Ultra‐thin graphitic carbon film for high‐power electronics applications

Abstract

A novel explosive-emission cathode capable to produce high-current nanosecond electron bunches and enable tuning in terms of size is proposed and demonstrated to performance fit the particular problem. The record parameters, average diode current 6.5 kA and voltage 410 kV, are achieved by covering a conventional, planar copper cathode with a carbon film being composed of graphitic pyrolytic carbon (GrPyC). The demonstrated plasma expansion velocity and current density are comparable with those obtained with conventional graphitic cathodes. However, in contrast to purely graphite cathodes, the shape, size and surface profile of the proposed hybrid GrPyC/Cu cathodes can be readily adjusted allowing adjustments to fit requirements of a variety of high-current electronic applications.

110th Anniversary: Particle Size Effect on Enhanced Graphitization and Electrical Conductivity of Suspended Gold/Carbon Composite Nanofibers

“…Different forms of carbon are being used in recently engineered applications. For example, graphite, which is one of the forms of elemental carbon in which C atoms arranged in a series of layers of hexagonal rings, usually called graphene layers, are stacked parallel to each other in a three-dimensional crystalline long-range order. , The enhanced conductivity of graphitic carbon is attained due to the existence of a planner “π”-conjugated system. − For this reason, the nanoscopic graphitic carbon shows a potential future in the fabrication of next-generation electronic materials. − …”