Figure 2

Structure of neat and doped canopies near the lower wall. (a,b) Snapshots of some representative polymers in the neat (a) and doped canopies (b). (c,d) Probability density distribution of the end-to-end distance (c) and the angle between end-to-end vector and the normal vector of the charged solid surface (d) in neat and doped canopies near the lower charged wall. In (d), the probability density is normalized such that a random distribution gives unity at all angles.