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http://dx.doi.org/10.4313/JKEM.2016.29.8.483

Modified Piezoelectric Ceramics for Portable Ultrasonic Medical Probe Application  

Kang, Dong Heon (Department of Electronic Materials Engineering, The University of Suwon)
Chae, Mi Na (Department of Electronic Materials Engineering, The University of Suwon)
Hong, Se Won (Digital Echo Co., Ltd.)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.29, no.8, 2016 , pp. 483-488 More about this Journal
Abstract
Ultrasound imaging by using piezoelectric materials, such as lead zirconium titanate (PZT) has been one of the most preferred modes of imaging in the medical field due to its simple, low cost and non-ionizing radiation in comparison to other imaging techniques. Recently, the market demand for portable ultrasound is becoming larger with applications in developing countries, disaster area, military, and emergency purposes. However, most of ultrasound probes used is bulky and high power consumable, so unsuitable for such applications. In this study, the 3 layered ceramic specimen consisted of 128 pitches of $420{\mu}m$ in width and $450{\mu}m$ in thickness were prepared by using the Ti-rich PZT compositions co-fired at $1,050^{\circ}C$. Their electrical and ultrasound pulse-echo properties were investigated and compared to the single layer specimen. The 3 layered ultrasound probe showed 1.584 V of Vp-p, which is 3.2 times higher than single layered one, implying that it would allow effectively such a portable ultrasound probe system. The result were discussed in terms of higher capacitance, lower impedance and higher dielectric coefficient of the 3 layered ultrasound probe.
Keywords
Portable medical ultrasound probe; Layered PZT ceramics; Impedance; Piezoelectric coefficient; Pulse-echo property; Vp-p;
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