Lead-Free KNN-Based Textured Ceramics for High-Frequency Ultrasonic Transducer Application

Quan, Yi; Fei, Chunlong; Ren, Wei; Wang, Lingyan; Niu, Gang; Zhao, Jinyan; Zhuang, Jian; Zhang, Junshan; Zheng, Kun; Peng, Lin; Sun, Xinhao; Chen, Qiang; Ye, Zuo‐Guang; Karaki, Tomoaki

doi:10.1109/tuffc.2020.3039120

Cited by 22 publications

(7 citation statements)

References 34 publications

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“…In the optimization design of a piezocomposite ultrasonic transducer, Chao et al [ 30 ] designed a 1-3 piezocomposite PUT with a matching layer by using an ECM and acoustic theory, as shown in Figure 3 E. The errors between theoretical and experimental results of the 1-3 piezocomposite PUT were less than 5.3%. In order to achieve NDT at high temperatures, Sun et al [ 31 ] designed a PUT with a CF of 7 MHz based on PiezoCAD software, as shown in Figure 3 F. In addition, Quan et al [ 32 ] designed a Put with high frequency using PiezoCAD software. The fabricated PUT had a CF of higher than 80 MHz and a −6 dB bandwidth of 52%, which had excellent resolution for ultrasonic imaging.…”

Section: Traditional Optimization Design Methods For a Putmentioning

confidence: 99%

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

et al. 2021

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A piezoelectric ultrasonic transducer (PUT) is widely used in nondestructive testing, medical imaging, and particle manipulation, etc., and the performance of the PUT determines its functional performance and effectiveness in these applications. The optimization design method of a PUT is very important for the fabrication of a high-performance PUT. In this paper, traditional and efficient optimization design methods for a PUT are presented. The traditional optimization design methods are mainly based on an analytical model, an equivalent circuit model, or a finite element model and the design parameters are adjusted by a trial-and-error method, which relies on the experience of experts and has a relatively low efficiency. Recently, by combining intelligent optimization algorithms, efficient optimization design methods for a PUT have been developed based on a traditional model or a data-driven model, which can effectively improve the design efficiency of a PUT and reduce its development cycle and cost. The advantages and disadvantages of the presented methods are compared and discussed. Finally, the optimization design methods for PUT are concluded, and their future perspectives are discussed.

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Section: Traditional Optimization Design Methods For a Putmentioning

confidence: 99%

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

et al. 2021

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“…The KNN family is the most promising candidate for lead-free piezoelectric ultrasound transducer applications because of its stable piezoelectric properties (~700 pC N -1 ), high k t (~0.6), and relatively high Curie temperature (~302 °C). Therefore, KNN-based piezoelectric materials have been extensively investigated for the development of ultrasound transducers [17,40,62] and (Bi 0.5 Na 0.5 ) TiO 3 -modified KNN-based textured ceramicsusing the reactive template grain growth method and built an 81 MHz (-6 dB bandwidth: 52%) needle transducer [65].…”

Section: Lead-free Piezoelectric Transducermentioning

confidence: 99%

Recent Advancements in Ultrasound Transducer: From Material Strategies to Biomedical Applications

Zhang

et al. 2022

BME Front

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Ultrasound is extensively studied for biomedical engineering applications. As the core part of the ultrasonic system, the ultrasound transducer plays a significant role. For the purpose of meeting the requirement of precision medicine, the main challenge for the development of ultrasound transducer is to further enhance its performance. In this article, an overview of recent developments in ultrasound transducer technologies that use a variety of material strategies and device designs based on both the piezoelectric and photoacoustic mechanisms is provided. Practical applications are also presented, including ultrasound imaging, ultrasound therapy, particle/cell manipulation, drug delivery, and nerve stimulation. Finally, perspectives and opportunities are also highlighted.

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“…NaNbO 3 (NN) templates were used to texture the NKN-related piezoceramics along the (001) direction. [7][8][9][10][11] In particular, the textured (K, Na)(Nb, Sb)O 3 -CaZrO 3 -(Bi, K)HfO 3 piezoceramics using the NN templates were reported to have a large piezoelectric charge constant (d 33 ) of 700 pC/N. 10 Therefore, RTGG is a promising method to enhance the piezoelectricity of NKN-related lead-free piezoceramics.…”

Section: Introductionmentioning

confidence: 99%

“…The reactive template grain growth (RTGG) method is used to line up the grains of the piezoceramics along a specific orientation using single‐crystal templates. NaNbO 3 (NN) templates were used to texture the NKN‐related piezoceramics along the (001) direction 7–11 . In particular, the textured (K, Na)(Nb, Sb)O 3 ‐CaZrO 3 ‐(Bi, K)HfO 3 piezoceramics using the NN templates were reported to have a large piezoelectric charge constant ( d 33 ) of 700 pC/N 10 .…”

Section: Introductionmentioning

confidence: 99%

Structural and piezoelectric properties of textured NLKNS‐CZ thick films and their application in planar piezoactuator

Chae

Kim

et al. 2021

J Am Ceram Soc.

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0.97(Na 0.5-x Li x K 0.5 )(Nb 0.89 Sb 0.11 )O 3 -0.03CaZrO 3 [(N 0.5-x L x K)(NS)-CZ] piezoceramic (x = 0.325) has a pseudocubic-tetragonal-orthorhombic (PC-T-O) multistructure. The PC structure formed in this piezoceramic was identified as the R3m rhombohedral structure. This piezoceramic showed the large piezoelectric charge constant (d 33 ) of 515 pC/N due to the PC-T-O multi-structure. The NaNbO 3 (NN) templates were used to texture the (N 0.5-x L x K)(NS)-CZ thick films along the (001) direction, and the textured thick film (x = 0.0375) had a large Lotgering factor of 95.6%. The PC-T-O multi-structure was observed in this thick film (x = 0.0375), but the thick film (x = 0.0325) showed a PC-O structure owing to the diffusion of the NN templates into the thick film. The textured thick film (x = 0.0375) exhibited an increased d 33 of 625 pC/N because of the PC-T-O multistructure and the lineup of grains along the [001] direction. A textured thick film(x = 0.0375) was used to fabricate a planar-type actuator to confirm its applicability to electrical devices. This actuator exhibits large acceleration (580.3 G) and displacement (150 μm) at a low electric field of 0.2 kV/mm with a short response time of 3.0 ms. Therefore, the (N 0.5-x L x K)(NS)-CZ thick films are excellent leadfree piezoceramics.

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Lead-Free KNN-Based Textured Ceramics for High-Frequency Ultrasonic Transducer Application

Cited by 22 publications

References 34 publications

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

Recent Development and Perspectives of Optimization Design Methods for Piezoelectric Ultrasonic Transducers

Recent Advancements in Ultrasound Transducer: From Material Strategies to Biomedical Applications

Structural and piezoelectric properties of textured NLKNS‐CZ thick films and their application in planar piezoactuator

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