1. Department of Mechanical and Intelligent Engineering, Himeji Institute of Technology, 2167, Shosha, Himeji, Hyogo 671-2201
2. Department of Physics, Faculty of Science and Engineering, Chuo University, Kasuga, Bunkyo-ku, Tokyo 112-8851
3. Faculty of Information Science and Technology, Multimedia University, Ayer Keroh Lama, 75450 Melaka, Malaysia