1. Université de Sherbrooke, Laboratoire Nanotechnologies Nanosystèmes (LN2)–CNRS UMI-3463, Institut Interdisciplinaire d’Innovation Technologique, Sherbrooke, J1K OA5 Quebec, Canada
2. King Saud University, College of Sciences, Department of Physics and Astronomy, P.O. Box No. 2455, 11451 Riyadh, Saudi Arabia