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Keywords:

  • superhydrophobic;
  • adhesive;
  • nanowire arrays;
  • calcein;
  • micropillar
Thumbnail image of graphical abstract

Elaborately programmed fluorescent calcein nanowire arrays can be prepared with the aid of superhydrophobic pillar-structured surfaces with high adhesion. Each nanowire can be precisely positioned by well designed tip-structured micropillars, indicating an advance in the methodologies of controlling small molecular 1D organic nanostructures. The as-prepared fluorescent nanowire arrays can serve as a ferrous salt sensing device.