Performance of Multilayered Ultrasonic Transducers Comprising Vinylidene Fluoride and Trifluoroethylene Copolymer Films and Ferroelectric Ceramic Plates
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概要
- 論文の詳細を見る
Frequency and impulse response characteristics of multilayered ultrasonic transducers comprising forward films of vinylidene fluoride and trifluoroethylene copolymer (P(VDF-TrFE)) and backward ferroelectric ceramic plates of lead-zirconate-titanate (PZT) and a backing load, are studied both theoretically and experimentally. These transducers can be driven in three operation modes : (1) P(VDF-TrFE) as a transmitter and a receiver, (2) PZT as a transmitter and a receiver, and (3) PZT as a transmitter and P(VDF-TrFE) as a receiver. It is found that, owing to the great difference in their acoustic and dielectric properties, PZT plates and P(VDF-TrFE) films operate independently at different frequencies, and that, in operation mode (3), the multilayered transducers exhibit broad frequency bandwidth or shorter impulse response characteristics with high sensitivity and high S/N ratio.
- 社団法人応用物理学会の論文
- 1994-05-30
著者
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OHIGASHI Hiroji
Department of Meterials Science and Engineering, Faculty of Engineering, Yamagata University
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Omote Kenji
Department Of Materials Science And Engineering Faculty Of Engineering Yamagata University
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Park K‐s
Samsung Advanced Inst. Technol. Kyung Gi Kor
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Li Guorong
Department Of Materials Science And Engineering Faculty Of Engineering Yamagata University
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Li Guorong
Department Of Biology Shandong Teachers' University
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Omote K
Yamagata Univ. Yonezawa Jpn
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PARK Kang-Sik
Department of Materials Science and Engineering, Faculty of Engineering, Yamagata University
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Ohigashi Hiroji
Department Of Materials Science And Engineering Faculty Of Engineering Yamagata University
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Ohigashi Hiroji
Department of Material Science and Engineering, Yamagata University, Yonezawa 992-8510, Japan
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