1. Equipe: Molécules, Structure et Interactions avec les Surfaces des Matériaux (MSISM), Physics Department, Faculté Poly-Disciplinaire, Université Cadi Ayyad, B.P. 4162, 46000 Safi, Morocco
2. LERMA, College of Engineering, Université Internationale de Rabat, Parc Technopolis Rabat-Shore, 11100 Sala El Jadida, Morocco
3. UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, PO Box 392, 0003 Pretoria, South Africa
4. Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1, PO Box 722, Somerset West, Cape Town 7129, South Africa