1. Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
2. Department of Technical Chemistry I and Center for Nanointegration Duisburg-Essen, University of Duisburg-Essen, Universitätsstrasse 7, D-45141 Essen, Germany
3. Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904-4745, United States
4. School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
5. European Synchrotron Radiation Facility, F-38043 Grenoble, France