Fig. 3From: The aerosol impact spectrometer: a versatile platform for studying the velocity dependence of nanoparticle-surface impact phenomenaDiagram of the NET. VM is the potential applied to the NET mirrors. VEE is the potential applied to the embedded einzel. Separate potentiometer networks with separate HV switches control the two mirror potentials independent of each other, allowing for complete control of trapping potentialsBack to article page