Optical characterization of dynamics inside Si-capped MEMS
Dynamic characterization of MEMS devices to measure and visualize mechanical response is important for product development, trouble shooting and FE model validation. The MSA Micro System Analyzers from Polytec provide fast, accurate optical measurements of out-of-plane (OOP) and in-plane motion (IP). Until now, this has been limited to unpacked devices that are optically accessible. Now, the Polytec MSA-650 IRIS Micro System Analyzer allows even measuring through intact silicon caps on encapsulated microstructures like e.g. inertial sensors, MEMS microphones, pressure sensors and more.
IR capability to measure MEMS dynamics through different layers of Si-capped devices
Real-time out-of-plane response measurement up to 25 MHz (w/o post-processing)
Sub-picometer out-of-plane displacement resolution
Straighforward FE model validation of MEMS in final state
Superior separation of the individual device layers
Stroboscopic video microscope to measure in-plane motion up to 2.5 MHz
Automated system that integrates well for production (probe station compatibility)