Spark discharge anodic oxidation forms porous TiO2 films on titanium implant surfaces. This increases surface roughness and concentration of calcium and phosphate ions and may enhance early osseointegration. To test this, forty 3.75 mm × 13 mm titanium implants (Megagen, Korea) were placed into healed mandibular postextraction ridges of 10 sheep. There were 10 implants per group: RBM surface (c...

Silicon has been machined on lateral resolutions of micrometers and on depth resolutions of nanometers using a recently-developed process based on ion irradiation and electrochemical anodisation. Here we investigate its use as a recording medium for computer generated hologram patterns. We describe the fabrication of both amplitude and phase binary modulated reflective computer generated hologr...

RÉSUMÉ. Des nanotubes de dioxyde de titane (TiO2) ont été fabriqués par anodisation d’une feuille de titane dans une solution d’acide fluorhydrique et ensuite recuits à différentes températures entre 300°C et 600°C. Nous avons cherché dans ce travail la corrélation entre la structure cristalline des nanotubes de TiO2 et leur capacité à photodégrader une solution d’acide orange 7. La couche de n...

We have fabricated spherical and cylindrical concave micro-mirrors in silicon with dimensions from 20 microm to 100 microm. The fabrication process involves standard photolithography followed by large area ion beam irradiation and electrochemical anodisation in a HF electrolyte. After thermal oxidation the silicon surface roughness is less than 2 nm. We also present a multilayer porous silicon ...