496546.fig.005a
(a)
496546.fig.005b
(b)
Figure 5: Current response to shorter humidity pulses monitored at: (a) 𝑉 g = 0 and −10 V, (b) 𝑉 g = 1 0  V. Sequence of 2 min humid air flow (H) with 3 min recovery in dry air flow (NH). 𝑉 s d = 6 0 0  mV.