A Study On Accelerometers and Sensors for Optimization of Energy Harvesting Techniques in Mems

Abstract

Micro machined Electromechanical Systems (MEMS) have profoundly transformed numerous fields due to their miniature size, low cost, and versatile functionality. Through micro fabrication technology, these small devices include mechanical elements, sensors, actuators and electronics on a single piece of silicon. This is because MEMS are able to improve performance while reducing the size of systems from healthcare to telecommunications. In healthcare, MEMS-based devices enable advanced diagnostics, such as lab-on-chip systems that can perform complex biochemical analyses on a micro-scale. In telecommunications, MEMS improve the performance and reduce the size of components like RF switches and resonators, leading to more efficient and compact devices. Additionally, MEMS technology is crucial in automotive industries for applications like airbag deployment systems and tire pressure monitoring. newlineThe integration of MEMS with electronic systems not only provides significant improvements in terms of precision, reliability, and functionality but also drives innovation across various industries, paving the way for new technological advancements and applications. In this research, the first work contributes significantly to the field by analyzing a surface micromachined accelerometer for energy harvesting applications. Through detailed simulation using COMSOL, various parameters, such as frequency, acceleration, and load impedance were assessed, demonstrating the potential for energy generation from the environment. This research underscores the pivotal role of MEMS in enhancing the functionality and performance of electronic devices across diverse fields, including biomedical and electronics. The second work contributes to the field of energy harvesting by introducing a novel method utilizing MEMS technology for extracting energy from natural sources.By employing GaAs in the design of a capacitive accelerometer, this study demonstrates its superior performance compared to other materials, such as Si, ZnO, and Ge.