There are several methods for synthesizing BNNS: - Exfoliation: This method involves peeling off layers from bulk hexagonal boron nitride (h-BN) using mechanical or chemical means. - Chemical Vapor Deposition (CVD): In this process, gaseous reactants are decomposed on a substrate to form thin BNNS layers. - Ball Milling: This technique employs mechanical force to break down h-BN into nanosheets.