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Piezoelectric patents



      
           
This page is updated frequently with new Piezoelectric-related patent applications. Subscribe to the Piezoelectric RSS feed to automatically get the update: related Piezoelectric RSS feeds. RSS updates for this page: Piezoelectric RSS RSS


Piezoelectric-based, self-sustaining artificial cochlea

Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece

Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece

Date/App# patent app List of recent Piezoelectric-related patents
07/10/14
20140195103
 Energy harvesting power output measurement apparatus and methods for cycling patent thumbnailEnergy harvesting power output measurement apparatus and methods for cycling
The present teachings provide apparatus and methods for measuring the power output of a person, such as a cyclist. According to various embodiments, while measuring the power output, the present teachings provide for the harvesting of the input energy to provide electrical power to the apparatus.
07/10/14
20140194673
 Piezoelectric-based, self-sustaining artificial cochlea patent thumbnailPiezoelectric-based, self-sustaining artificial cochlea
Piezoelectric transducer arrays and methods of making the same are discussed. Such an array can include a piezoelectric film comprising a plurality of segments.
07/10/14
20140192628
 Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece patent thumbnailPiezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece
A piezoelectric vibrating piece includes a pair of vibrating arm portions, a base portion which is arranged between a pair of vibrating arm portions, and connecting portions which connect proximal end portions of a pair of vibrating arm portions and a proximal end portion of the base portion. Narrow width portions are provided at the base of the base portion..
07/10/14
20140192625
 Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece patent thumbnailPiezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece
A piezoelectric vibrating piece includes a pair of vibrating arm portions which are arranged with a center axis interposed therebetween, a base portion which is arranged between a pair of vibrating arm portions and fixed to the outside, and a pair of connecting portions which connect proximal end portions of a pair of vibrating arm portions and a proximal end portion of the base portion. The distance between distal end portions of the vibrating arm portions and the center axis is smaller than the distance between the proximal end portions of the vibrating arm portions and the center axis..
07/10/14
20140192437
 Head rotator assembly for tape drive patent thumbnailHead rotator assembly for tape drive
A head rotator assembly (22) for positioning a head (20) of a tape drive (10) relative to a storage tape includes a head supporter (230) and a supporter mover assembly (232). The head supporter (230) is coupled to and supports the head (20).
07/10/14
20140192118
 Piezoelectric inkjet die stack patent thumbnailPiezoelectric inkjet die stack
A piezoelectric inkjet die stack includes a circuit die stacked on a substrate die, a piezoelectric actuator die stacked on the circuit die, and a cap die stacked on the piezoelectric actuator die. Each die in succession from the circuit die to the cap die is narrower than the previous die..
07/10/14
20140192105
 Piezoelectric element drive method and liquid ejecting device patent thumbnailPiezoelectric element drive method and liquid ejecting device
Liquid is forced to be ejected from a liquid chamber as a drive voltage is applied to the piezoelectric element that forms part or all of the walls of the liquid chamber by means of a drive circuit to deform the piezoelectric element. The drive circuit applies a pre-drive voltage to the piezoelectric element prior to the application of the drive voltage waveform for driving the piezoelectric element.
07/10/14
20140191826
 Piezoelectric thin film resonator and filter patent thumbnailPiezoelectric thin film resonator and filter
A piezoelectric thin film resonator includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode located to sandwich the piezoelectric film; a load film formed from patterns in a resonance region in which the lower electrode and the upper electrode face each other across the piezoelectric film, wherein the patterns are formed so as to surround a center of the resonance region and intersect with a pathway extending from the center to an outer periphery of the resonance region.. .
07/10/14
20140191622
 Piezoelectric component and method for producing a piezoelectric component patent thumbnailPiezoelectric component and method for producing a piezoelectric component
A piezoelectric component (1), which serves particularly as a piezoelectric sensor or piezoelectric actuator, comprises a basic body (6) which has a first ceramic layer (7), a second ceramic layer (8) and an internal electrode layer (9). In this case, the internal electrode layer (9) is provided at least partially between the first ceramic layer (7) and the second ceramic layer (8).
