piezoelectric

Loading (stressing) a bone produces in it a small electrical field called piezoelectric force, that needed to stimulate new bone formation.

The piezoelectric device, when in use, agitates the surface of the water and the water can be evaporated at a low energy cost.

Piezoelectric energy harvesting has become one of research hotspot due to its advantage of low cost, simple device, good portability, etc.

Over the last few years, however, scientists have made dramatic advances in getting electricity out of piezoelectric devices.

The result of dynamic detection indicates that this method is able to detect the resonant frequency of the piezoelectric transducer.

One surface of the metal substrate is at least attached with more than two layers of piezoelectric ceramic slices.

By sticking PZT onto the surface of the structure to be tested and employing piezoelectric impedance technology.

At the heart of our array design philosophy is our custom piezoelectric technology and our solid acoustic materials knowledge.

In this paper, the local buckling near the surface of piezoelectric laminated shells under electric and thermal loads are investigated.

Piezoelectric buzzer sound output is usually converted into electrical oscillations.

Hysteresis is one of the serious defects of piezoelectric ceramics which restraints the precision of an open loop control system.

The smart beams, with cracks driven by a pair of distributed bi-piezoelectric actuators, were analyzed dynamically.

This product specification is applied to the piezoelectric buzzer used for sounder in alarm systems.

It was concluded that the heat radiation system generally include heat sink, radiator, heat radiation fan, piezoelectric pump etc.

The differential equations of piezoelectric radial motion have been derived in terms of radial displacement and electric potential.

It was shown that piezoelectric sensors could be widely and effectively used in researches and practices of geotechnical engineering.

Opening displacement of a penny-shaped crack in an isotropic piezoelectric body subjected to arbitrary point loadings.

This kind of phenomenon is called go against piezoelectric effect, also call electrostriction effect.

A systematic study was performed for a piezoelectric layer with a central penny-shaped crack bonded to an elastic layer.

This paper established the overall design scheme for the system after analyzing the impedance characteristics of piezoelectric transducer.

Piezoelectric devices are used for power generation from mechanical strain, particularly in power harvesting .

The piezoelectric elements are in the form of discrete particles, piezoelectric fibers, filaments, transducers, and actuators.

In recent studies, cymbal transducer is an important research direction of piezoelectric energy harvesting.

A piezoelectric acceleration sensor was used to extract vibration signals and reflect the mechanical status of the circuit breaker.

The working principle of the ultrasonic transducer of piezoelectric ceramics was introduced as well.

The ultrasonic generator comprises a piezoelectric energy exchanger, a conical amplitude transformer, a mounting seat and a saw blade joint.

Like the piezoelectric ink jet printing technology, a series of nozzles arranged in together, you will get a larger printing range.

One or more interdigital transducers and a passivation layer can be formed upon the piezoelectric substrate.

The particular advantages of piezoelectric actuators are discussed in detail as well as the configuration sorts and application field.

Theory of sinusoidal pressure produced by the resonance of the liquid in hydraulic pipe excited by piezoelectric ceramics is presented.

The invention relates to a multi film piezoelectric element in harddisk micro-actuator and its preparing method.

A fast tool servo mechanism with a piezoelectric actuator has attracted more attention for its excellent machining way and high resolution.

Simply flanking the piezoelectric layer with thin concentric layers of metal would not work because metals tend to have a low viscosity.

The dance floor takes advantage of the piezoelectric effect: certain materials, when squeezed, develop a charge and produce electricity.

This study investigates the design, fabrication and performance test of a thin disc piezoelectric transformer (PT).

Finally, a control chip circuit for half-bridge inverter with a cascading piezoelectric transformer is planned and designed.

Quartz has properties similar to sapphire, but considerably higher piezoelectric output, so it's rarely used in electrometer circuits.

A new piezoelectric sensor design for a clamped-clamped plate is presented to measure its amplitudes of the first three radiation modes.

Objective Recent research of piezoelectric quartz crystal(PQC) sensor and its applications in biomedicine were summarized in this review.

