Creeping Discharges at Liquid/solid and Gas/Solid Interfaces: Analogies and Involving Mechanisms

This paper is a synthesis of acquired results by my group on creeping discharges at fluid/solid interfaces during the last two decades. It aims to evidence the analogies between the characteristic parameters of surface discharges propagating on liquid/solid and gas/solid interfaces (namely, shape, stopping length, current/electrical charge, fractal dimension) and the dependency of these characteristics on the same physical parameters. It also evidences the influence of the capacitive effects on these characteristics under different types of voltage waveforms namely AC, DC and lightning impulse voltages.