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This work reports, for the first time, a MEMS testbed platform that not only demonstrates complex energy propagation behaviors in periodic arrays of magnetically coupled mechanical oscillators, but also a technique to alter those behaviors externally, after fabrication of the device. Using the microfabricated oscillator arrays, we show frequency bandgaps and a technique to modify the bandgap response,...
We report a chip-scale electrodynamic synthetic jet actuator that integrates both a coil and a wax-bonded NdFeB permanent magnet using standard silicon micromachining processes. A copper micro-coil and a poly-dimethyl-siloxane (PDMS) diaphragm with the magnet are fabricated onto two different dies. An orifice, through which the jet is synthesized, is laser cut on the coil die. The dies are then assembled...
This paper explores a passive, two-port electromechanical device that employs electrodynamic transduction to yield transformer-like electrical behavior. The device—coined an “electrodynamic transformer” (ET)—comprises two coils that are coupled by their electrodynamic interaction with a strong, static magnet field, supplied by permanent magnets. A prototype structure is built and tested to explore...
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