The results expatiate that eigenfrequency influences of polar directions of piezoelectric ceramics can be neglected.

It was found that the powder synthesized from sol-gel method can decrease sinter temperature and increase piezoelectric properties.

The control always tracks piezoelectric transformer resonance frequency, independently of process variation and temperature variation.

Barium titanate (BT) is a very important electronic ceramic materials with excellent dielectric and piezoelectric properties.

The conclusions have theoretical significance for optimization design and vibration control in periodic piezoelectric composite structures.

And shape memory alloy actuator, magnetic damper or piezoelectric actuator is used to actively control vibration of a rotor system.

A novel piezoelectric micro gyroscope is designed and fabricated on silicon crystal, with an IC compatible technology.

The wafer is a piezoelectric resonator, expanding and contracting in response to electrical voltages at a precise, extremely high frequency.

Piezoelectric wave generator contains more than eight groups of piezoelectric actuators and displacement amplifiers with flexible hinges.

The adaptive beam is composed of piezoelectric ceramic sensors, actuators, and a flexible beam.

This paper is concerned with the behavior of a screw dislocation in a half-plane piezoelectric composite medium.

In this paper, the optimization of semiactive shunted circuit in the vibration control for a piezoelectric beam is studied.

The influences of the cable wiring capacitances on the properties of the piezoelectric sensor with different measuring circuit are analyzed.

This kind of effect is called piezoelectric effect.

In practice, it may be quite difficult to distinguish stored charge effects (in insulators) from piezoelectric effects.

The main factors that influence the quality of PZT piezoelectric ceramics include aggregation of powders, stoichiometry and aging etc.

Piezoelectric or stored charge effects: the creation of charge unbalances (and thus current flow or voltage shift) due to mechanical stress.

A difference of mechanical strains between the substrate and the piezoelectric layer causes the final manufactured actuator to curve.

A type of inchworm system utilized piezoelectric ceramics embedded in a flexible frame as driving and clamping units was developed.

Mechanical model is established for collinear multiple unequal cracks in transversely isotropic piezoelectric material.

Piezoelectric generators can be placed on sidewalks or in car lanes to transform the mechanical power to electrical power.

Because of the positive piezoelectric effect and inverse piezoelectric effect, piezoelectric materials can be both a sensor and an actuator.

Piezoelectric ceramics vibrators are widely used in engineering practice.

We do experiment and test to the finite element analysis software for the power generation performance of piezoelectric vibrator.

A number of experiments on stepping model linear piezoelectric actuator prove practical signification of actuator.

This thesis focuses on the technique research of adaptive vibration-isolation for vehicle electronic equipment by piezoelectric materials.

This paper presents the vibration characteristics of the radial mode in spherical piezoelectric transducers.

The governing equations were derived for laminated plates incorporating shear-mode piezoelectric actuators from Hamilton's principle.

Slightly stable systems include piezoelectric ceramic driving and implementation of amplification.

The end-effecter magnified the displacement created by piezoelectric(PZT) actuator by means of the leverage.

The charge potential is then applied to a second electrode (113) of the piezoelectric element (102).

A sampling system for micro speckles was designed and the hysteresis curve of displacement induced by a piezoelectric ceramic was measured.

The relationship between elastic constants and engineering constants of piezoelectric materials was analyzed.

COMPONENTS FOR ELECTRONIC EQUIPMENT. PIEZOELECTRIC DEVICES. CRYSTAL HOLDERS.

The groundwork is established for implementing space-sharing piezoelectric self-sensing in vibration reduction and motion control.

Ring-shaped lead zirconate titanate (PZT) piezoelectric vibrators were subjected to non-uniform mechanical stress applied by bolt clamping.

It contains tiny piezoelectric structures that are made by painstakingly micro-machining a brittle block of ceramic material.

While analysing the controls, different characteristics of piezoelectric devices are also discussed.

The improvement of piezoelectric properties was obtained, and the frequency constant of the ceramics was changed obviously.

