Figure 2.

(a) Schematic of epitaxial growth of PCL₅₀-b-PDMA₁₈₀ cylindrical micelles in ethanol from 50 nm seeds. TEM micrographs of cylindrical micelles epitaxially grown from seed micelles with a unimer/seed ratio of (b) 1, (c) 2, (d) 3, (e) 5, (f) 7, and (g) 9. Uranyl acetate (1%) was used as a negative stain. Scale bar = 1000 nm. (h) Length dispersity of cylindrical micelles. (i) Plot showing a linear epitaxial growth regime of cylinders with narrow length dispersities (error bars represent the standard deviation, σ, of the length distribution) in comparison to the theoretical length (dashed line).