1. Device
Research Laboratory, Advanced Research Division, Panasonic Corporation, 3-4 Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0237, Japan
2. Advanced
Institute for Computational Science, RIKEN, QBiC Building B, 6-2-4 Furuedai, Suita, Osaka 565-0874, Japan
3. Institute
for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan