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Keywords:

  • chirality;
  • circular dichroism;
  • focused ion beam induced-deposition;
  • metamaterials;
  • nanospirals
Thumbnail image of graphical abstract

Chiral metamaterials in the form of metallic nanospirals allow the exploration of chiro-optical phenomena, such as dichroic selection. On page 154, by exploiting a highresolution nanofabrication technique based on focused ion beam-induced deposition, M. Esposito et al. accurately control the 3D evolution of the nanostructures, with the fabricated nano-objects showing a high circular dichroism in the visible range, paving the way towards advanced chiral photonic devices.