A piezoelectric micro-jet was presented, which can precisely provide a liquid sample in an order of nano-liter.

Finally I got the spare piezoelectric transducers and finished some simple high-impedance signal amplifiers.

However, 50% of the piezoelectric inkjet cards and membership cards making machine use solvent inks, the environmental pollution problems.

The flexural vibration deformation and vibration radiation noise of piezoelectric vibrator were researched.

The optimal location and size of the piezoelectric actuators in vibration control of smart beams are optimized.

A piezoelectric fuze transducer with high transient and omnidirectional characteristics is developed.

The interaction between piezoelectric screw dislocation and circular crack under remote uniform heat flux was investigated.

The transducer is made of piezoelectric ceramic material, it is different from physical vibration and motor vibration.

Using sensitivity analysis, a design method of optimal piezoelectric actuator placement in composite adaptive plate is investigated.

The dielectric and piezoelectric responses of single-domain PT and BT are very sensitive to the phase transition.

The paper studies the sinusoidal control of micro displacement worktable, which based piezoelectric actuator and flexure hinge.

The quaternary system piezoelectric ceramic with good properties and suitable for stationary wave ultrasonic motor is prepared.

The quaternary system piezoelectric ceramic with good properties and suitable for stationary wave ultrasonic motor is prepared.

A natural or synthetic crystalline material having piezoelectric or semiconducting properties.

The piezoelectric quartz crystal DNA biosensor is a fast diagnostic tool with easy operation for detecting HBV in clinical laboratories.

Glass and ceramics also have high volume resistivity, but poor surface properties at high humidity and often-poor piezoelectric properties.

The device employs piezoelectric, drop - on - demand inkjet technology with water - based pigment inks that resist fading and smearing.

Presents an experimental research on the cutting active vibration control system using a piezoelectric patch actuator.

The piezoelectric effect manifests itself as a transfer of electric to mechanical energy and vice-versa.

This paper summarized the applications of piezoelectric materials on shape control and vibration control of smart structures.

The basic idea of piezoelectric admittance technique for structural health monitoring is presented.

The principle of the novel piezoelectric actuator and the scanner were described, and the frequency response was measured.

An acoustic wave sensor apparatus is disclosed, which generally includes a piezoelectric substrate having a surface thereon.

Active vibration control for piezoelectric intelligent structures is an important task in the field of engineering structural research.

The effect of the polarization field on the piezoelectric and dielectric properties of PVDF films was also studied.

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As results, the actuation force of piezoelectric actuator is estimated excessively when the effect of the bonding layer is not considered.

The next step is to take apart the to get the piezoelectric ignitor.

This trend can be attributed to stronger carrier localizations and larger piezoelectric fields in increasing well width.

The impact of voltage, number of piezoelectric and damp on scalpel vibration amplitude is analyzed.

the spring shim can protect the piezoelectric crystals for reducing damage to the piezoelectric crystals due to installation errors.

Ultrasonic motor is a use of the inverse piezoelectric effect of piezoelectric ceramic work of new concepts, new principles of motors.

This paper introduces a miniature electric field sensor (EFS) using dual piezoelectric ceramics bars as driving structure.

sWith piezoelectric actuators as control elements, the basic equations of shape control for adaptive truss was formulated.

NON DESTRUCTIVE TESTING. ACOUSTIC EMISSION. COUPLING OF PIEZOELECTRIC SENSORS.

The report set off a study of KNN-based lead-free piezoelectric ceramic materials boom.

The base of dynamical equations of piezoelectric intelligent plate were formulated using finite element method.

The sweeping sine singles from Frequency Spectrum Analyzer actuated the specimen by piezoelectric ceramic.

Electrotechnical vocabulary. Chapter 561 : piezoelectric devices for frequency control and selection.

A piezoelectric paddle detects the generated vortex and analyses the values with the integrated electronic.

Through analysis of experiment data, the micro-displacement machine has the hysteresis and creepage phenomenon as piezoelectric element's.

