Any two methods (i)Physical method. (ii)Chemical method. (iii)Biological method. (iv)Hybrid method. (v)Mechanical Vapour deposition method. (vi)Colloidal Method. (vii)Sol-gel method. (viii)Ball milling method. (ix)Melt mixing method. (x)PVD (Physical Vapour Deposition) method. (xi)Sputtering Method.