Figure 5.

The response of the SeOECT devices is described by the sole variables modulation and time constant (a). The scatter plot of modulation against time constant may be indicative of differences between samples and can be used to operate sample separation, clustering, and classification (b). Separation between species can be improved by setting high voltage values and using sensors positioned at the border of the drop, where Marangoni flows are maximized (c). The modulation and time constant variables can be parametrized by voltage (d) and by time (e). The form of these trajectories can be indicative of the time evolution of the system (f).