Fig. 3: Direct charge measurement using a Faraday cup.
From: Direct observation of electrostatic charging in 3D printing
a Schematic illustration of the setup used to measure the charge of extruded filaments, following 24 hour conditioning in a desiccator at controlled humidity levels. Influence of (b) relative humidity, (c) extrusion temperature, (d) extrusion speed, and (e) the amount of extruded material on the charge detected by the Faraday cup. f Charge acquired by different polymer filaments after extrusion. The experiments seen in (b−e) used ABS as filament. Error bars represent the standard deviation of the electrostatic potential values, averaged over at least three independent experiments per condition.
