[1] Tokyo Inst Technol, Sch Engn, 4259-G2-28 Nagatsuta,Midori Ku, Yokohama, Kanagawa 2268502, Japan
[2] Osaka Univ, SANKEN, 8-1 Mihogaoka, Osaka, Ibaraki 5670047, Japan
[3] Hitachi Ltd, Instrumentat Innovat Ctr, 1-280 Higashi Koigakubo, Kokubunji, Tokyo 1858601, Japan