Fig. 3: Characteristics of the sweat VIA sensor.
From: An epifluidic electronic patch with spiking sweat clearance for event-driven perspiration monitoring
a Photograph of the VIA channel and nanomesh electrode. Scanning electron microscope images of b the nanomesh electrode and c CNT-PDMS sponge. d Side-view optical image of the assembled sweat VIA sensor. e Experimental setup for visualizing sweat flow in the sweat VIA sensor and measuring admittance. f Fluorescence micrographs showing clearance of the sweat solution as it contacted the CNT-PDMS sponge. g Measured admittance curve from the sweat VIA sensor during the continuous flow of a 92.7 mM NaCl solution (10,350 μS/cm) at a flow rate of 0.5 μL/min. Solution clearance occurred at each point at which the admittance suddenly decreased (in the red box for one case).
