Fig. 7
From: Methodology for quantifying particle charge statistics in electric fields of gas insulations
Distribution of adhesive forces between SiO2 particles and the electrode surface. (a–g) Adhesion of a single particle measured at seven different positions on the electrode. (h–k) Adhesion of four different particles, each set at seven different positions. (l) Distribution combining the measurements of all particles and positions. Different magnitudes of the gravitational force are shown as comparison. (m) SEM micrograph showing particle shape and surface.
