Abstract: A method of forming a monolithic electron optics component includes providing a dual-nozzle printing head having first and second printing nozzles, heating the dual-nozzle printing head to a desired temperature so that both the first nozzle and the second nozzle are heated to substantially the same, desired temperature, extruding a non-conductive filament material through the first nozzle, and withdrawing a conductive filament material through the second nozzle to form a device component. The desired temperature is typically above a melting temperature of the conductive filament material, above the melting temperature of the non-conducting filament material and lower than the temperature at which the printed device component or object sags under its own weight after printing and bleeding of the non-conducting filament material over the conducting filament material occurs.

Abstract: Systems and methods for obtaining fast, spin-polarized electrons from an edge or tip or cusp of a target material, e.g., a sharp GaAs crystal edge or tip, or a cusp, which naturally incorporates optical reversibility. A source of fast spin-polarized electrons may include a target material including a sharp tip or tip portion or a sharp edge or a cusp, the tip or tip portion including at least two intersecting edges, and a pulsed light source configured to emit one or more light pulses focused on the sharp tip or tip portion or the sharp edge or the cusp to thereby induce emission of spin-polarized electrons from the sharp tip or tip portion or the sharp edge or the cusp of the target material.

Abstract: Systems and methods for obtaining fast, spin-polarized electrons from an edge or tip or cusp of a target material, e.g., a sharp GaAs crystal edge or tip, or a cusp, which naturally incorporates optical reversibility. A source of fast spin-polarized electrons may include a target material including a sharp tip or tip portion or a sharp edge or a cusp, the tip or tip portion including at least two intersecting edges, and a pulsed light source configured to emit one or more light pulses focused on the sharp tip or tip portion or the sharp edge or the cusp to thereby induce emission of spin-polarized electrons from the sharp tip or tip portion or the sharp edge or the cusp of the target material.

Abstract: A method of forming a monolithic electron optics component includes providing a dual-nozzle printing head having first and second printing nozzles, heating the dual-nozzle printing head to a desired temperature so that both the first nozzle and the second nozzle are heated to substantially the same, desired temperature, extruding a non-conductive filament material through the first nozzle, and withdrawing a conductive filament material through the second nozzle to form a device component. The desired temperature is typically above a melting temperature of the conductive filament material, above the melting temperature of the non-conducting filament material and lower than the temperature at which the printed device component or object sags under its own weight after printing and bleeding of the non-conducting filament material over the conducting filament material occurs.