A facile method to fabricate vertically aligned (K,Na)NbO3 lead-free piezoelectric nanorods

Xu, Ying; Yu, Qi; Li, Jing‐Feng

doi:10.1039/c2jm35090d

Cited by 38 publications

(25 citation statements)

References 24 publications

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“…Despite the moderate piezoelectric properties compared with PZT, the KNN‐based ceramics do possess certain distinct features, which can manifest their superiorities. This aspects will be discussed to a degree with the following two examples, although these do not limit the attractive application regimes for KNN‐based piezoceramics. Once KNN‐based piezoceramics are further understood and recognized by the academia as well as industry, it is believed that more and more advantages of using KNN‐based piezoceramics will be revealed.…”

Section: Promising Applications For Transducers and Energy Harvestingmentioning

confidence: 99%

“…While much effort has been focused on the investigation of piezoceramics, increasing attention has been paid to the development of one‐dimensional (1D) piezoelectrics, e.g., nanorod, nanowire, nanotube, etc., which may be utilized in the fields of nanoelectromechanical system (NEMS), energy harvesting devices, photocatalysis, so on . In the case of piezoelectric materials, a wide variety of materials including ZnO, BaTiO 3 , PZT, etc.…”

Section: Promising Applications For Transducers and Energy Harvestingmentioning

confidence: 99%

“…Later, Xu et al . reported a facile method to fabricate vertically aligned KNN nanorods, which are essentially promising for applications of energy harvesting as well as 1–3‐type multifunctional composites …”

Section: Promising Applications For Transducers and Energy Harvestingmentioning

confidence: 99%

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(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

et al. 2013

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Environment‐friendly lead‐free piezoelectric ceramics have been studied extensively in the past decade with great progress particularly in systems based on a niobate perovskite compound formulated as (K, Na)NbO3 (abbreviated as KNN). A comprehensive review on the latest development of KNN‐based piezoelectric ceramics is presented in this article, including the phase structure, property enhancement approaches, and sintering processes as well as the status of some promising applications. The phase structure of KNN was reexamined and associated with the effect of chemical modification on its tetragonal‐to‐orthorhombic transition. Then, a special focus is placed on the temperature dependence of piezoelectric properties of KNN‐based ceramics, followed by reviewing the recent approaches devoted to the temperature‐stability enhancement. The processing fundamentals related to the sintering of KNN‐based ceramics are also presented with an emphasis on compositional and microstructural control. Finally, this review introduces several industrial attempts of traditional piezoceramic products using KNN‐based ceramics and the studies on some promising application in authors' laboratory.

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Section: Promising Applications For Transducers and Energy Harvestingmentioning

confidence: 99%

Section: Promising Applications For Transducers and Energy Harvestingmentioning

confidence: 99%

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(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

et al. 2013

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“…However, due to the physical limitation of blade and brittleness of the active materials, the traditional method cannot be used to develop high- frequency (>30 MHz) composite transducers [90–93]. With the increasing demand of high-frequency ultrasonic applications, etch-and-fill technique and facile method have been developed recently [396–397]. Using the ICP (Inductively Coupled Plasma) -RIE (Reactive Ion Etching) dry etching technique, PMN-PT single crystals can be etched to a periodic pillar pattern with a sidewall angle of >85° [398–404].…”

