期刊
CERAMICS INTERNATIONAL
卷 42, 期 16, 页码 18554-18559出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.08.195
关键词
PLZT fiber; Composites; Extrusion; Biomedical applications
资金
- National Institutes of Health [P41-EB002182]
- China Scholarship Council of China (CSC)
This paper presents fabrication of transparent lanthanum zirconate titanate (PLZT) fibers using extrusion technique. The diameter of the sintered PLZT fiber is about 400-mu m, and the fibers exhibit very good transparency. Measured dielectric constant, remnant polarization and coercive field of PLZT fiber were found to be 2340, 22.5-mu C/cm(2), and 9.8-kV/cm, respectively. The transparent piezoelectric materials may exhibit great potential for Photoacoustic (PA) imaging and hybrid intravascular imaging combining OCT and ultrasound imaging by using the transparent fiber as the path of light propagation and ultrasonic transducer material. In our study, these transparent PLZT fibers were designed to fabricate two types of high-frequency ultrasonic transducers: small aperture single PLZT fiber/epoxy composite and large aperture 1-3 PLZT fiber/epoxy composite ultrasonic transducers. Besides, a 20-mu m tungsten wire phantom and the cornea of the porcine eye were also imaged with the 1-3 PLZT fiber/epoxy composite ultrasonic transducer to demonstrate its imaging capability. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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