El Houssaine El Boudouti is Professor in the Department of Physics at Université Mohammed Premier, Oujda, Morocco. His research interest concerns elementary excitations in composit...voir plusEl Houssaine El Boudouti is Professor in the Department of Physics at Université Mohammed Premier, Oujda, Morocco. His research interest concerns elementary excitations in composite materials such as phononic, photonic, electronic, and magnonic crystals.voir moins