1. MPA-11: Materials Synthesis and Integrated Devices, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
2. National Security Education Center, Los Alamos National Laboratory, New Mexico Consortium, Los Alamos, New Mexico 87545, United States
3. Fuel Cell Research Center, Korea Institute of Energy Research, Daejeon 34129, Korea
4. National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States