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In this work thin films of TiO2 have been customized for use as gas sensors, for photocatalytic decomposition of toxic gases, organic compounds in the air and microorganisms, as self-cleaning surfaces, as biomaterials for orthopaedic and oral implants. TiO2 thin films prepared by electron-beam deposition with well defined controlled structure, phase composition, morphology and local surface chemistry...
This paper reports a new method to induce osteogenic differentiation of human embryonic stem cells (hESCs). Singly dissociated hESCs treated with ROCK inhibitor Y27632 were plated on type I fibrillar collagen (FC) coatings and achieved a high rate of survival. After culturing in osteogenic medium for 10 d, several cell colonies developed on the coatings. Cells forming the colonies showed homogenous,...
Nanomaterials are of great interest for a variety of practical applications. To achieve improved performance of nanomaterial-based devices it is essential to understand and modify their surface properties. Here we present an investigation of properties of nanosurfaces of ZnO and TiO2, and discuss their applications in photovoltaics and antibacterial coatings.
TiO2 nanotube layer was prepared by anodic oxidation of commercial pure Ti in aqueous solutions containing 1M (NH4)2SO4 and 0.5 wt% NH4F. The as-anodized layer consists of self-organized TiO2 nanotubes with amorphous structure, which transforms to anatase after annealing at 450 ??C for 3 h. The annealing treatment of the nanotube layer can significantly enhance its hydrophilicity and bioactivity....
DLC and metal/DLC nanocomposites coatings deposited by means of pulsed laser deposition /PLD/ technique, using high power UV nitrogen laser are described. The DLC and M/DLC nanocomposite coatings are deposited on substrates stents made from 316L SS material and NITINOL (NiTi) alloy. The tests and analysis of the morphology-, structure-, physical-, mechanical- electrochemical- and chemical parameters...
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