Figure 13.

SEM and AFM images of the graphene surface of the same Group 1 chip as in Figure 9 with aggregates of influenza B antigen viruses. (a) SEM image of a 5 × 5 μm² surface. (b) AFM images. On the (left)—graphene surface. On the (right)—profile of the graphene surface along the line in the figure on the (left). The peaks in the graph reveal the aggregates on the graphene surface with a height up to 250–350 nm.