1. King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering (PSE), KAUST Solar Center (KSC), Thuwal 23955-6900, Saudi Arabia
2. Advanced Analysis Unit, Technical Service Division, Research and Development Center, Saudi Aramco, Dhahran 31311, Saudi Arabia
3. University College London (UCL), Department of Physics and Astronomy, London WC1E 6BT, U.K.
4. UCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, U.K.
5. King Abdullah University of Science and Technology (KAUST), Imaging and Characterization Core Lab, Thuwal 23955-6900, Saudi Arabia
6. King Abdullah University of Science and Technology (KAUST), Division of Physical Sciences and Engineering (PSE), KAUST Catalysis Center (KCC), Thuwal 23955-6900, Saudi Arabia