07/10/14
20140191621
 Piezoelectric component and method for producing a piezoelectric component patent thumbnailPiezoelectric component and method for producing a piezoelectric component
A piezoelectric component (1), which serves in particular as a piezoelectric sensor or a piezoelectric actuator, comprises a main body (2). The main body (2) has a first ceramic layer (15), a second ceramic layer (16) and an inner electrode layer (17).
07/10/14
20140191620
Piezoelectric component and method for producing a piezoelectric component
An electrically conductive contact layer (4) is provided with a joining material (9) during a method for producing a piezoelectric component (1), in particular a piezoelectric sensor (1). To this end, the electrically conductive contact layer (4) can be dipped into a paste that serves to form the joining material (9).
07/10/14
20140191619
Piezoelectric device and method for manufacturing piezoelectric device
In a method of manufacturing a piezoelectric device, among a +c plane on a +z axis side of a piezoelectric thin film and a −c plane on a −z axis side of the piezoelectric thin film, the −c plane on the −z axis side of the piezoelectric thin film is etched. Thus, −z planes of the piezoelectric thin film on which epitaxial growth is possible are exposed.
07/10/14
20140191618
Poling treatment method, plasma poling device, piezoelectric body and manufacturing method thereof, film forming device and etching device, and lamp annealing device
A plasma poling device includes a holding electrode (4) which is disposed in a poling chamber (1) and holds a substrate to be poled (2), an opposite electrode (7) which is disposed in the poling chamber and disposed facing the substrate to be poled held on the holding electrode, a power source (6) electrically connected to one electrode of the holding electrode and the opposite electrode, a gas supply mechanism supplying a plasma forming gas into a space between the opposite electrode and the holding electrode, and a control unit controlling the power source and the gas supply mechanism. The control unit controls the power source and the gas supply mechanism so as to form a plasma at a position facing the substrate to be poled and to apply a poling treatment to the substrate to be poled..
07/10/14
20140191616
Mems switch
A mems switch has fixed support, a plate-shaped flexible beam having at least one end immovably supported by the fixed support and having an extending movable surface, a movable electric contact disposed on the movable surface of the flexible beam, a fixed electric contact facing the movable electric contact and disposed at a fixed position relative to the fixed support, first piezoelectric driver disposed above the movable surface of the flexible beam, extending from a portion above the fixed support towards the movable electric contact, and capable of displacing the movable electric contact towards the fixed electric contact by voltage driving, and second piezoelectric driver disposed at least on the movable surface of the flexible beam and capable of so driving a movable part of the flexible beam by voltage driving that the movable electric contact is separated from the fixed electric contact.. .
07/10/14
20140191221
Piezoelectric pressure sensor
Replacement sheet. .
07/10/14
20140191062
Liquid ejection head and liquid ejection apparatus
Provided is a liquid ejection head, including a pressure chamber in which a liquid flows, at least a part of a wall surface of the pressure chamber being formed of a piezoelectric member; an ejection orifice for ejecting the liquid in the pressure chamber pressurized by deformation of the piezoelectric member; a temperature control liquid flow path in which a temperature control liquid flows, the temperature control liquid flow path being provided independently from the pressure chamber and formed so as to be adjacent to the pressure chamber via the wall surface of the pressure chamber, at least a part of a wall surface of the temperature control liquid flow path being formed of the piezoelectric member; and a circulation liquid flow path communicating with the temperature control liquid flow path, for circulating the temperature control liquid.. .
07/10/14
20140190267
Fastener tension monitoring system
The fastener tension monitoring system provides for automatic notification when a structural tensile fastener, such as a bolt, is loosened. The system incorporates piezoelectric material in the core of the fastener shank or deposited around the shank.
07/10/14
20140190228
Method and device for compensating deviations during a deforming operation between two beams of a press
The invention relates to a method for compensating deviations in a deforming operation between two beams of a press, comprising of arranging one or more compensating element at a suitably chosen location in the press, detecting the deviations and moving the compensating element(s) relative to the beams by (electro) mechanical means during the deforming operation such that the detected deviations are compensated. The compensating elements can be moved here to an over-compensating position prior to the deforming operation and pressed out of their over-compensating position during the operation by the load on the beam, wherein each compensating element exerts an adjustable resistance force on surrounding parts of the press.