Several basic views about optimizing the size and position of the piezoelectric flat are given.

The piezoelectric actuators applied voltages can enhance the structural damp of the solar array.

The linear PID controller may not perform well in the case where nonlinear hysteresis is found in the piezoelectric actuator.

A capacitor, moving-coil, piezoelectric, electromagnetic, and the carbon-type semiconductor.

For decades, scientists have pumped electricity into piezoelectric materials for use in environmental sensors, speakers and other devices.

The piezoelectric pressure sensor, vacuum device and heating resistance are used in the experiment.

Poly(vinylidene fluoride)(PVDF) is the fluoroplastics which has the best properties of piezoelectric material in practical applications.

This paper uses piezoelectric ceramics as actuators and sensors to suppress the vibration of flexible manipulator.

he performance of piezoelectric driven feeder system is discussed and analyzed in this thesis, especially the vibration and the feed rate.

This paper discussed the structural principle and property of digit piezoelectric quartz posture sensor.

Circuit suppresses capacitively coupled noise pickup by piezoelectric sensor and its wiring.

Application tests proved that the piezoelectric fuze met the service requirements.

Piezoelectric filters of assessed quality - Part 4 : sectional specification - Capability approval.

Because of the piezoelectric control in the system, the complex variable terms would appear in differential equations.

This article summarizes the development, construct, principle, characteristics and application of piezoelectric ceramic transformer.

Drive source, transmission-mechanism and pump body of the tradition fluid pump be made one in piezoelectric pump.

In this paper the characteristics and applications of various piezoelectric actuator are analyzed.

By heating or piezoelectric crystals took the new number into the instantaneous pressure.

Piezoelectric fiber composites have wide application in engineering.

Piezo Actuators are key components of piezoelectric fuel injection systems in diesel and gasoline engines.

Active vibration control using piezoelectric materials is a focus in the engineering research field.

The effects of the size and position of the piezoelectric flat on the vibration control are studied by simu1ation experiment.

Flying Needle Manuver can produces piezoelectric effect, thus it induces extensive biological and clinical therapeutic effect.

It is beneficial to use more layers in the piezoelectric patch as the thickness of the patch is fixed.

The principle of multilayer piezoelectric power supply was analyzed, and the output voltage formulas were deduced.

The piezoelectric acceleration transducer circuit is used to collect mechanical failure signal.

Because the stator consists of elastomer and piezoelectric ceramic, degree of freedom and physical field coupling problem need to be solved.

First, the current research on the damage and fracture mechanics of piezoelectric materials is reviewed.

The article study widening band of longitudinal mode piezoelectric transducers.

Linearity of axial sensitivity of compression type piezoelectric sensor .

This structure can suppress self-heating of the piezoelectric resonator.

Hence, the nonlinear compensation is essential in the piezoelectric actuated systems.

But, compared with properties of lead piezoelectric ceramics (LPC), poor properties of LFPC restrict its applications seriously.

Objective To develop a new type of immune piezoelectric chip which can detect cardiac myoglobin in a short time.

A control strategy for piezoelectric transformer backlight inverter based on a constant frequency control and phase control is presented.

Each of the FBARs has opposed planar electrodes (112, 114) and a piezoelectric element (116) between the electrodes.

Murata gyro sensor uses a piezoelectric vibrator, act as a portion of pendulum.

In some plastics, pockets of stored charge cause the material to behave in a manner similar to piezoelectric materials.

The tuning fork is fabricated from a single wafer of monocrystalline piezoelectric quartz by chemical etching.

The research on a dynamic calibration system for piezoelectric force sensor is set forth in the paper.

carbon fiber oxidized by nitric acid worsens CFRS's piezoelectric property and rupture intensity.

These small calcite crystals have piezoelectric properties that can respond to the higher realms of light.

The piezoelectric transducer and the variable amplitude bar are designed by four-terminal network method.

The computer-controlled current piezoelectric crystals on a need basis.

Research on rod-type miniature piezoelectric ultrasonic motor was briefly reviewed in this paper.

