Figure 2
From: Natural Source-Based Graphene as Sensitising Agents for Air Quality Monitoring
(a) Schematic illustration of the experimental setup used to evaluate the performance of the N-CNPs and N-GQD-NSs polymer optical fibre sensors. (b) Schematic present of treatment procedure and resultant supernatant and sediment as the sensitizing agents of (c) N-CNPs and (d) N-GQD-NSs overlaid onto the optical fibre.
