Piezoelectric transducers for medical ultrasonic imaging

Gururaja, T.R.

doi:10.1109/isaf.1992.300680

Cited by 33 publications

(22 citation statements)

References 6 publications

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“…In addition, piezocomposite materials can be mechanically shaped, allowing for the fabrication of transducers with concave or convex surface due to the flexibility of the polymer phase. The advantages of composites over monolithic piezoelectrics for medical transducer applications are summarized in Table 3 [51,52]. …”

Section: Potential Applicationsmentioning

confidence: 99%

High Temperature, High Power Piezoelectric Composite Transducers

Lee

Zhang

Bar‐Cohen

et al. 2014

Sensors

157

106

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Piezoelectric composites are a class of functional materials consisting of piezoelectric active materials and non-piezoelectric passive polymers, mechanically attached together to form different connectivities. These composites have several advantages compared to conventional piezoelectric ceramics and polymers, including improved electromechanical properties, mechanical flexibility and the ability to tailor properties by using several different connectivity patterns. These advantages have led to the improvement of overall transducer performance, such as transducer sensitivity and bandwidth, resulting in rapid implementation of piezoelectric composites in medical imaging ultrasounds and other acoustic transducers. Recently, new piezoelectric composite transducers have been developed with optimized composite components that have improved thermal stability and mechanical quality factors, making them promising candidates for high temperature, high power transducer applications, such as therapeutic ultrasound, high power ultrasonic wirebonding, high temperature non-destructive testing, and downhole energy harvesting. This paper will present recent developments of piezoelectric composite technology for high temperature and high power applications. The concerns and limitations of using piezoelectric composites will also be discussed, and the expected future research directions will be outlined.

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Section: Potential Applicationsmentioning

confidence: 99%

High Temperature, High Power Piezoelectric Composite Transducers

Lee

Zhang

Bar‐Cohen

et al. 2014

Sensors

157

106

View full text Add to dashboard Cite

show abstract

“…There are a few natural materials that exhibit piezoelectricity, of which piezoelectric ceramics (Lead Zirocondate Titanate, or in short, PZT), piezoelectric polymers (Polyvinylidene Fluoride, denoted as PVDF) and Piezoelectric Ceramic/Polymer Composites are frequently used piezoelectric actuators and sensors for structural health monitoring and structural repair. Gururaja [37,38] summarized the advantages and disadvantages of each type of the material: (1) Ceramics are less expensive and more easily fabricated than polymers. They have relatively high dielectric constants and good electromechanical coupling.…”

Section: Piezoelectric Materials and Applicationsmentioning

confidence: 99%

Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

2010

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The paper reviews the recent applications of piezoelectric materials in structural health monitoring and repair conducted by the authors. First, commonly used piezoelectric materials in structural health monitoring and structure repair are introduced. The analysis of plain piezoelectric sensors and actuators and interdigital transducer and their applications in beam, plate and pipe structures for damage detection are reviewed in detail. Second, an overview is presented on the recent advances in the applications of piezoelectric materials in structural repair. In addition, the basic principle and the current development of the technique are examined.

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“…These devices are generally useful for applications that require the generation of sound in air and liquids. Examples of such applications include phased array microphones, ultrasound equipment, inkjet droplet actuators, drug discovery, sonar transducers, bioimaging, and acousto-biotherapeutics (see [6], [19][20][21][22]). Only few papers are devoted to the strict mathematical analysis of the above named problems.…”

Section: Introductionmentioning

confidence: 99%

Mathematical problems of interaction of different dimensional physical fields

Chkadua

2013

J. Phys.: Conf. Ser.

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Abstract. In the paper we consider mathematical problem of interaction of different dimensional physical fields for complex composite structures. We investigate the mixed transmission problem arising in the model of fluid-solid acoustic interaction when a piezo-ceramic elastic body (Ω + ) is embedded in an unbounded fluid (Ω − ). The corresponding physical process is described by boundary-transmission problems for second order partial differential equations. In particular, in the bounded domain Ω + we have 4 × 4 dimensional matrix strongly elliptic second order partial differential equation, while in the unbounded complement domain Ω − we have a scalar Helmholtz equation describing an acoustic wave propagation. The physical kinematic and dynamic relations mathematically are described by appropriate boundary and transmission conditions. With the help of the potential method and theory of pseudodifferential equations the uniqueness and existence theorems are proved in Sobolev-Slobodetski spaces.

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Piezoelectric transducers for medical ultrasonic imaging

Cited by 33 publications

References 6 publications

High Temperature, High Power Piezoelectric Composite Transducers

High Temperature, High Power Piezoelectric Composite Transducers

Applications of Piezoelectric Materials in Structural Health Monitoring and Repair: Selected Research Examples

Mathematical problems of interaction of different dimensional physical fields

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