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Comprehensive Characterization of Electrostatically Actuated Beams

E. K. Chan, K. Garikipati, R. W. Dutton

The entire process of calibrating an electromechanical simulator - identifying relevant parameters, designing and measuring test structures, extracting parameters using detailed electromechanical simulations, and extrapolating the behavior of an actual device - is presented. The simulation model for electrostatically-actuated beams is calibrated to a wide range of electrical and optical test structure measurements and is then used to predict the behavior of more complex dual-bias-electrode structures. Various mechanical discontinuities, and post-buckled pull-in behavior are addressed explicitly. Arbitrary fitting coefficients that limit generality are avoided. The well-characterized behavior of the dual-electrode structures can serve as verification test cases for evaluating coupled electromechanical simulators.