Trial Fabrication of Needle-Type Hydrophone with Taper-Type Structure using Hydrothermally Synthesized Lead Zirconate Titanate
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概要
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Needle-type hydrophones with taper shaped titanium (Ti) wire were fabricated in order to avoid back echo reflected at the end of Ti wire. We will report the manufacturing process and measured results of their performance in this paper. The fabricated hydrophones with normal straight Ti wire have back echo from the end of Ti wire. On the contrary, it was confirmed that back echo was suppressed in the fabricated hydrophone with taper-shaped Ti wire. Furthermore, we expected that the frequency characteristics of receiving sensitivity with large peaks and dips were improved using taper-shaped Ti wire. Generally, flat frequency characteristics without peaks and dips are desired in hydrophones. However, flat frequency characteristics cannot be observed for the conventional-type hydrophone with normal straight Ti wire. Obvious improvement in the frequency characteristics was not observed in the case of using taper-shaped Ti wire.
- 2008-05-25
著者
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TAKEUCHI Shinichi
Department of Biomedical engineering, Toin University of Yokohama, Center for Advanced Research of B
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Kuribayashi Kurosawa
Department Of Advanced Applied Electronics Interdisciplinary Graduate School Of Science And Engineer
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KIKUCHI Tsuneo
National Institute of Advanced Industrial Science and Technology
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YOSHIOKA Masahiro
National Institute of Advanced Industrial Science and Technology
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Kawashima Norimichi
Department of Biomedical Engineering, Faculty of Engineering, Toin University of Yokohama, Yokohama 225-8502, Japan
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Kuribayashi Kurosawa
Department of Advanced Applied Electronics, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Kikuchi Tsuneo
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8563, Japan
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Yoshimura Kazuho
Department of Biomedical Engineering, Faculty of Engineering, Toin University of Yokohama, Yokohama 225-8502, Japan
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Uchida Takeyoshi
National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8563, Japan
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Takeuchi Shinichi
Department of Biomedical Engineering, Faculty of Engineering, Toin University of Yokohama, Yokohama 225-8502, Japan
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Uchida Takeyoshi
National Metrogy Institute of Japan, National Institute of Advanced Industrial Science and Technology AIST Tsukuba Central
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Kawashima Norimichi
Department of Applied Chemistry, Faculty of Science, Science University of Tokyo
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