1. Graduate School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
2. Yokogawa Electric Corporation, 2-9-32 Nakacho, Musashino, Tokyo 180-8750, Japan
3. The Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku, Tokyo 169-0051, Japan