Development of a flexible piezoelectric biosensor that integrates BaTiO₃–poly(dimethylsiloxane) for posture correction applications

Abstract

The prolonged issue of poor posture due to desk work has led to innovative technologicalremedies. This study shows the development of a flexible piezoelectric biosensor integrating BaTiO3nanoparticles within a Polydimethylsiloxane (PDMS) matrix for practical posture correction. Thebiosensor is capable of real-time posture monitoring and correction by leveraging the piezoelectricproperties of BaTiO3. Comprehensive synthesis and characterization using X-ray diffraction analysis(XRD) and transmission electron microscopy (TEM) validated the ideal particle size and crystallinestructure of the composite. COMSOL Multiphysics simulations showed a peak potential of 0.87 voltsunder mechanical stress, which further confirmed the sensor’s efficiency. Electrical testing revealedthat the sensor with 35 wt.% BaTiO3exhibited a higher output voltage of 0.87 V compared to 0.34 Vfor the sensor with 30 wt.% BaTiO3, emphasizing its exceptional potential for addressing posture-related issues.