase in an on-resistance, and increase in a leakage current..
|Low acoustic noise capacitors|
The described embodiments relate generally to a capacitor assembly for mounting on a printed circuit board (pcb) and more specifically to designs for mechanically isolating the capacitor assembly from the pcb to reduce an acoustic noise produced when the capacitor imparts a piezoelectric force on the pcb. Termination elements in the capacitor assembly, including a porous conductive layer in the capacitor assembly may reduce an amount of vibrational energy transferred from the capacitor to the pcb.
|Dust removing device and imaging device|
Provided is a dust removing device that can be designed and controlled appropriately and has high dust removal performance even at low temperature, and an imaging device using the dust removing device. In a dust removing device to be set on a base, including a piezoelectric element formed of a piezoelectric material and a pair of opposing electrodes, a vibration member, and a fixation member containing at least a high molecular compound component, a phase transition temperature t from a first ferroelectric crystal phase to a second ferroelectric crystal phase of the piezoelectric material is set to −60° c.≦t≦−5° c., and whereby, the dust removing device can be designed and controlled appropriately and high dust removal performance can be obtained even at low temperature..
|Piezoelectric resonator element and piezoelectric resonator|
A piezoelectric resonator element includes a piezoelectric substrate formed of an at-cut quartz crystal substrate in which the thickness direction thereof is a direction parallel to the y′ axis; and excitation electrodes disposed so as to face vibrating regions on both front and rear principal surfaces of the piezoelectric substrate. The piezoelectric substrate includes a rectangular excitation portion in which sides parallel to the x axis are long sides thereof, and sides parallel to the z′ axis are short sides thereof; and a peripheral portion having a smaller thickness than the excitation portion and formed around the excitation portion.
|Vibration power-generating strain wave gearing|
The strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear that is disposed coaxially therein and is flexible in the radial direction, and a wave generator that is disposed coaxially inside the externally toothed gear. The flexible externally toothed gear is bent in the radial direction by the wave generator and meshes with the rigid internally toothed gear in sections.
The present disclosure provides an ionic ring comprising a number of piezoelectric elements, a piezoelectric device including the ionic ring, and a piezoelectric generator including the ionic ring and host devices incorporating the piezoelectric generator. The piezoelectric generator can be used to generate energy on a portable electronic device in response to mechanical deformation.
|Leaf module for a multi-leaf collimator and multi-leaf collimator|
A leaf module for a multi-leaf collimator comprises a leaf unit and a leaf drive unit. The leaf unit comprises a leaf for shielding beams from a selected area.
|Cooling device and a cooling assembly comprising the cooling device|
A cooling device comprises a heat sink having fins and a piezofan having a piezoelectric element attached to a planar body. The planar body is capable of oscillating at a movable end in response to applying alternating electric current to the piezoelectric element, thereby generating an air flow toward an output of the cooling device.
|Systems and methods for monitoring cutting forces in peripheral end milling|
Systems and methods for monitoring cutting forces in a peripheral end milling process are disclosed. The systems and methods comprise a sensor module that integrates a thin-film polyvinylidene fluoride (pvdf) piezoelectric strain sensor and an in situ data logging platform for monitoring such cutting forces.
|Ignition device and method for a turbomachine combustion chamber|
A method and device for igniting a turbomachine combustion chamber including alternately: an intake phase of a fluid into a chamber through an intake port, during which a piston compresses an elastic mechanism under pressure of the fluid such that the elastic mechanism applies onto a piezoelectric element a force sufficient for the piezoelectric element to induce between the electrodes an electric voltage enabling an electric arc to be generated, until the piston reaches a predetermined position for closing a valve for sealing the intake port; and an exhaust phase of the fluid, during which the elastic mechanism pushes back the piston to induce a fluid ejection out of the chamber through an exhaust port, and the valve is open.. .
|1-d tire patch apparatus and methodology|
Disclosed is a tire mountable apparatus and method that includes a substrate defining a longitudinal direction, a top surface and a bottom surface. The substrate has a plurality of conductor terminals arranged in a substantially linear relationship.
|Method for manufacturing a high-temperature ultrasonic transducer using a lithium niobate crystal brazed with gold and indium|
A process for manufacturing a high-temperature ultrasonic transducer, said transducer comprising a steel or metal top electrode, a piezoelectric converter, a steel or metal support ensuring the interface between the converter and the propagation medium of the acoustic waves, a first joint between the support and the piezoelectric crystal, and a second joint between the converter and the top electrode, comprises, to produce said gold-and-indium-based joints, a brazing and diffusing operation comprising the following steps: a first step of increasing temperature to a first temperature comprised between about 150° c. And about 400° c.
|Pressure sensing glove|
An pressure sensing glove in which at least five, preferably at least seven and most preferably at least nine pressure sensors are intrinsic to the glove manufacture, usually sandwiched between layers of the glove. Between five to nine pressure sensors are positioned throughout the glove, and the pressure sensors themselves may be capacitive sensors, piezoelectric sensors, air filled bladder pressure sensors in communication with hollow tubes further connected to electronic pressure sensors, or any other sensor known in the art..
|Complex device and robot hand drive control apparatus|
A complex device includes: a substrate having a thick portion, a cavity and a membrane for bridging the cavity; and multiple piezoelectric elements having a lower electrode, a piezoelectric film and an upper electrode. A part of the piezoelectric elements has a projecting portion arranged on the upper electrode.
