This study focuses on the fabrication and characterization of PMMA-PEO-SiC-BaTiO₃ nanocomposites for multifunctional nanoelectronics applications. The aim is to develop barium titanate (BaTiO₃) and silicon carbide (SiC) nanostructures doped with a blend of poly-methyl methacrylate (PMMA) and polyethylene oxide (PEO) for use in pressure sensors and electronics. The morphological, structural, and dielectric properties of the nanocomposites were investigated using Fourier transform infrared spectroscopy (FTIR), optical microscopy (OM), and scanning electron microscopy (SEM). Dielectric properties were studied over a frequency range of 100 Hz to 5×10⁶ Hz. The results showed that the dielectric constant (ε') and dielectric loss (ε'') decreased with increasing frequency, while they increased with the ratio of BaTiO₃-SiC nanoparticles. The AC conductivity of the nanocomposites increased with rising frequency and ratio of BaTiO₃-SiC nanoparticles. The nanocomposites were tested for pressure sensor applications in the range of 80–160 bar, showing enhanced dielectric factors with increasing pressure. The morphological, structural, and dielectric properties confirmed that the PMMA-PEO-BaTiO₃-SiC nanocomposites have unique characteristics compared to other nanomaterials, making them significant for the development of advanced microelectronic and optoelectronic devices. The study highlights the potential of PMMA-PEO-BaTiO₃-SiC nanocomposites in various electronic applications due to their excellent pressure sensitivity, flexibility, lightweight, and superior physical and chemical properties. The nanocomposites were fabricated by blending PMMA and PEO with BaTiO₃ and SiC nanoparticles, and their properties were analyzed to evaluate their performance in electronic applications.This study focuses on the fabrication and characterization of PMMA-PEO-SiC-BaTiO₃ nanocomposites for multifunctional nanoelectronics applications. The aim is to develop barium titanate (BaTiO₃) and silicon carbide (SiC) nanostructures doped with a blend of poly-methyl methacrylate (PMMA) and polyethylene oxide (PEO) for use in pressure sensors and electronics. The morphological, structural, and dielectric properties of the nanocomposites were investigated using Fourier transform infrared spectroscopy (FTIR), optical microscopy (OM), and scanning electron microscopy (SEM). Dielectric properties were studied over a frequency range of 100 Hz to 5×10⁶ Hz. The results showed that the dielectric constant (ε') and dielectric loss (ε'') decreased with increasing frequency, while they increased with the ratio of BaTiO₃-SiC nanoparticles. The AC conductivity of the nanocomposites increased with rising frequency and ratio of BaTiO₃-SiC nanoparticles. The nanocomposites were tested for pressure sensor applications in the range of 80–160 bar, showing enhanced dielectric factors with increasing pressure. The morphological, structural, and dielectric properties confirmed that the PMMA-PEO-BaTiO₃-SiC nanocomposites have unique characteristics compared to other nanomaterials, making them significant for the development of advanced microelectronic and optoelectronic devices. The study highlights the potential of PMMA-PEO-BaTiO₃-SiC nanocomposites in various electronic applications due to their excellent pressure sensitivity, flexibility, lightweight, and superior physical and chemical properties. The nanocomposites were fabricated by blending PMMA and PEO with BaTiO₃ and SiC nanoparticles, and their properties were analyzed to evaluate their performance in electronic applications.