生态可持续合成的基于氧化镁的柔性稳定自供能压电可穿戴传感器

Piezoelectric sensors provide an advantage over other transduction methods for the dynamic detection of mechanical stimuli due to its simple device structure and active mechanism of electric charge generation. High sensor sensitivity is essential for precisely detecting minute changes in real-time motion. On the environmentally friendly sustainable note, utilizing bio waste is necessary in the present scenario. Keeping these aspects in check, here a nanofiber piezoelectric sensor made of polyvinylidene fluoride (PVDF) and biosynthesized magnesium oxide (MgO) composite has been developed with the objective of creating a flexible, stable, and self-powered extremely sensitive sensor. We used dried leaves that had been collected from plants and trees (mainly from Leguminosae family) to produce MgO nanoparticles in a sustainable manner. The optimal PVDF and nanofiller composition for detecting several force categories (torsion, shear, tensile, compression) with high reliability has been demonstrated by methodical optimization of MgO concentration and rigorous analytical investigations (vital signal monitoring, posture corrector, expression reader). The device showcased the sensitivity of 1.204 V/N in the force range of 0.0001–78.4 N with 66.8 as performance, while preserving stability in the wide working range of metric units through real-time applications.