The increase of poling voltage benefits the increase of piezoelectric properties.

In chapter two, the direct and inverse piezoelectric effect of piezoelectric materials are studied.

The location of optimization of piezoelectric actuator based on the theory of radiation modes in the active control decoupling is studied.

The present invention relates to a piezoelectric microdroplet jet device with diaphragm.

A displacement self-sensing method for piezoelectric actuator instead of displacement sensor is proposed.

Design of broadband piezoelectric ceramic receiver.

Moreover, the piezoelectric clutch is designed and constructed.

Power supply is the key component in micro piezoelectric actuator "s application. "

This paper presented a silicon-based scanning micromirror actuated by piezoelectric cantilevers using PZT.

The piezoelectric property of langasite optical crystal is introduced under the load of high repetition rate and high voltage.

Objective To discuss the effect of temperature on the frequency shift of piezoelectric quartz crystal biosensor .

Piezoelectric quartz crystal HBV DNA biosensor is easy to operate, convenient and accurate, which has a good future in clinical detection.

When E3 is an alternating field, a steady asymmetrical piezoelectric loop is observed.

In this thesis, we analyze and design the piezoelectric device by finite element simulation.

The vibration control for piezoelectric smart structure is studied.

The piezoelectric linear motor has been studied for several years abroad, and has been applied in many fields.

the circulating air , driven by piezoelectric pump , turns into fluid when it is refigured by a nozzle and jets from the nozzle.

A new type of piezoelectric pump with active electromagnetic driven valve was developed.

Piezoelectric properties of ceramic materials and components - Part 1 : terms and definitions.

The nonlinear equation of wave propagation in layered piezoelectric rod was derived according to finite deformation theory.

Lots of materials are piezoelectric: cane sugar, quartz and even dried bone creates an electrical charge when stressed.

The circuit has three relays that switch the high-voltage input to the piezoelectric motors.

A stochastic finite element was adopted to analyze the piezoelectric truss stable re.

At alternative source of energy field we are looking for energy gained from piezoelectric effect.

Piezoelectric filters of assessed quality - Part 1 : generic specification.

A piezoelectric element is appressed with the impacting object.

It is also generated by triboelectric , piezoelectric, and electrochemical effects present on the card.

This kind of phenomenon calls piezoelectric effect.

Using parallel board, a nanopositioner stage driven by piezoelectric ceramics (PZT) is designed.

Both the structure of the piezoelectric buzzer and the principle of the piezoelectric clutch are first expressed.

These sensors are commonly manufactured out of piezoelectric materials such as quartz.

The method of HBV blood sample detected by piezoelectric biosensor is developed.

Based on the bimorph piezoelectric vibrator, a piezoelectric pump with two active valves was designed and manufactured.

and recent progress in piezoelectric polymers.

The piezoelectric cantilever model are designed, then it is calculated on with SAMCEF.

A novel valve less piezoelectric pump with Cluster of Unsymmetrical Hump Structure(CUHS)is presented.

The influence of piezoelectric ceramic volume content and species on the 0-3 cement-based piezoelectric composites was researched in detail.

Piezoelectric filters of assessed quality - Part 4-1 : blank detail specification - Capability approval.

Based on the above mentioned key technologies, a piezoelectric pump closed loop control system was established.

This is also the case for techniques using thermoelectric, piezoelectric and conventional pyroelectric platforms.

The wires produce electricity when under mechanical stress, called the piezoelectric effect.

Small, undamped piezoelectric cubic elements of 2 mm side length are used which operate below their first resonance frequency.

The use of conical piezoelectric transducers as point acoustic sources has been investigated.

Two models were proposed to predict piezoelectric fracture loads by using the continuum damage theory.

"A key issue for piezoelectric materials is order, " he says.

These conclusions give directions for designing the structure of piezoelectric bimorphs actuators.

The crystal that can produce piezoelectric effect calls piezocrystal.

Based on the shear vibration of piezoelectric ceramics, a novel piezoelectric micro jet is designed.

