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(a) Schematic of self-nucleation of PCL50-b-PDMA180 diblock copolymer followed by sonication of polydisperse cylinders to form uniform seed micelles, TEM micrographs of (b) polydisperse cylinders and (c) seed micelles, and (d) length distribution of seed micelles. Uranyl acetate (1%) was used as a negative stain. Scale bar = 1000 nm.
