| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10633053 | Optical Materials | 2011 | 7 Pages |
Abstract
⺠The effective refractive index of artificial opals has been modulated through magnesiothermic and wet etching processes. ⺠The magnesiothermic reduction of silica spheres assembled in a fcc lattice produces amorphous silicon/magnesia opals. ⺠Amorphous silicon/magnesia opals can be easily converted in oxidized porous silicon, preserving the ordered structure. ⺠a-Si/MgO opals which could be exploited for the fabrication of other photonic crystals with different symmetry. ⺠The etched structures could be suitable for emitting dye impregnations, taking advantage of the porous structure.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Luca Pallavidino, Marco Liscidini, Alessandro Virga, Angelica Chiodoni, Emiliano Descrovi, Joaquin Cos, Lucio Claudio Andreani, Candido Fabrizio Pirri, Francesco Geobaldo, Fabrizio Giorgis,