8. Materials and Processes in MEMS Fabrication
The chapter explores essential materials and processes integral to MEMS (Microelectromechanical Systems) fabrication, emphasizing the impact of material choices on device performance. It details various materials, including silicon and its compounds, metals, and polymers, alongside critical microfabrication techniques such as lithography, deposition, and etching. The chapter concludes affirming the significance of both the materials used and the processes applied in achieving high-quality MEMS devices.
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What we have learnt
- Materials selection is crucial in MEMS fabrication affecting reliability and performance.
- Silicon, along with compounds like silicon dioxide and silicon nitride, forms the backbone of MEMS technology.
- Microfabrication techniques, including photolithography and etching, are vital for creating microfeatures in MEMS devices.
Key Concepts
- -- MEMS
- Microelectromechanical Systems, devices integrating mechanical and electrical components at micro-scale.
- -- Photolithography
- A process used to define micro-patterns on substrates through the controlled exposure of light.
- -- Deposition Techniques
- Methods for adding thin layers of material onto substrates, including Physical Vapor Deposition and Chemical Vapor Deposition.
- -- Etching
- A process that selectively removes material from a substrate to create desired structures.
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