Dynamics of contact electrification

Dynamics of contact electrification

Dynamics of contact electrification

A new report on Science Advances developed by Mirco Kaponig and colleagues in physics and nanointegration in Germany, detailed the very basic concept of contact electrification between two metals. In a new experimental method, the researchers followed the charge of a small sphere bouncing on a grounded planar electrode on a timescale down to 1 microsecond. The team noted how the sphere discharged in the moment of contact lasting for 6 to 8 microseconds. At the moment of disruption of the electrical contact, the sphere regained charge far beyond expectations relative to the contact potential difference. The excess charge arose with increasing contact area.
Dynamics of contact electrification