[1] Khalifa Univ Sci & Technol, Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates
[2] Univ Ioannina, Dept Mat Sci & Engn, Ioannina, Greece
[3] Univ Cambridge, Cambridge Graphene Ctr, Cambridge, England
[4] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
[5] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN USA
[6] Washington Univ, Dept Mech Engn & Mat Sci, St Louis, MO USA
[7] Natl Ctr Sci Res Demokritos, Inst Nanosci & Nanotechnol, Athens, Greece
[8] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA
[9] Arizona State Univ, Eyring Mat Ctr, Tempe, AZ USA
[10] Korea Basic Sci Inst, Ctr Electron Microscop Res, Daejeon, South Korea
[11] TITAN Cement Co SA, Attica, Greece
[12] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore