Precise Design of Micro-Cantilever Sensor for Biomedical Application

Abstract

This research evaluates the impact of mass loading/perturbations on the characteristics of a micro-size cantilever bio-mass sensor. Design techniques are proposed through the application of the commercial, finite element modelling, and simulation package, i.e., COMSOL multiphysics. A finite element model and resulting simulations are provided for both the static and dynamic operation of a bio-mass sensor. In static mode, the obtained result provides the structural stress, strain, and displacement of a sensor against several mass loading conditions (point, edge, and boundary). In dynamic mode, shifts in the resonant frequencies of the sensor as a function of mass loading are obtained, which is another viable output of the biosensor. The proposed design and modelling techniques offer a guide in the rapid design and development of precise and efficient biomedical instrumentations and/or products.