07/03/14
20140188055
Devices for clearing blockages in in-situ artificial lumens
Devices and methods for the effective clearing of artificial tubes, especially in-situ clearing of artificial tubes in a living being is covered in this disclosure. An elongated clearing member includes either a fixed or an adjustable element that selectively defines the portion of the elongated clearing member that is insertable within the artificial tube.
07/03/14
20140187957
Ultrasonic transducer electrode assembly
The present disclosure provides a method of fabricating an ultrasound transducer. A substrate having a first side and a second side opposite the first side is provided.
07/03/14
20140187956
Ultrasonic transducer electrode assembly
The present disclosure provides a method of fabricating an ultrasound transducer. A substrate having a first side and a second side opposite the first side is provided.
07/03/14
20140187003
High electron mobility transistor and manufacturing method thereof
The present invention discloses a high electron mobility transistor (hemt) and a manufacturing method thereof. The hemt includes a semiconductor layer, a barrier layer on the semiconductor layer, a piezoelectric layer on the barrier layer, a gate on the piezoelectric layer, and a source and a drain at two sides of the gate respectively, wherein each bandgap of the semiconductor layer, the barrier layer, and the piezoelectric layer partially but not entirely overlaps the other two bandgaps.
07/03/14
20140186200
Fan blade adjustment piezoelectric actuator
A pump for driving a hydraulic fluid to adjust an angle of an airfoil has a transmission to be rotated to change the angle of incident of a plurality of airfoils. The transmission is driven through a rotating input to in turn rotate, and change the angle.
07/03/14
20140186062
Developer container unit, developing unit, and process cartridge
A developer container unit includes a container containing developer and a piezoelectric film for detecting an amount of developer in the container. A sensitivity of the piezoelectric film to a stress in a direction parallel to a film surface is greater than a sensitivity of the piezoelectric film to a stress in a direction perpendicular to the film surface, and the piezoelectric film is deformable with a movement thereof relative to the developer..
07/03/14
20140185140
Vibration apparatus and imaging appliance
A vibration apparatus includes a plate-shaped dust prevention member, a vibration application member, and an electrode. The vibration application member includes a flexible thin plate-shaped piezoelectric member, and vibrates the dust prevention member.
07/03/14
20140184878
Piezoelectric material, piezoelectric element, and electronic apparatus
A piezoelectric material according to an embodiment of the present invention contains no lead, has a low degree of temperature dependency of piezoelectric performance within operation temperature ranges of piezoelectric elements, and good piezoelectric properties.. .
07/03/14
20140184876
Piezoelectric material, piezoelectric element, and electronic apparatus
A piezoelectric material includes, as a main component, a perovskite-type metal oxide represented by a general formula (ba1-xcax)a(ti1-y-zsnyzrz)o3 where 1.00≦a≦1.01, 0.125≦x≦0.300, 0≦y≦0.020, and 0.041≦z≦0.074, the perovskite-type metal oxide containing copper (cu) and manganese (mn). A cu content relative to 100 parts by weight of the metal oxide is 0.02 parts by weight or more and 0.60 parts by weight or less on a metal basis, and a mn content relative to 100 parts by weight of the metal oxide is 0.12 parts by weight or more and 0.40 parts by weight or less on a metal basis..
07/03/14
20140184706
Liquid ejecting head and liquid ejecting apparatus
According to a liquid ejecting head, it is possible to suppress erosion of a vibrating plate by liquid, suppress generation of variation in a vibrating property, and realize a thin head. The liquid ejecting head includes a flow path formation substrate on which a pressure generation chamber communicating with nozzle openings for discharging liquid is provided, an elastic film which is provided on one surface side of the flow path formation substrate and seals the pressure generation chamber, and a piezoelectric actuator which is a pressure generation unit which is provided on the elastic film to deform the elastic film.
07/03/14
20140184029
Microelectromechanical system-based resonator device
The disclosure provides a structure for a microelectromechanical system (mems)-based resonator device. The structure for the mems-based resonator device includes at least one resonator unit.
