An absolute method of measuring charge is to use a Faraday Cup (FC) principle. This study
relates to a novel method of measuring charge on a flat substrate, which is coated with
charged powder particles. The substrate consists of an array of FC with different dimensions.
The sensor is manufactured using flame-retardant printed circuit board (PCB) technology.
The objective of this work is to reduce the charge sharing by developing a grounded
shield cup around each conductive cup in the array and accordingly increase cup-toground
capacitance. The results have confirmed that the improved well shielding would
provide a more accurate quantitative charge measurement