TiO2 thin films were prepared with Ti2O3, Ti3O5 and TiO2 as raw materials, by electron-beam evaporation deposition, using O^2- ion beam （ O2 purity up to 99.99% ） as auxiliary means. The crystal structures of the sa...TiO2 thin films were prepared with Ti2O3, Ti3O5 and TiO2 as raw materials, by electron-beam evaporation deposition, using O^2- ion beam （ O2 purity up to 99.99% ） as auxiliary means. The crystal structures of the samples were inspected by the X-ray diffraction （XRD） method, and the evaporation character of warious raw materials was analyzed. Transmittance spectra were measured through a U-3310 spectrophotometer （ wavelength ranging from 200 nm to 900 nm）. The refractive index n and the thickness of films were determined from transmission spectra. The experimental results show that the thin films taking Ti2O3 as their raw material have a strong absorption, when taking Ti3O5 and TiO2 as raw materials, the thin films would have good optical properties. The experiments also show that, the crystal structure of all thin films is amorphous before post-annealing and the Ti3O5 is a congruent evaporation phase in the Ti-O system.展开更多
Surface energy and work of adhesion of titanium oxide related materials were investigated.Titanium oxide(TiOx) films were deposited by electron-beam evaporation system using TiO2 as a source material.The films deposit...Surface energy and work of adhesion of titanium oxide related materials were investigated.Titanium oxide(TiOx) films were deposited by electron-beam evaporation system using TiO2 as a source material.The films deposited by various thickness and growth rate were etched subsequently by different plasma using various gases like Ar and O2.TiOx films were further modified by self-assembled monolayer(SAM)of silanes and ultraviolet(UV)irradiation.The surface modified TiOx films showed a wide range of water contact angles from 6.9°to 75.2°.The surface energies of Titania-related films and their work of adhesion with human blood were varied with different surface modification process.X-ray photoelectron spectroscopy(XPS)revealed that hydroxyl group present on the surface explains the hydrophilicity of the surface modified TiOx films.We also suggest that some surface modified samples can provide an excellent hemocompatible surface from the estimated work of adhesion between the surface modified TiOx samples and human blood.展开更多
文摘TiO2 thin films were prepared with Ti2O3, Ti3O5 and TiO2 as raw materials, by electron-beam evaporation deposition, using O^2- ion beam （ O2 purity up to 99.99% ） as auxiliary means. The crystal structures of the samples were inspected by the X-ray diffraction （XRD） method, and the evaporation character of warious raw materials was analyzed. Transmittance spectra were measured through a U-3310 spectrophotometer （ wavelength ranging from 200 nm to 900 nm）. The refractive index n and the thickness of films were determined from transmission spectra. The experimental results show that the thin films taking Ti2O3 as their raw material have a strong absorption, when taking Ti3O5 and TiO2 as raw materials, the thin films would have good optical properties. The experiments also show that, the crystal structure of all thin films is amorphous before post-annealing and the Ti3O5 is a congruent evaporation phase in the Ti-O system.
基金Fundamental Research Funds for the Central Universities(N090403002)
文摘Surface energy and work of adhesion of titanium oxide related materials were investigated.Titanium oxide(TiOx) films were deposited by electron-beam evaporation system using TiO2 as a source material.The films deposited by various thickness and growth rate were etched subsequently by different plasma using various gases like Ar and O2.TiOx films were further modified by self-assembled monolayer(SAM)of silanes and ultraviolet(UV)irradiation.The surface modified TiOx films showed a wide range of water contact angles from 6.9°to 75.2°.The surface energies of Titania-related films and their work of adhesion with human blood were varied with different surface modification process.X-ray photoelectron spectroscopy(XPS)revealed that hydroxyl group present on the surface explains the hydrophilicity of the surface modified TiOx films.We also suggest that some surface modified samples can provide an excellent hemocompatible surface from the estimated work of adhesion between the surface modified TiOx samples and human blood.