07/03/14
20140184028
Hybrid radio frequency component
Methods and systems may provide for a hybrid rf mems component design including an electrostatic actuation and a piezoelectric actuation. In one example, the method may include applying a first voltage to generate a first piezoelectric force to reduce a first gap between a cantilever and an actuation electrode, and applying a second voltage to generate an electrostatic force to create contact between the cantilever and a transmission electrode..
07/03/14
20140184027
Layout and method of singulating miniature ultrasonic transducers
The present disclosure provides a method of singulating a plurality of miniature ultrasound transducers from a wafer. The method includes receiving a wafer on which a plurality of miniature ultrasound transducers is formed.
07/03/14
20140184023
Layout and method of singulating miniature ultrasonic transducers
The present disclosure provides a method of singulating a plurality of miniature ultrasound transducers from a wafer. The method includes receiving a wafer on which a plurality of miniature ultrasound transducers is formed.
07/03/14
20140184022
Porosity control in piezoelectric films
A piezoelectric film having a porosity between 20 and 40%, a thickness ranging from tens of microns to less than a few millimeters can be used to form an ultrasonic transducer ut for operation in elevated temperature ranges, that emit pulses having a high bandwidth. Such piezoelectric films exhibit greater flexibility allowing for conformation of the ut to a surface, and obviate the need for couplings or backings.
07/03/14
20140184021
Piezoelectric stack transducer
Provided is a piezoelectric stack transducer. In a transducer portion, a plurality of piezoelectric transducers which output maximum amplitude at different frequencies are continuously stacked.
07/03/14
20140184020
Ultrasonic vibration apparatus
Substantially uniform rigidity is ensured in all radial directions while achieving a size reduction. An ultrasonic surgical apparatus is provided, including a polygonal columnar elastic body that is formed of an elastic body and that has a substantially regular polygonal cross-section; plate-like piezoelectric elements that are secured to mutually opposing side surfaces of the polygonal columnar elastic body and that are polarized in a plate-thickness direction; a rod-like contactor that is secured to an end of the polygonal columnar elastic body and that has a smaller diameter than the polygonal-columnar elastic body; and a drive-pulse generating circuit that causes the rod-like contactor to ultrasonically vibrate by generating a vertical vibration which expands/contracts the polygonal columnar elastic body in the longitudinal direction by applying an ac voltage to the piezoelectric elements in the plate-thickness direction..
07/03/14
20140184019
Circuit module and composite circuit module
A circuit module and a composite circuit module, which suppress or prevent damage to a connection to or within a device when heat is applied, includes a saw filter including a piezoelectric substrate. In a package substrate that is a resin substrate, the saw filter is mounted.
07/03/14
20140182385
Photoacoustic probe and photoacoustic device having the same
A photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact caused by an ultrasonic wave generated in the photoacoustic probe without mounting a separate device. The photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact by changing a configuration or a structure provided in the photoacoustic probe.
07/03/14
20140182382
Ultrasonic transducer assembly and system for monitoring structural integrity
In an ultrasonic transducer assembly, a conformable ultrasonic transducer has a piezoelectric layer and electrodes able to conform to curved surfaces, and a clamp for pressing the transducer into ultrasonic contact with a curved surface. Conformability is ensured with a thin, porous piezoelectric layer and suitable electrical conductors and insulators.
07/03/14
20140182378
Energy harvester powered accelerometer
A sensor may include a base, a resonator centered over the base, and an accelerometer disposed in a base of the resonator. The resonator may be configured to harvest energy from vibratory motion of a host device and includes a slot disposed on a center rectangular plane of the sensor.
07/03/14
20140182100
Pre-polarized film flex circuit based ultrasonic transducer
The present disclosure involves a method and apparatus for making a compact and flexible ultrasonic transducer assembly that works by using existing flex circuit fabrication processes, modified flex circuit fabrication processes, and pre-polled metalized piezoelectric film, and an asic to create a sub 1 mm ultrasonic transducer hybrid assembly.. .
06/26/14
20140180392
Stent for restenosis prevention
A device for use in reducing or preventing the occurrence of restenosis following procedures such as ptca, in which a stent is used to hold a bodily lumen open. The device comprises a two layered stent, one lying within the other.
