Self-separated hydrothermal lead zirconate titanate thick films for high frequency transducer applications

Zhu, Benpeng; Zhou, Qifa; Shi, Jing; Shung, K. K.; Irisawa, Sachie; Takeuchi, Shinichi

doi:10.1063/1.3095504

Cited by 29 publications

(22 citation statements)

References 13 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, a macroscopic piezoelectric polarization was forced to align upwards, normal to the substrate ( Supplementary Fig. S2) 20 . When the PZT nanowires are subject to a uniaxial compressive force, a piezoelectric field is created inside the nanowires, which produces a transient flow of free electrons in the external load to screen the piezopotential.…”

Section: Resultsmentioning

confidence: 99%

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

2010

View full text Add to dashboard Cite

Harvesting energy from irregular/random mechanical actions in variable and uncontrollable environments is an effective approach for powering wireless mobile electronics to meet a wide range of applications in our daily life. Piezoelectric nanowires are robust and can be stimulated by tiny physical motions/disturbances over a range of frequencies. Here, we demonstrate the first chemical epitaxial growth of PbZr x Ti 1 − x o 3 (PZT) nanowire arrays at 230 °C and their application as high-output energy converters. The nanogenerators fabricated using a single array of PZT nanowires produce a peak output voltage of ~0.7 V, current density of 4 µA cm − 2 and an average power density of 2.8 mW cm − 3 . The alternating current output of the nanogenerator is rectified, and the harvested energy is stored and later used to light up a commercial laser diode. This work demonstrates the feasibility of using nanogenerators for powering mobile and even personal microelectronics.

show abstract

Section: Resultsmentioning

confidence: 99%

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

2010

View full text Add to dashboard Cite

show abstract

“…Common piezoelectric materials include piezoelectric crystals (such as quartz, LiNbO 3 , and LiTaO 3 [17,18]), piezoelectric ceramics (such as PZT system [19,20]), and organic piezoelectric materials (such as polyvinylidene fluoride (PVDF) [21]). In addition, piezoelectric films have recently attracted considerable attention in the development of various high frequency ultrasonic transducers, sensors and MEMS devices [22,23,24]. …”

Section: Introductionmentioning

confidence: 99%

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Sun

Cao

2014

Progress in Materials Science

519

264

View full text Add to dashboard Cite

In the past decade, domain engineered relaxor-PT ferroelectric single crystals, including (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT), (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZN-PT) and (1-x-y)Pb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-xPbTiO3 (PIN-PMN-PT), with compositions near the morphotropic phase boundary (MPB) have triggered a revolution in electromechanical devices owing to their giant piezoelectric properties and ultra-high electromechanical coupling factors. Compared to traditional PbZr1-xTixO3 (PZT) ceramics, the piezoelectric coefficient d33 is increased by a factor of 5 and the electromechanical coupling factor k33 is increased from < 70% to > 90%. Many emerging rich physical phenomena, such as charged domain walls, multi-phase coexistence, domain pattern symmetries, etc., have posed challenging fundamental questions for scientists. The superior electromechanical properties of these domain engineered single crystals have prompted the design of a new generation electromechanical devices, including sensors, transducers, actuators and other electromechanical devices, with greatly improved performance. It took less than 7 years from the discovery of larger size PMN-PT single crystals to the commercial production of the high-end ultrasonic imaging probe “PureWave”. The speed of development is unprecedented, and the research collaboration between academia and industrial engineers on this topic is truly intriguing. It is also exciting to see that these relaxor-PT single crystals are being used to replace traditional PZT piezoceramics in many new fields outside of medical imaging. The new ternary PIN-PMN-PT single crystals, particularly the ones with Mn-doping, have laid a solid foundation for innovations in high power acoustic projectors and ultrasonic motors, hinting another revolution in underwater SONARs and miniature actuation devices. This article intends to provide a comprehensive review on the development of relaxor-PT single crystals, spanning material discovery, crystal growth techniques, domain engineering concept, and full-matrix property characterization all the way to device innovations. It outlines a truly encouraging story in materials science in the modern era. All key references are provided and 30 complete sets of material parameters for different types of relaxor-PT single crystals are listed in the Appendix. It is the intension of this review article to serve as a resource for those who are interested in basic research and practical applications of these relaxor-PT single crystals. In addition, possible mechanisms of giant piezoelectric properties in these domain-engineered relaxor-PT systems will be discussed based on contributions from polarization rotation and charged domain walls.

show abstract

“…In our previous work, sol-gel lead zirconate titanate (PZT) and sputtered zinc oxide (ZnO) thin films have been investigated for fabrication of high frequency (>80 MHz) ultrasonic transducers. 9–11 However, the sensitivity of sol-gel PZT transducer was relatively low. The drawbacks to ZnO as active transducer elements are the low electromechanical coupling coefficient ( k t, =0.28) and relative small dielectric constant( ε r /ε 0 =8), which make them not suitable for fabricating small aperture high sensitivity transducers.…”

Section: Introductionmentioning

confidence: 99%

80-MHz intravascular ultrasound transducer using PMN-PT free-standing film

Chung

et al. 2011

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

Self Cite

View full text Add to dashboard Cite

[Pb(Mg1/3Nb2/3)O3]0.63[PbTiO3]0.37 (PMN-PT) free standing film of comparable piezoelectric property to bulk PMN-PT with a thickness of 33 μm has been fabricated using a modified precursor coating approach. At 1 KHz, the dielectric constant and loss were 4,160 and 0.0291, respectively. The remnant polarization and coercive field were 28 μC/cm2 and 18.43 kV/cm. The electromechanical coupling coefficient kt was measured to be 0.55, which was close to that of bulk PMN-PT single crystal material. A high frequency (80 MHz) miniature ultrasonic transducer with high sensitivity was fabricated from this film. In vitro imaging of a rabbit aorta was performed to demonstrate the application of this material to intravascular ultrasound imaging at 80 MHz. Compared to a 35 MHz ultrasonic image, the 80 MHz image showed superior resolution and contrast.

show abstract

Self-separated hydrothermal lead zirconate titanate thick films for high frequency transducer applications

Cited by 29 publications

References 13 publications

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

Piezoelectric-nanowire-enabled power source for driving wireless microelectronics

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

80-MHz intravascular ultrasound transducer using PMN-PT free-standing film

Contact Info

Product

Resources

About