Photo-tuning of highly selective wetting in inverse opals.

@article{Singleton2014PhototuningOH,
  title={Photo-tuning of highly selective wetting in inverse opals.},
  author={Thomas A. Singleton and Ian B. Burgess and Bryan A. Nerger and Alexis Goulet-Hanssens and Natalie Koay and Christopher J Barrett and Joanna Aizenberg},
  journal={Soft matter},
  year={2014},
  volume={10 9},
  pages={
          1325-8
        }
}
Crack-free inverse opals exhibit a sharply defined threshold wettability for infiltration that has enabled their use as colourimetric indicators for liquid identification. Here we demonstrate direct and continuous photo-tuning of this wetting threshold in inverse opals whose surfaces are functionalized with a polymer doped with azobenzene chromophores. 
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