|| List of recent Piezo-related patents
|Method and device for controlling a scanning probe microscope|
The present invention relates to a method for controlling a scanning probe microscope having a probe (2) with a tip (21) for interacting with a sample (4), and a nanoscanner (1) for retaining the sample (4) or the probe (2), comprising the steps of monitoring the extension of the piezo element (1) along a first direction (r) along which the tip (21) is moved towards the sample (4), and adjusting the level of the probe (2) along the first direction (r) by means of an additional actuator (3), when the nanoscanner (1) exhibits an extension below or above a threshold value. The invention further relates to a device (100) for controlling a scanning probe microscope..
|Electronic device and system for controlling applications implementing at least one piezoelectric, electrostrictive or magnetostrictive transducer|
The electronic device (1) for controlling comprises an electric power generator (10) suitable for supplying at least one piezoelectric, electrostrictive or magnetostrictive transducer (2), with a control signal (s), electronic controlling means (11) capable of automatically controlling the electric power generator by using a control macro-function (m), and an electronic memory (112) in which the following are stored: a first family (a) of control functions comprising one or a plurality of different elementary control functions (an), making it possible to adjust the amplitude of the control signal (s), a second family (t) of control functions comprising one or a plurality of different elementary control functions (tn), making it possible to adjust the duration of the control signal (s), a third family (c) of control functions comprising a plurality of different elementary control functions (cn), making it possible to adjust the control signal (s) cycle, at least said control macro-function (m), which is made up of the assembly of at least three elementary control functions chosen respectively from among the three families of control functions (a, t, c) recorded in the memory.. .
|Self-oscillating loop based piezoelectric power converter|
The present invention relates to a piezoelectric power converter comprising an input driver electrically coupled directly to an input or primary electrode of the piezoelectric transformer without any intervening series or parallel inductor. A feedback loop is operatively coupled between an output voltage of the piezoelectric transformer and the input driver to provide a self-oscillation loop around a primary section of the piezoelectric transformer oscillating at an excitation frequency.
|Piezoelectric power converter with bi-directional power transfer|
The present invention relates to a bi-directional piezoelectric power converter comprising a piezoelectric transformer. The piezoelectric transformer comprises an input electrode electrically coupled to a primary section of the piezoelectric transformer and an output electrode electrically coupled to an output section of the piezoelectric transformer to provide a transformer output signal.
|Micro-lens for high resolution microscopy|
A method and apparatus for nanoscopy comprising a salt microlens. The microlens-based nanoscope comprises a conventional microscope, a microlens, and a xyz piezoelectric stage is shown (see fig.
|Cantilevered micro-valve and inkjet printer using said valve|
A micro-valve includes an orifice plate including an orifice and a cantilevered beam coupled in spaced relation to the orifice plate and moveable between positions where the orifice is closed and opened by the cantilevered beam. The cantilevered beam includes one or more piezoelectric layers that facilitate bending of the cantilevered beam in response to the application of one or more electrical signals to the one or more piezoelectric layers.
|Method for manufacturing piezoelectric actuator|
A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.. .
A filter device includes a piezoelectric substrate, an idt arranged on a major surface of the piezoelectric substrate to define a surface acoustic wave resonator, a wiring electrode that is electrically connected to the idt, and an acoustic member located on a major surface of the piezoelectric substrate near or adjacent to the idt and that has an acoustic impedance different from that of the piezoelectric substrate. The wiring electrode that is to be disposed in the vicinity of the idt is located on the acoustic member..
|Elastic wave device|
An elastic wave device includes a resonator and an inductor. One end of the inductor is connected to the resonator, and the other end of the inductor is connected to a ground electrode or a signal electrode.
|Nanoporous piezoelectric polymer films for mechanical energy harvesting|
Piezoelectric materials based on nanoporous polymer foams are provided. Also provided are nanogenerators incorporating the piezoelectric materials, piezoelectric energy harvesters incorporating the nanogenerators and methods of making and using the same.
|Piezoelectric device and method for manufacturing same|
A resin is provided so as to cover four side faces of a piezoelectric multilayer body integrally and thus is effectively prevented from peeling from the piezoelectric multilayer body, whereby high adhesion is attained between the piezoelectric multilayer body and the resin. At the same time, the resin covers dicing surfaces in the side faces of the piezoelectric multilayer body, thereby effectively restraining the piezoelectric body and the electrodes from producing particles..
|Piezoelectric actuation device|
This invention relates to a piezoelectric actuation device and more particularly but not exclusively, to a piezoelectric actuation device with three piezoelectric actuator sets. The device includes a first clamp arrangement being displaceable between an engaged position and a disengaged position and a second clamp arrangement being displaceable between an engaged position and a disengaged position.
|Vibration generating apparatus|
There is provided a vibration generating apparatus including: a piezoelectric element fixedly attached to a vibration transfer member and expanded and contracted in a direction from an inner surface thereof toward an outer surface thereof or in a direction from the outer surface thereof toward the inner surface thereof when power is applied thereto; and a vibration element connected to the piezoelectric element to vibrate.. .
