Institution: | a Research Consortium for Synthetic, Nano-Function Materials Project (SYNAF), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8562, Japan b Seiko Instruments, Inc., 36-1 Takenoshita, Oyama-cho, Sunto-gun, Shizuoka 410-1393, Japan c The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan d Nanotechnology Research Institute (NRI), AIST, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan |