This lecture covers the design and challenges of folded (serpentine) springs in MEMS devices, focusing on their use in bending and torsion applications. The instructor presents examples of MEMS mirrors for optical cross-connect, discussing the engineering of single-crystal silicon springs for shock tolerance and the failure modes observed at different G-forces.
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Explores the properties of crystalline silicon absorbers in solar cells, discussing absorption coefficients, dispersion effects, and absorption mechanisms in semiconductors.
Explores the preparation of silicon material and wafers for photovoltaic applications, covering topics such as the crystalline silicon standard chain and alternative wafering techniques.
Covers the formation of Al back-surface field in crystalline silicon solar cells, exploring Al melting, Si dissolution, eutectic liquid formation, and more.