This paper presents some recent improvements in the fabrication and control of the Micromechanical Flying Insect (MFI), a centimeter sized aerial vehicle currently being developed at the University of California, Berkeley. We report a lift of 506μN from a single wing, which is sufficient for a 100 mg machine to lift itself off the ground. This lift matches very well with predictions based on qu...

Micromechanical cantilever arrays are used to measure time-resolved adsorption of tiny masses based on protein-ligand interactions. Here, streptavidin-biotin interactions are investigated in a physiological environment. A measurement method is introduced using higher flexural modes of a silicon cantilever in order to enhance the sensitivity of mass detection. Modeling the cantilever vibration i...

A fuzzy logic based multiobjective genetic algorithm (GA) was used to optimize the micromechanical densification modeling parameters such as that of Ashby’s HIP 6.1 for copper powder. In addition to optimizing the 16 main parameters, the GA provides a quantitative measure of the sensitivity of the model to each parameter. While not a sensitivity analysis in the strictest sense, and highly stoch...

This paper, the first of the two parts, presents coupling techniques for implementation of high order narrow-bandwidth bandpass filters from micromechanical resonators using electrical coupling elements. Active and passive coupling elements are used in this work to implement high order resonant systems from individual MEMS resonators. The concept of passive coupling of resonators using capacito...

We investigate the basic creep and fracture response of fine recycled aggregate concrete using nanoscale mechanical characterization modules integrated with nonlinear micromechanical modeling machine learning methods. Fine mortar exhibits a larger volume fraction micropores low-density calcium silicate hydrates compared to natural sand mortar. In return, hard aggregates. The macroscopic logarit...