1. Ceramic Physics Laboratory, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku,
606-8585 Kyoto, Japan
2. Department
of Orthopedic Surgery, Osaka University Medical School, 2-2 Yamadaoka, Suita
565-0871, Japan
3. Kazuo Inamori
School of Engineering,
New York State College of Ceramics, Alfred University, 2 Pine Street, Alfred, New York 14802-1296, United States
4. Piezotech Japan Ltd., Mukaihata-cho 4, Ichijoji, Sakyo-ku, 606-8326
Kyoto, Japan
5. Department
of Mechanical Engineering, University of Rochester, Rochester, New York 14623,
United States