06/26/14
20140180376
Intrinsic transduction system
An intrinsic transduction system for stimulating portions of the body. The output of the transducer is a stimulating and/or nerve regenerating frequency having components falling within predetermined frequency band limits so as to optimally excite touch nerve fibers relative to nociceptor or pain receptor nerve fibers.
06/26/14
20140180128
Focused rotational ivus transducer using single crystal composite material
An ultrasound transducer for use in intravascular ultrasound (ivus) imaging systems including a single crystal composite (scc) layer is provided. The transducer has a front electrode on a side of the scc layer; and a back electrode on the opposite side of the scc layer.
06/26/14
20140180117
Preparation and application of a piezoelectric film for an ultrasound transducer
The present disclosure involves a method of fabricating an ultrasound transducer. A piezoelectric polymer is mixed into a solution containing a first chemical and a second chemical to form a viscous film.
06/26/14
20140180103
Dual-mode piezocomposite ultrasonic transducer
A compact, high power, dual mode, emitting and receiving ultrasound transducer and method for applying ultrasonic energy within a living subject and for monitoring the effects it induces in tissue comprises a set of piezoelectric polymeric transducer elements and a set of piezoelectric ceramic elements, bonded together. The polymeric transducer elements have electrodes enabling their use for low power diagnostic imaging interrogation of the tissue and the ceramic transducer elements have electrodes enabling their use for high power therapy applications..
06/26/14
20140180090
Ultrasound diagnostic apparatus, tissue elasticity measurement method, and recording medium
When tissue elasticity of a subject is measured, an ultrasound diagnostic apparatus sets a sound velocity for each of segment regions established by dividing the subject, processes reception signals output by a piezoelectric element array based on the set sound velocities, and performs tissue elasticity measurement based on the reception signals processed based on the set sound velocities. Owing to this configuration, when tissue elasticity of a subject is measured, the ultrasound diagnostic apparatus prevents the accuracy of tissue elasticity measurement from deteriorating due to image distortions..
06/26/14
20140178574
Method and apparatus for focusing miniature ultrasound transducers
The present disclosure provides methods and apparatus of fabricating a transducer for use in ultrasound imaging. A substrate is provided.
06/26/14
20140178290
Bismuth iron oxide powder, manufacturing method for the bismuth iron oxide powder, dielectric ceramics, piezoelectric element, liquid discharge head, and ultrasonic motor
Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (a) grains including a bismuth iron oxide having a perovskite-type crystal structure; (b) grains including a bismuth iron oxide having a crystal structure classified to a space group pbam; and (c) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group i23.
06/26/14
20140178220
Piezoelectric micro-blower
A piezoelectric micro-blower includes an inner case to which a peripheral portion of a vibrating plate including a piezoelectric element is fixed such that a blower chamber is defined between the inner case and the vibrating plate and an outer case arranged to cover an outer periphery of the inner case with a gap therebetween. The inner case is elastically retained in the outer case by a plurality of connecting portions.
06/26/14
20140176646
Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and method for manufacturing piezoelectric element
A flow channel substrate has pressure chambers, and the pressure chambers communicate with nozzle openings for ejecting liquid. Each of piezoelectric elements on the flow channel substrate has a piezoelectric layer, a pair of electrodes, and a wiring layer coupled to the electrodes.
06/26/14
20140176645
Piezoelectric actuator, inkjet print head assembly, and method of manufacturing the piezoelectric actuator and the inkjet print head assembly
A piezoelectric actuator includes upper and lower electrodes providing driving voltages and a piezoelectric film formed between the upper and lower electrodes and providing a driving force to ink in a plurality of pressure chambers formed on an inkjet print head, respectively. The piezoelectric film may include a plurality of basin parts individually formed on respective tops of the plurality of pressure chambers and a large-area part connected to the plurality of basin parts, respectively, at one ends of the plurality of basin parts and formed as a single body.
06/26/14
20140176507
Piezo-powered sensor card and method therefor
An electronic sensor device, powered by a piezoelectric source and including an electronic element, is provided. The device may be used to test for the presence of substance such as a gas, a liquid, a chemical substance or a biological substance, etc.
