Role of etching processes in MEMS fabrication

This research examines key techniques for both wet and dry etching to fabricate highly accurate microstructures in microelectromechanical systems (MEMS) devices. The sentence discusses the employment of advanced techniques such as DRIE and plasma etching for precise control over feature geometry. Other techniques, such as metal-assisted etching and wet etching, are also being studied. The paper focuses on the difficulties of achieving consistent etch rates and highlights the importance of process control through parameter adjustment. Sophisticated etching techniques are essential for modern MEMS applications and provide a foundation for future technologies. In brief, the review focuses on advanced MEMS etching techniques, highlighting the equilibrium between precision and cost-effectiveness for device designs across multiple sectors. The manuscript reviews advanced MEMS etching methods, focusing on wet and dry techniques like DRIE and plasma etching, and emphasizes optimizing conditions to enhance etch rates and reliability. This paper reviews MEMS etching techniques, focusing on wet and dry methods, including Deep Reactive Ion Etching (DRIE) and the Bosch process. It highlights key parameters for uniformity and aspect ratios and notes the importance of optimization and mask design for quality microstructures. Advanced etching techniques, including DRIE and plasma etching, are essential for optimizing MEMS microstructures by minimizing defects and enhancing functionality, alongside metal-assisted and wet etching methods. The research emphasizes advanced etching techniques in MEMS fabrication for high-aspect-ratio components, crucial for microfluidics, and highlights the need for precision and cost- efficiency to drive innovations in renewable energy and personalized medicine.