A new type of mode convert piezoelectric drill was presented.

Rion "PV Series" piezoelectric accelerometers have a variety of types, for customers to choose the suitable one for their measurements.

In this paper an active vibration control system of 2D flexible plate is presented by using piezoelectric sensors and actuators.

Pipeline leak detection based on the signal features of piezoelectric sensor is proposed.

Piezoelectric filters - Part 2 : guide to the use of piezoelectric filters - Section 2 : piezoelectric ceramic filters .

Based on the piezoelectric effect of piezoelectric materials, piezoceramic patches(PZT) can be used both as sensors and drivers.

Properties of dielectric breakdown of 2 2 piezoelectric composites in series were studied.

The method can be used in some phase shift interference where phase shift with piezoelectric ceramics can not be used.

On this orientation control layer (15), there is provided a piezoelectric layer (16) orientated on the (001) plane by priority.

The main thing at work in the fibres is a type of piezoelectric polymer.

That was used piezoelectric ceramics which was in combine with piezoelectric ceramics driver.

A series of lead-based perovskite ceramics, such as PZT, PMN-PT, PZN-PT, show excellent piezoelectric and electromechanical properties.

Piezoelectric pump is a typical micro executing part in small volume distribution system.

Thus, it is of theoretical and practical importance to study the electro-elastic fields near the fibers in piezoelectric composites.

(1-x)BiScO3-xPbTiO3(BS-PT) is a new type of high-temperature piezoelectric system.

Micro-piezoelectric ink jet system that is set on the moshui of the sprinkler head ansducer, ansducer by print signal and control ink jet.

Analysis of Responses of an Irregular Enclosure Excited by a Pair of PVDF Piezoelectric Film

Three-dimensional interactions of an external circular crack in an infinite transversely isotropic piezoelectric body with dipoles

Analysis of the guided waves generated by an interdigitaltransducer in the waveguide of piezoelectric crystal-liquid-isotropic solid

Analytical Solution of a Simply Supported Piezoelectric Beam Subjected to a Uniformly-Distributed Loading

a fluid output part connecting to a second port of a piezoelectric member of the pilot valve;

Analysis of vibration mode on piezoelectric ceramic actuator for ultrasonic vibration bearing and experimental study of the anti-friction

Study of Modulated Laser Interferometry for Piezoelectric Characteristic Measurement of Piezoelectric Ceramic

Industry: Electrical Electrical Products Processing; Semiconductor materials; Crystal resonator; Piezoelectric crystal materials;

The electro-mechanical equivalent circuit of a piezoelectric ceramic thin ring in radial vibration and its analysis

Analysis of Anti-plane Vibration of a Piezoelectric Material with a Conducting Rigid Inclusion

Acoustics-Characteristics and measurements of ultrasonic piezoelectric transducers up to 100 kHz

Industry: Interior Paint; Capacitor; Diode; Piezoelectric crystal materials; Electronics & Electrical Products Agents; Agricultural agent;

The Immobilization Methods of Piezoelectric Immunosensor on the Surface

piezoelectric generator; vibration; positive piezoelectric effect; piezoelectric vibrator; finite element analysis;

Dynamic Characteristic Study of a Piezoelectric Inkjet Print Head

Industry: Electronics manufacturing equipment; Road lighting; Electric Instruments; Machine lamps; Piezoelectric speaker;

a first transmission end plate is arranged between the upper end part of the internal tube and the upper end part of the piezoelectric pile;

Industry: Inductors; Semiconductor materials; Crystal resonator; Filter; Piezoelectric crystal materials;

Three-Dmensional Interactions of a Circular Crack in a Transversely Isotropic Piezoelectric Space With Resultant Sources

A study of the characteristic of a piezoelectric ceramic valve

Industry: Piezoelectric crystal materials; Impregnated paper; Grindstone, whetstone; Grinding wheel; Grinding paste; Polishing Paste;

Analytical Solutions to a Functionally Gradient Piezoelectric Curved Cantilever Under External Electric Field