Disclosed is piezoelectric vibrator including a piezoelectric vibrator unit. The piezoelectric vibrator has a vibrating portion, a mass attached on the vibrating portion and having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion, and a holder having a stopping portion disposed between the extending portion of the mass and the vibrating portion.
A bulk acoustic wave resonator structure that isolates the core resonator from both environmental effects and aging effects. The structure has a piezoelectric layer at least partially disposed between two electrodes.
|Vibration limit switch|
A vibration limit switch with a membrane, which can be set into oscillation, and a drive unit for setting the membrane into oscillation and/or for detecting an oscillation of the membrane, with the drive unit comprising at least one electromagnetic drive and one piezo-electric drive.. .
|Electronic component element and composite module including the same|
An electronic component element includes a piezoelectric substrate and a comb-shaped electrode located on one principal surface of the piezoelectric substrate. A support layer is arranged around the comb-shaped electrode.
A bearing includes at least an inner ring (12), an outer ring (11), and rolling bodies arranged between the inner and outer rings, one of the rings being designed to turn and the fixed, and one of the rings (11) including an inducing element (30) is designed to generate an inducing electromagnetic field, the other of the rings (12) including an electrical circuit (25) in which an induced current is generated when one of the rings turns in relation to the other of the rings, and when the inducing element (30) generates an inducing electromagnetic field, wherein the inducing element designed to generate an inducing electromagnetic field includes a module having a piezoelectric effect and/or a module having a thermoelectric effect (35).. .
There is provided a displacement sensor which can precisely detect the amount of displacement given by an operator. A touch sensor which is a type of the displacement sensor has a piezoelectric element, a voltage converting unit and a detecting unit.
|Identification of environmental sensor changes and temperature sensor changes with a two layer bulk acoustic wave resonator|
Provided is a method for measurement of a change in environment at a sensor. The sensor has: a first layer formed of a piezoelectric material; a second layer formed adjacent the first layer and acoustically coupled with the first layer; and electrodes disposed to apply a driving signal to the first layer to generate bulk acoustic waves.
|Ultrasonic measurement system|
An ultrasonic transducer 101 includes a piezoelectric element 108. A high-temperature mi cable 102 contains strands 110a, 110b connected to the ultrasonic transducer 101, and further includes a metallic sheath 112.
|Force sensing sheet|
A support apparatus includes a force sensing array positioned thereon that includes multiple layers of material that are arranged to define an elastically stretchable sensing sheet. The sensing sheet may be placed underneath a patient to detect interface forces or pressures between the patient and the support structure that the patient is positioned on.
|Apparatus and method for adapting a piezoelectric respiratory sensing belt to a respiratory inductance plethysmography polysomnograph|
Circuits for rendering piezo-based respiratory belts compatible with polysomnograph (psg) machines designed for use with respiratory induction belts (rips) comprise an instrumentation amplifier adapted to be connected to a piezoelectric transducer and providing an ac output signal to a low-pass filter. In a first embodiment, the low-pass filter output is applied to an input of a microcontroller's a to d converter and the resulting digitized samples are used to vary the resistance of a digital potentiometer whose wiper terminal is coupled in series with an inductor so as to emulate the presence of a rip belt to the psg machine.
|Transducer with piezoelectric, conductive and dielectric membrane|
This disclosure provides systems, methods and apparatus for microspeaker devices. In one aspect, a microspeaker element may include a deformable dielectric membrane that spans a speaker cavity.
