Materials are provided that can be used for electromagnetic interference (EMI) shielding, and methods of fabricating the same and methods of using the same are also provided. Polymer-based fiber thin films can have superior electrical conductivity and excellent EMI shielding efficiency while being ultra-flexible and ultra-lightweight. The fiber thin films can be dual polymer thin films and can incorporate quantum dots (QDs) (e.g., magnetic quantum dots) and/or two-dimensional (2D) conductive nanomaterials within a dual polymer matrix comprising a conductive polymer and a nonconductive polymer. The resultant composite thin film can have low density, high porosity, and high electrical conductivity.

Materials are provided that can be used for electromagnetic interference (EMI) shielding, and methods of fabricating the same and methods of using the same are also provided. Polymer-based fiber thin films can have superior electrical conductivity and excellent EMI shielding efficiency while being ultra-flexible and ultra-lightweight. The fiber thin films can be dual polymer thin films and can incorporate quantum dots (QDs) (e.g., magnetic quantum dots) and/or two-dimensional (2D) conductive nanomaterials within a dual polymer matrix comprising a conductive polymer and a nonconductive polymer. The resultant composite thin film can have low density, high porosity, and high electrical conductivity.

There is disclosed a method including chemically converting a first material of a lamellar particle into a compound of the first material. The step of chemical conversion can be performed by a reactant, and the reactant can be in a form of at least one of a solid state, a liquid state, a vapor state, and a plasma state.