Fabrication and Characterization of Single-Aperture 3.5-MHz BNT-Based Ultrasonic Transducer for Therapeutic Application.

	Fabrication and Characterization of Single-Aperture 3.5-MHz BNT-Based Ultrasonic Transducer for Therapeutic Application.
	Ma, T.; Zhong, Hui; Zhou, Qifa; Safari, Ahmad; Taghaddos, Elaheh; Wan, M. X.
刊名	IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
	2018
文献子类	期刊论文
英文摘要	This paper discusses the fabrication and characterization of 3.5-MHz single-element transducers for therapeutic applications in which the active elements are made of hard lead-free BNT-based and hard commercial PZT (PZT-841) piezoceramics. Composition of (BiNa0.88 K0.08Li0.04)(0.5)(Ti0.985Mn0.015)O-3 (BNKLT88-1.5Mn) was used to develop lead-free piezoelectric ceramic. Mn-doped samples exhibited high mechanical quality factor (Q(m)) of 970, thickness coupling coefficient (k(t)) of 0.48, a dielectric constant (epsilon(T)(33)) of 310 (at 1 kHz), depolarization temperature (T-d) of 200 degrees C, and coercive field (E-c) of 52.5 kV/cm. Two different unfocused single-element transducers using BNKLT88-1.5Mn and PZT-841 with the same center frequency of 3.5 MHz and similar aperture size of 10.7 and 10.5 mm were fabricated. Pulse-echo response, acoustic frequency spectrum, acoustic pressure field, and acoustic intensity field of transducers were characterized. The BNT-based transducer shows linear response up to the peak-to-peak voltage of 105 V in which the maximum rarefactional acoustic pressure of 1.1 MPa, and acoustic intensity of 43 W/cm(2) were achieved. Natural focal point of this transducer was at 60 mm from the surface of the transducer.
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/172644/14321]
专题	深圳先进技术研究院_医工所
推荐引用方式 GB/T 7714	Ma, T.,Zhong, Hui,Zhou, Qifa,et al. Fabrication and Characterization of Single-Aperture 3.5-MHz BNT-Based Ultrasonic Transducer for Therapeutic Application.[J]. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL,2018.
APA	Ma, T.,Zhong, Hui,Zhou, Qifa,Safari, Ahmad,Taghaddos, Elaheh,&Wan, M. X..(2018).Fabrication and Characterization of Single-Aperture 3.5-MHz BNT-Based Ultrasonic Transducer for Therapeutic Application..IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL.
MLA	Ma, T.,et al."Fabrication and Characterization of Single-Aperture 3.5-MHz BNT-Based Ultrasonic Transducer for Therapeutic Application.".IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL (2018).