Eco-friendly highly sensitive transducers based on a new KNN-NTK-FM lead-free piezoelectric ceramic for high-frequency biomedical ultrasonic imaging applications

	Eco-friendly highly sensitive transducers based on a new KNN-NTK-FM lead-free piezoelectric ceramic for high-frequency biomedical ultrasonic imaging applications
	Takayuki Matsuoka; Masato Yamazaki; Gengxi Lu; Xuejun Qian; Teng Ma; Qifa Zhou; Ruimin Chen; Laiming Jiang; Jianguo Zhu; Ahmad Safari
刊名	IEEE Transactions on Biomedical Engineering
	2018
文献子类	期刊论文
英文摘要	High-frequency ultrasonic imaging with improved spatial resolution has gained increasing attention in the field of biomedical imaging. Sensitivity of transducers plays a pivotal role in determining ultrasonic image quality. Conventional ultrasonic transducers are mostly made from lead-based piezoelectric materials that may be harmful to the human body and the environment. In this study, a new (K,Na)NbO 3 -KTiNbO 5 -BaZrO 3 -Fe 2 O 3 -MgO (KNN-NTK-FM) lead-free piezoelectric ceramic was utilized in developing eco-friendly transducers for high-frequency biomedical ultrasonic imaging applications. A needle transducer with a small active aperture size of 0.45 × 0.55 mm 2 was designed and evaluated. The fabricated transducer exhibits great performance with a high center frequency (52.6 MHz), a good electromechanical coupling ( k eff ~ 0.45), a large bandwidth (64.4% at -6 dB), and a very low two-way insertion loss (10.1 dB). Such high sensitivity is superior to those transducers based on other lead-free piezoelectric materials and can even be comparable to the lead-based ones. Imaging performance of the KNN-NTK-FM needle transducer was analyzed by imaging a wire phantom and an agar tissue-mimicking phantom. Imaging capabilities of the transducer were further demonstrated by ex vivo imaging studies on a porcine eyeball and a rabbit aorta. The results suggest that the KNN-NTK-FM piezoceramic has many attractive properties over other lead-free piezoelectric materials in developing eco-friendly highly sensitive transducers for high-frequency biomedical ultrasonic imaging applications. (View more)
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/14378]
专题	深圳先进技术研究院_医工所
推荐引用方式 GB/T 7714	Takayuki Matsuoka,Masato Yamazaki,Gengxi Lu,et al. Eco-friendly highly sensitive transducers based on a new KNN-NTK-FM lead-free piezoelectric ceramic for high-frequency biomedical ultrasonic imaging applications[J]. IEEE Transactions on Biomedical Engineering,2018.
APA	Takayuki Matsuoka.,Masato Yamazaki.,Gengxi Lu.,Xuejun Qian.,Teng Ma.,...&Tianfu Zhang.(2018).Eco-friendly highly sensitive transducers based on a new KNN-NTK-FM lead-free piezoelectric ceramic for high-frequency biomedical ultrasonic imaging applications.IEEE Transactions on Biomedical Engineering.
MLA	Takayuki Matsuoka,et al."Eco-friendly highly sensitive transducers based on a new KNN-NTK-FM lead-free piezoelectric ceramic for high-frequency biomedical ultrasonic imaging applications".IEEE Transactions on Biomedical Engineering (2018).