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Keywords:

  • maskless patterning;
  • micropores;
  • metal deposition;
  • gold;
  • copper
Thumbnail image of graphical abstract

By applying an external electric field across a micropore via an electrolyte, metal ions in the electrolyte can be reduced locally onto the inner wall of the micropore, which was fabricated in a silica-covered silicon membrane. This maskless metal deposition on the silica surface is a result of the pore membrane polarization in the electric field.