1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
2. Faculty of Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8576
3. Kaken Co., Ltd., 1044 Hori, Mito, Ibaraki 310-0903
4. Japan Atomic Energy Agency (JAEA), 4002 Narita, Oarai, Higashi-Ibaraki, Ibaraki 311-1393
5. Department of Radiation Oncology, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba 305-8576
6. Advanced Materials Research Chair, Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
7. Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
8. Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-0827