Research Article

Microphase Separation of a PS-b-PFS Block Copolymer via Solvent Annealing: Effect of Solvent, Substrate, and Exposure Time on Morphology

Figure 4

AFM topography images of PS-b-PFS thin films after exposure to THF for 1 h at room temperature prepared from a 1.0 wt.% solution of the polymer on substrates of (a) Si3N4, (b) SiOxNy (c) Ge, (d) W, (e) polymer brush modified Si, and (f) graphene.
(a)
(b)
(c)
(d)
(e)
(f)