Figure 1From: Resolution enhancement of field asymmetric waveform ion mobility spectrometry (FAIMS) by ion focusing Diagram of the experimental focusing device: 1 - carrier gas; 2 - UV lamp; 3 -focus area; 4,5,6,7,8-focus electrode pairs; 9 - upper substrate plate; 10-lower substrate plate; 11A-upper electrode; 11B-lower electrode; 12 -DC scan compensation voltage; 13 - asymmetric waveform RF voltage; 14 - drift tube; 15 - detection unit. Back to article page