A magnetohydrodynamically driven Helmholtz resonant projector

Laterally Driven Polysilicon Resonant Microstructures

Interdigitated finger (comb) structures are demonstrated to be effective for exciting electrostatically the resonance of polysilicon microstructures parallel to the plane of the substrate. Linear plates suspended by a folded-cantilever truss and torsional plates suspended by spiral and serpentine springs are fabricated from a 2/~m-thick phosphorus-doped low-pressure chemical-vapordeposited (LPC...

A hybrid Rayleigh-Taylor-current-driven coupled instability in a magnetohydrodynamically collimated cylindrical plasma with lateral gravity

Macroscopic Forces driven by Resonant Neutrino Conversion

We show that neutrino oscillations in matter are always accompanied by collective forces on the medium. This effect may produce interesting consequences for the background and the neutrino oscillations themselves. The force is maximal in the case of resonant neutrino conversion in the adiabatic regime. We study here the forces driven by νe − νμ,τ and νe − νs MSW conversion and shortly discuss t...

A stirrer for magnetohydrodynamically controlled minute fluidic networks

Magnetohydrodynamics may potentially provide a convenient means for controlling fluid flow and stirring fluids in minute fluidic networks. The branches of such fluidic networks consist of conduits with rectangular cross sections. Each conduit has two individually controlled electrodes positioned along opposing walls and additional disk-shaped electrodes deposited in the conduit's interior away ...

Long-travel electrothermally driven resonant cantilever microactuators

Silicon microactuators capable of very long travel are described. The design is based on a laterally resonant cantilever, driven by an electrothermal shape bimorph located at the root. Performance characteristics are given for deep structures fabricated in bonded silicon-on-insulator material. Peak-to-peak displacements of more than 500 μm are obtained with cantilevers of 14 mm length, 30 μm wi...