There are several methods for fabricating polymer nanocomposites: - Solution Mixing: The polymer and nanoparticles are dissolved in a common solvent, mixed thoroughly, and then the solvent is evaporated. - Melt Mixing: The polymer and nanoparticles are mixed in the molten state, often using an extruder. - In Situ Polymerization: Nanoparticles are dispersed in monomer solutions, and polymerization is initiated to form the nanocomposite.