This study focuses on the development and application of a hybrid nanocomposite sys-tem based on barium titanate (BaTiO₃) nanoparticles and graphene nanoplates, target-ing its integration into advanced nanoscale devices. The multifunctional nature of Ba-TiO₃, with its well-known ferroelectric and piezoelectric properties, combined with the exceptional electrical conductivity, mechanical strength, and large surface area of gra-phene, makes this composite highly promising for a range of emerging technologies. In particular, the researchers explored the potential of BaTiO₃–graphene nanocomposites in ultrathin piezoelectric resonators, nanogenerators, and surface plasmon resonance (SPR) biosensors. The synergistic interaction between the dielectric and conductive components enhances the overall sensitivity, energy conversion efficiency, and signal transduction capability of the composite. The study further examined the structural integration, stability, and performance of the nanocomposite under various operational conditions, offering insight into its suitability for next-generation micro- and nanoelec-tromechanical systems (MEMS/NEMS), energy harvesting devices, and high-sensitivity biosensing platforms.