Abstract:
A fluid-dispensing device comprises substrate (212) and a plurality of nozzles (204) formed in the substrate (212). Each nozzle has (204) has an open-ended tip and a fluid-conducting channel (220) between the tip and a source of fluid. A non-conducting spacer is on the substrate (212) and electrically isolates a gate electrode (208) from the substrate (212). The gate electrode is located adjacent to the tip of at least one of the nozzles (204) to effect dispensing of the fluid in that nozzle (204) in response to a voltage applied between the gate electrode (208) and the nozzle (204) or fluid in the nozzle (204). The gate electrode (208) includes a plurality of individually addressable gate electrodes used for selectively actuating nozzles (204).
Abstract:
Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to provide the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.
Abstract:
A fluid-dispensing device comprises substrate (212) and a plurality of nozzles (204) formed in the substrate (212). Each nozzle has (204) has an open-ended tip and a fluid-conducting channel (220) between the tip and a source of fluid. A non-conducting spacer is on the substrate (212) and electrically isolates a gate electrode (208) from the substrate (212). The gate electrode is located adjacent to the tip of at least one of the nozzles (204) to effect dispensing of the fluid in that nozzle (204) in response to a voltage applied between the gate electrode (208) and the nozzle (204) or fluid in the nozzle (204). The gate electrode (208) includes a plurality of individually addressable gate electrodes used for selectively actuating nozzles (204).
Abstract:
Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the substrate. A path extends between each emission site and a source of liquid metal. Each path is coated with a wetting layer of non-oxidizing metal for wetting the liquid metal. Exemplary non-oxidizing metals that may be used to provide the wetting layer include gold and platinum. The wetting layer is sufficiently thin such that some liquid metal is able to flow to each emission site despite any chemical interaction between the liquid metal and the non-oxidizing metal of the wetting layer.