Silicon Onion-Layer Nanostructures Arranged in Three Dimensions


  • This work has been partially financed by the Comunidad Autónoma de Madrid (Project GR/MAT/0430/2004), the Spanish MEC through project MAT-2003-01237, and the EU NoE PhOREMOST contract 511616.


original image

Silicon concentric layers enclosing spherical air cavities is one of the novel topologies created by the method of infiltrating silicon into polymeric self-assembled microstructures. It is shown that by combining silica and silicon CVD it is possible to build up 3D arrangements of multilayered structures (see figure) with a photonic crystal optical response.