Section: Figure Of Merits (Fom) Of Piezoelectric Materials For Vmentioning

confidence: 99%

Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers – A review

Zhang

Jiang

et al. 2015

Progress in Materials Science

702

339

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Relaxor-PbTiO3 (PT) based ferroelectric crystals with the perovskite structure have been investigated over the last few decades due to their ultrahigh piezoelectric coefficients (d33 > 1500 pC/N) and electromechanical coupling factors (k33 > 90%), far outperforming state-of-the-art ferroelectric polycrystalline Pb(Zr,Ti)O3 ceramics, and are at the forefront of advanced electroacoustic applications. In this review, the performance merits of relaxor-PT crystals in various electroacoustic devices are presented from a piezoelectric material viewpoint. Opportunities come from not only the ultrahigh properties, specifically coupling and piezoelectric coefficients, but through novel vibration modes and crystallographic/domain engineering. Figure of merits (FOMs) of crystals with various compositions and phases were established for various applications, including medical ultrasonic transducers, underwater transducers, acoustic sensors and tweezers. For each device application, recent developments in relaxor-PT ferroelectric crystals were surveyed and compared with state-of-the-art polycrystalline piezoelectrics, with an emphasis on their strong anisotropic features and crystallographic uniqueness, including engineered domain - property relationships. This review starts with an introduction on electroacoustic transducers and the history of piezoelectric materials. The development of the high performance relaxor-PT single crystals, with a focus on their uniqueness in transducer applications, is then discussed. In the third part, various FOMs of piezoelectric materials for a wide range of ultrasound applications, including diagnostic ultrasound, therapeutic ultrasound, underwater acoustic and passive sensors, tactile sensors and acoustic tweezers, are evaluated to provide a thorough understanding of the materials’ behavior under operational conditions. Structure-property-performance relationships are then established. Finally, the impacts and challenges of relaxor-PT crystals are summarized to guide on-going and future research in the development of relaxor-PT crystals for the next generation electroacoustic transducers.

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“…[14][15][16][17][18][19] In recent years, hydrothermal reaction became to be a regnant method to synthesize single crystalline PZT nanorod because of its advantages of simple, cheap, and feasibility to control the diameter of the nanorod. [20][21][22][23][24][25] In this paper, single crystalline PZT nanorod was synthesized through optimizing surfactants amount of poly(vinyl alcohol) (PVA) and poly(acrylate acid) (PAA). PZT nanorod array perpendicular to the Nb:SrTiO 3 (NSTO) substrate were obtained and the pyroelectric coefficient was given.…”

Section: Introductionmentioning

confidence: 99%

(001)-orientation single crystalline Pb(Zr_0.3Ti_0.7)O₃pyroelectric nanorod array synthesized by hydrothermal reaction

Wu¹,

Peng²,

Sun³

et al. 2015

Jpn. J. Appl. Phys.

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The fabrication and pyroelectric coefficient of Pb(Zr 0.3 Ti 0.7 )O 3 (PZT) nanorod array on Nb:SrTiO 3 (NSTO) substrates were reported. XRD and TEM revealed that PZT nanorods were (001) orientation single crystalline. Dense PZT nanorod array were synthesized on NSTO using optimal 0.8 g/L poly(vinyl alcohol) (PVA) and 3.2 g/L poly(acrylate acid) (PAA). Maximum pyroelectric coefficient, 5.8 ' 10 %9 C/(cm 2 &K), was measured for samples synthesized at 230 °C and poled under 5 V. The single crystalline PZT nanorod array material has potential application in small spatial (1-10 µm) infrared detectors, benefiting to achieve distinguished detector performances.

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A facile method to fabricate vertically aligned (K,Na)NbO3 lead-free piezoelectric nanorods

Cited by 38 publications

References 24 publications

(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers – A review

(001)-orientation single crystalline Pb(Zr_0.3Ti_0.7)O₃pyroelectric nanorod array synthesized by hydrothermal reaction

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A facile method to fabricate vertically aligned (K,Na)NbO3 lead-free piezoelectric nanorods

Cited by 38 publications

References 24 publications

(K,Na)NbO3‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

(K,Na)NbO3‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers – A review

(001)-orientation single crystalline Pb(Zr0.3Ti0.7)O3pyroelectric nanorod array synthesized by hydrothermal reaction

Contact Info

Product

Resources

About

(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

(K,Na)NbO₃‐Based Lead‐Free Piezoceramics: Fundamental Aspects, Processing Technologies, and Remaining Challenges

(001)-orientation single crystalline Pb(Zr_0.3Ti_0.7)O₃pyroelectric nanorod array synthesized by hydrothermal reaction