We report on a novel, surfactant free method to achieve nanocrystalline ZnO decoration of an SiO2 nanoparticle at ambient temperature. The size distribution of the naked and decorated SiO2 nanoparticles is measured by dynamic light scattering, and monodisperse distribution is observed for each. The morphology and microstructure of the nanoparticles are explored using atomic force microscopy and high resolution transmission electron microscopy. Investigation of the optical properties of the ZnO ...
Atomic layer deposition (ALD) was used to deposit an alternative dielectric barrier layer for use in radio frequency microelectromechanical systems (rf MEMS). The layer is an alloy mixture of Al2O3 and ZnO and is proposed for use as charge dissipative layers in which the dielectric constant is significant enough to provide a large down-state capacitance while the resistivity is sufficiently low to promote the dissipation of trapped charges. This paper ...
A latching capacitive RF MEMS switch has been successfully designed, fabricated and tested. The switch uses a long thin metal cantilever which is electrostatically held to an upper electrode at the free end and to a lower electrode at the beam root end forming an S-shaped actuator. The upper electrode sits on top of a thin dielectric shell which also serves as part of the package for the device. Slight ...
A thermal plasma is an electrically conductive gas capable of generating temperatures up to 10000 degrees C near its column. The energy generated by plasma arcs has been recently applied to hazardous waste control. The technology involves subjecting hazardous material to high temperatures with the purpose of immobilizing non- volatile chemical species into a non-leachable matrix. Plasma arc vitrification processing is well suited for special waste disposal requirements. In addition ...
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