06/26/14
20140176261
Acoustic resonator device with at least one air-ring and frame
An acoustic resonator device includes a bottom electrode disposed on a substrate over an air cavity, a piezoelectric layer disposed on the bottom electrode, and a top electrode disposed on the piezoelectric layer, where an overlap between the top electrode, the piezoelectric layer and the bottom electrode over the air cavity defines a main membrane region. The acoustic resonator device further includes at least one air-ring defining a boundary of the main membrane region, and at least one first frame formed between the bottom electrode and the piezoelectric layer or formed between the substrate and the bottom electrode, and a second frame formed between the piezoelectric layer and the top electrode..
06/26/14
20140176257
Elastic-wave filter device
An elastic-wave filter device includes a reception filter section including a longitudinally coupled resonator-type elastic-wave filter section that has a balanced-to-unbalanced conversion function and has improved common-mode isolation characteristics. Among idt electrodes of a filter section, each of the other comb-shaped electrode of a first idt electrode including a pair of comb-shaped electrodes, one of which is connected to a first balanced-signal terminal, and the other comb-shaped electrode of a second idt electrode including a pair of comb-shaped electrodes, one of which is connected to a second balanced-signal terminal, is connected to one of ground electrodes that are provided on a piezoelectric substrate.
06/26/14
20140175951
Piezoelectric device
A piezoelectric device includes a nanoimprinted film which is made from a ferroelectric polymer having a first conformation state and coated on a substrate. The ferroelectric polymer is heated at a temperature between a curie point (tc) and a melting point (tm) of the ferroelectric polymer to cause a change in conformation of the ferroelectric polymer from the first conformation state to a second conformation state, and is then subjected to a nanoimprinting process at an imprinting temperature lower than tc to cause a change in conformation of the ferroelectric polymer from the second conformation state to a third conformation state that is different from the first conformation state, thereby obtaining the nanoimprinted film..
06/26/14
20140175950
Acoustic resonator comprising aluminum scandium nitride and temperature compensation feature
An acoustic resonator structure comprises a first electrode disposed on a substrate, a piezoelectric layer disposed on the first electrode and comprising aluminum scandium nitride, a second electrode disposed on the piezoelectric layer, and a temperature compensation feature having a temperature coefficient offsetting at least a portion of a temperature coefficient of the piezoelectric layer, the first electrode, and the second electrode.. .
06/26/14
20140175949
Piezoelectric bulk wave device, and method of manufacturing the piezoelectric bulk wave device
A piezoelectric bulk wave device that includes a piezoelectric thin plate that is made of litao3, and first and second electrodes that are provided in contact with the piezoelectric thin plate. The piezoelectric bulk wave device utilizes the thickness shear mode of the piezoelectric thin plate made of litao3.
06/26/14
20140175948
Piezoelectric actuator
A piezoelectric fan includes a vibration sheet, piezoelectric elements, a reinforcing sheet bonded to at least one of principal surfaces of the piezoelectric element, a reinforcing sheet bonded to at least one of principal surfaces of the piezoelectric element, and a fixing sheet. The vibration sheet is fixed to the inside of an electronic device by the fixing sheet disposed at one end of the vibration sheet.
06/26/14
20140175947
Piezoelectric vibration module
Disclosed herein is a piezoelectric vibration module including: a piezoelectric element repeatedly extended and compressed according to application of external power to generate vibration force; a vibration plate having the piezoelectric element coupled to one surface thereof and repeatedly extended and compressed integrally with the piezoelectric element to transfer the vibration force of the piezoelectric element to an external component; a weight body having a central portion coupled to the other side of the vibration plate in order to increase the vibration force of the piezoelectric element; and a coupling member fixedly coupling the central portion of the weight body and the vibration plate to each other.. .
06/26/14
20140175945
Piezoelectric bulk wave device, and method of manufacturing the piezoelectric bulk wave device
A piezoelectric bulk wave device that includes a piezoelectric thin plate that is made of litao3, and first and second electrodes that are provided in contact with the piezoelectric thin plate. The piezoelectric bulk wave device utilizes the thickness shear mode of the piezoelectric thin plate made of litao3.
