Design and Simulation of Piezoresistive Micro Accelerometers for Wearable Sensing Applications

This paper presents the modeling and simulation of new structure for solid-state three degrees of freedom (3-DOF) micro accelerometer utilizing piezoresistive effect in single crystal Si. The proposed sensor can detect three components of linear acceleration simultaneously. The sensing structure consists of combined cross-beam and surrounding beams and seismic mass. Therefore, this novel proposed sensor is showing good performance than other miniaturized sensor structures reported thus far.