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Keywords:

  • dewetting;
  • phase separation;
  • polymer blend film;
  • self-organization;
  • pattern formation
Thumbnail image of graphical abstract

An ordered array of droplets is self-organized and each droplet possesses a PS kernel surrounded by a PMMA rim. The formation of a regular pattern depends on the initial thickness of the polymer film and the interstitial separation of the excavated holes on the substrate; a scaling relation has been observed. This effect suggests that a low-cost and convenient approach to generate regular polymer structures over a large area can be achieved.