Structural Evolution of Low-Molecular-Weight Poly(ethylene oxide)-block-polystyrene Diblock Copolymer Thin Film

Figure 1

Optical micrographs of a PEO-b-PS film with initial thickness of 43.9 nm annealed at 393 K for (a) 0 min, (b) 1 min, (c) 2 min, (d) 4 min, (e) 8 min, and (f) 20 min. And (g) radius of hole as a function of annealing time.

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