Journal
NANO LETTERS
Volume 6, Issue 7, Pages 1574-1577Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl060825s
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With in situ scanning force microscopy, we image the ordering of cylindrical microdomains in a thin film of a diblock copolymer melt. Tracking the evolution of individual defects reveals elementary steps of defect motion via interfacial undulations and repetitive transitions between distinct defect configurations on a time scale of tens of seconds. The velocity of these transitions suggests a cooperative movement of clusters of chains. The activation energy for the opening/closing of a connection between two cylinders is estimated.
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