Enhancing Sensitivity in Piezoelectric Micro Cantilever Designs Using Stress Concentration Regions for Label Free Detection

The focus of this research project is to enhance cantilever beam designs for biosensing applications by including Stress Concentration Regions (SCRs).The stress distribution across several cantilever beam designs was determined by simulating them using COMSOL Multiphysics.The earliest designs were developed utilizing Polyvinylidene fluoride (PVDF) to showcase improved sensitivity for mechanical detection without the need for labels in biosensor applications.The analysis of cantilever beams involves the examination of their eigenfrequency and stationary behavior in the context of piezoelectric effect physics.An analysis is conducted on several cantilever beam structures to determine the most appropriate one.In this analysis, the various beams are exposed to an identical mechanical force, and their respective displacements, potential voltage, von Mises stress, and eigenfrequencies are examined.