06/26/14
20140174908
Scandium-aluminum alloy sputtering targets
A sputtering target comprises an alloy of scandium and aluminum, wherein the alloy has a concentration of 3-10 at % scandium and 90-97 at % aluminum. The sputtering target can be used to produce a piezoelectric layer for an apparatus such as an acoustic resonator..
06/26/14
20140174496
Hybrid generator using thermoelectric generation and piezoelectric generation
A hybrid generator using a thermoelectric generation and a piezoelectric generation are provided. The hybrid generator includes first and second insulating layers spaced apart from each other; a thermoelectric structure disposed between the first and second insulating layers; a first electrode disposed on the second insulating layer; a piezoelectric structure disposed on the first electrode; a third insulating layer disposed on the piezoelectric structure; and a second electrode disposed on the third insulating layer..
06/26/14
20140174179
Inertial sensor and method of manufacturing the same
Disclosed herein is an inertial sensor, including: a structural part for an accelerator sensor disposed on one surface, centered on a common post; and a structural part for an angular velocity sensor disposed on the other surface, centered on the common post, wherein a piezoresistor of the structural part for the accelerator sensor and a piezoelectric material of the structural part for the angular velocity sensor are formed on different surfaces.. .
06/26/14
20140173862
Method for manufacturing composite piezoelectric substrate
In a method for manufacturing a composite piezoelectric substrate, a piezoelectric substrate and a supporting substrate are prepared, ions are implanted from a surface of the piezoelectric substrate to form a defective layer at a predetermined depth, impurities adhered to the surface of the piezoelectric substrate in which the defective layer is formed and/or a surface of the supporting substrate are removed to directly expose the constituent atoms of the surfaces and activate the surfaces, the supporting substrate is bonded to the piezoelectric substrate to form a bonded substrate body, the bonded substrate body is separated at the defective layer so that a separation layer between the surface of the piezoelectric substrate and the defective layer is separated from the piezoelectric substrate and bonded to the supporting substrate to form a composite piezoelectric substrate, and the surface of the separation layer of the composite piezoelectric substrate is smoothed.. .
06/19/14
20140170624
Device and method to produce gravitomagnetic induction, mass spin-valve or gravitational rectifier
The invention pertains to a head-disk assembly device, “mass spin-valve” or “gravitational rectifier” and method of producing gravitomagnetic induction utilizing nano-features; nano-bumps and nano-pits; fabricated on the surface of a hard disk. The device includes a computer hard disk; a piezoelectric glide head and/or a gmr read head; a typical hard drive's electronics; wherein, defects are fabricated on the said disk using a focused ion beam (fib) by depositing requisite number of nanobumps of specified height, and etching equal number of nanopits of specified depth a few mils or mm apart on a pre-decided radius.
06/19/14
20140169996
Piezoelectric actuator
A piezoelectric fan includes a vibration sheet, piezoelectric elements, a reinforcing sheet having one principal surface bonded to the vibration sheet and the other principal surface bonded to the piezoelectric element, and a fixing sheet. The vibration sheet is fixed to the inside of an electronic device by the fixing sheet which is disposed at one end of the vibration sheet.
06/19/14
20140169592
Actuator systems for oral-based appliances
Actuator systems for oral-based appliances utilizing transducers which are attached, adhered, or otherwise embedded into or upon a dental or oral appliance to form a hearing aid assembly. Such oral appliances may be a custom-made device which receives incoming sounds and transmits the processed sounds via a vibrating transducer element.
06/19/14
20140169078
Piezoelectronic memory
A memory element includes a first piezotronic transistor coupled to a second piezotronic transistor; the first and second piezotronic transistors each comprising a piezoelectric (pe) material and a piezoresistive (pr) material, wherein an electrical resistance of the pr material is dependent upon an applied voltage across the pe material by way of an applied pressure to the pr material by the pe material.. .
06/19/14
20140169067
Resistance memory device and memory apparatus and data processing system
A resistance memory device and a memory apparatus and data processing apparatus having the same are provided. The resistance memory device includes a pair of electrode layers and a variable resistance layer interposed between the pair of electrode layers.


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Piezoelectric topics: Piezoelectric, Piezoresistive Material, Wave Device, Acoustic Wave, Electronic Device, Attenuation, Control Unit

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