Disclosed is a touch panel. The touch panel includes a first substrate; a second substrate spaced apart from the first substrate; an electrode on at least one of the first substrate and the second substrate for detecting a position; and a piezoelectric part having an elasticity which varies depending on an electric field induced by the electrode, wherein the piezoelectric part includes a base and particles distributed into the base, and the base includes a polymer material having elasticity..
|Transparent vibrating touch interface|
The the invention relates to a touch interface comprising a contact surface and means for vibrating the contact surface, said means being provided to generate standing waves in said surface. The contact surface includes at least one transparent portion forming a surface for seeing through the touch interface, and the vibration generating means include at least one rigid piezoelectric layer that is rigidly connected to the contact surface and disposed on the periphery of the transparent portion.
|Imaging apparatus and method comprising imager and optics actuator means|
An imaging device and method of providing an increased depth-of-field of an electronic image. The image sensor and the optical lens assembly are selectively repositionable along the optical axis of the lens using electronic actuator elements such as piezo-electric actuator elements, a plurality of images of a scene are captured while the image sensor, the optical lens assembly, or both are positioned at predetermined locations along the optical axis.
|Printhead waveform voltage amplifier|
A waveform amplifier for a piezoelectric liquid ejection element. The amplifier provides an amplified waveform to the liquid ejection element..
|Haptic feedback using composite piezoelectric actuator|
A haptic tape includes a composite piezoelectric layer connected between a first electrode layer and a second electrode layer. The composite piezoelectric layer has a plurality of piezoelectric rods arranged in a polymer matrix.
|Piezoelectric material, piezoelectric member piezoelectric element, and pressure sensor|
The present invention has an object to provide a piezoelectric material that endures high temperatures, the resources of raw materials of which are abundant, and that is stably suppliable. Disclosed is a piezoelectric element, including: a piezoelectric member having a surface for receiving external stress and a side surface that is perpendicular to the surface for receiving external stress; and at least one pair of a first electrode and a second electrode that are placed on the side surface, the first electrode being provided so as to separate from the second electrode.
A piezoelectric resonator including a base part, a first support part fixed to the base part, a beam part fixed to the first support part, a weight part fixed to the beam part, a drive unit provided on the beam part, and an adjusting magnet movable on a main surface of the base part. Furthermore, the weight part is formed of a magnet or a magnetic body, and the beam part extends in a direction along the main surface of the base part.
|Semiconductor device for electron emission in a vacuum|
A semiconductor device for electron emission in a vacuum comprises a stack of two or more semi-conductor layers of n and p type according to sequence n/(p)/n forming a juxtaposition of two head-to-tail np junctions, in materials belonging to the iii-n family, two adjacent layers forming an interface. The semiconductor materials of the layers of the stack close to the vacuum, where the electrons reach a high energy, have a band gap eg>c/2, where c is the electron affinity of the semiconductor material, the p-type semiconductor layer being obtained partially or completely, by doping impurities of acceptor type or by piezoelectric effect to exhibit a negative fixed charge in any interface between the layers, a positive bias potential applied to the stack supplying, to a fraction of electrons circulating in the stack, the energy needed for emission in the vacuum by an emissive zone of an output layer..
|Nanomanipulation coupled nanospray mass spectrometry (nms)|
A coupled nanomanipulation and nanospray mass spectrometry (nms) system for single cell, single organelle, and ultra-trace molecular analysis is disclosed herein. The system primarily comprises a bio-workstation coupled to a nms.
|System and method for determining tire uniformity parameters from piezoelectric measurements in the tire counter-deflection zone|
Systems and methods of determining tire uniformity parameters from piezoelectric tire sensor output signals obtained while operating in the counter-deflection zone include establishing a transfer function that relates a tire uniformity parameter to the piezoelectric output signals. Piezoelectric output signals from two or more piezoelectric tire sensors are then monitored to measure the voltage change from each piezoelectric tire sensor while it is operating in the counter-deflection zone.
|Encapsulated piezoelectric valve|
An actuator assembly includes a housing and an actuator arranged within the housing, the actuator including a first part and a second part movable relative to the first part. An insulating material is disposed within the housing, the insulating material encapsulating at least the movable part of the actuator..
|Passive physiological monitoring (p2m) system|
Passive physiological monitoring apparatus and method has a sensor for sensing physiological phenomenon. The sensor is a piezoelectric film of polyvinylidene fluoride.
|Medical tool for reduced penetration force with feedback means|
A medical device for reducing the force necessary to penetrate living being tissue using a variety of reciprocating motion actuators, including piezoelectric, voice coil, solenoids, pneumatics or fluidics. The reciprocating actuator drives a penetrating member through the tissue at a reduced force while the device detects the passage of the penetrating member through the tissue.
|Electronic brachytherapy radiation application apparatus comprising a piezoelectrically powered x-ray source|
The invention relates to a radiation application apparatus for applying radiation at a location within an object. The radiation application apparatus comprises a transforming unit (2) for being arranged within the object at the location and for transforming ultrasound energy to electrical energy, and a radiation source (4) for being arranged within the object and for generating radiation (5) to be applied at the location within the object, wherein the radiation source (4) is driven by the electrical energy.