|System comprising a secondary device with a piezoelectric actuator wirelessly supplied and controlled by a primary device|
A system for contactless transmission of energy and control signals between a primary device and a secondary device. The primary device has a primary set with at least one primary coil and an electronic supply driver for supplying primary signals to the primary set of primary coils.
|Ultrasonic device, ultrasonic probe, electronic equipment, and ultrasonic imaging apparatus|
An ultrasonic device includes an ultrasonic element array substrate having a plurality of ultrasonic elements that each include a piezoelectric body; a fixing frame having a recess to which the ultrasonic element array substrate is fixed, and a perforated portion formed with a through hole by opening a part of the bottom face of the recess, wherein an element-formed surface of the ultrasonic element array substrate is faced to the perforated portion; an acoustic lens secured to the fixing frame so as to cover the perforated portion; and an acoustic matching layer formed of a resin being arranged between the ultrasonic element array substrate and the acoustic lens, so as to secure them to each other. The acoustic lens and the fixing frame are in contact with each other, and the thickness of the acoustic matching layer is maintained at a fixed value..
|Liquid ejection head and liquid ejection apparatus|
A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.. .
|Liquid ejecting head, liquid ejecting apparatus, piezoelectric element and sensor|
A liquid ejecting head including a piezoelectric element, the piezoelectric element includes: a first electrode; an orientation control layer provided on the first electrode, the orientation control layer having a perovskite structure including bi in an a site and fe and ti in a b site, and the orientation control layer being self-oriented in a (100) plane; a piezoelectric body layer provided on the orientation control layer and made of a piezoelectric material of the perovskite structure preferentially oriented in the (100) plane; and a second electrode provided on the piezoelectric body layer.. .
|Liquid ejection head and image forming apparatus including the liquid ejection head|
A liquid ejection head includes a channel plate, a diaphragm member, and a piezoelectric member. The channel plate includes a separate liquid chamber, a fluid resistance portion, and a liquid introducing portion.
|Inkjet recording apparatus|
An inkjet recording apparatus includes a head driving section that includes a drive pulse generator and a selector. The drive pulse generator generates, as the waveforms of drive voltage to be applied to the piezoelectric elements, a plurality of drive waveforms that includes an ink-ejection drive waveform defined according to the number of times of ink ejection to be made from the corresponding nozzle, and a reset waveform which causes greater drawing of the meniscus in the corresponding nozzle than by the ink-ejection drive waveform.
A touch operation device includes a piezoelectric element, a touch detection unit, and a piezoelectric body control circuit. The piezoelectric element has a piezoelectric property and flexibility.
|Piezoelectric thin film resonator, filter, and duplexer|
A piezoelectric thin film resonator includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode facing each other across at least a part of the piezoelectric film; and an insertion film that is inserted into the piezoelectric film, is located in at least a part of an outer periphery region in a resonance region in which the lower electrode and the upper electrode face each other across the piezoelectric film, and is not located in a center region of the resonance region.. .
A composite substrate according to the present invention includes a piezoelectric substrate that is a single-crystal lithium tantalate or lithium niobate substrate, a support substrate that is a single-crystal silicon substrate, and an amorphous layer joining together the piezoelectric substrate and the support substrate. The amorphous layer contains 3 to 14 atomic percent of argon.
|Composite substrate and method for manufacturing the same|
The present invention provides a composite substrate comprising a piezoelectric substrate that is a single-crystal lithium tantalate or lithium niobate substrate, a support substrate that is a single-crystal silicon substrate, and an amorphous layer containing argon and joining together the piezoelectric substrate and the support substrate. The amorphous layer includes, in order from the piezoelectric substrate toward the composite substrate, a first layer, a second layer, and a third layer.
|Mems vibrating structure using an orientation dependent single-crystal piezoelectric thin film layer|
A micro-electrical-mechanical system (mems) vibrating structure includes a carrier substrate, a first anchor, a second anchor, a single crystal piezoelectric body, a first conducting layer, and a second conducting layer. The first anchor and the second anchor are provided on the surface of the carrier substrate.
|Mems vibrating structure using an orientation dependent single-crystal piezoelectric thin film layer|
A micro-electrical-mechanical system (mems) vibrating structure includes a carrier substrate, a first anchor, a second anchor, a single crystal piezoelectric body, and a conducting layer. The first anchor and the second anchor are provided on the surface of the carrier substrate.
|Method of damping actuator with translation mechanism and actuator|
According to one embodiment, a method of damping an actuator to reduce an amplitude of a resonance peak of the actuator, including a piezoelectric element and a translation mechanism, includes securing one surface of a restraint member having at least two surfaces to a movable part of the translation mechanism with an elastic or viscoelastic body therebetween, securing the other surface of the restraint member to a support portion of the translation mechanism with an elastic or viscoelastic body therebetween, and converting vibration energy of the movable part into thermal energy, based on distortion caused by deformation of the elastic or viscoelastic body.. .
|Electroacoustic converter film, flexible display, vocal cord microphone, and musical instrument sensor|
Provided is an electroacoustic converter film including: a polymeric composite piezoelectric body having piezoelectric particles dispersed in a viscoelastic matrix which is formed of a polymer material exhibiting viscoelasticity at ordinary temperatures; thin film electrodes formed on both sides of the polymeric composite piezoelectric body; and protective layers formed on surfaces of the thin film electrodes. The electroacoustic converter film serves as a speaker capable of being integrated with a flexible display without impairing lightweightness or flexibility, and has considerable frequency dispersion in the storage modulus and also has a local maximum of the loss tangent around ordinary temperatures.