The development of hip joint materials is one of the most challenging problems to prostheses technology in this millennium. Several types of materials have been developed for this purpose. The materials like glass, polymer (poly-tetra-fluoro-ethylene / PTFE or Teflon and ultra-high-molecular-weight-polyethylene or UHMWPE), metal (stainless steel, CoCr alloy, and CoCrMo alloy), ceramics (alumina...

Transparent conducting oxides (TCO) offer the uncommon functional combination of being both transparent and electrically conductive. For this reason, study is concerned with preparation triple heterojunction consisting magnesium oxide, alumina, ITO using a pulsed laser deposition method intensity 3 J. Alumina bulk pellets in propanol were irradiated (Nd:YAG) at wavelength 1064 nm. Laser ablatio...

The effect in the Fabry-Pérot optical interferences of nanoporous anodic alumina films coated with gold is studied as a function of the porosity and of the gold thickness by means of reflectance spectroscopy. Samples with porosities between 14 and 70% and gold thicknesses (10 and 20 nm) were considered. The sputtering of gold on the nanoporous anodic alumina (NAA) films results in an increase o...

A facile procedure is demonstrated to prepare lithium nickel cobalt manganese oxide (NCM) thin film cathodes. Via a sol-gel approach and subsequent spin-coating, crystalline phase-pure cathode layer prepared without any further additives or binders. It shown that the cathodes are ideal model systems access effect of coating layers on electrochemical performance in ion batteries. For this purpos...

Coating the inner surfaces of high-powered plasma processing equipment has become crucial for reducing maintenance costs, process drift, and contaminants. The conventionally preferred alumina (Al2O3) coating been replaced with yttria (Y2O3) due to long-standing endurance achieved by fluorine-based etching; however, continuous increase in radio frequency (RF) power necessitates use alternative m...

Nanostructured alumina thin films were coated on stainless steel by Sol-Gel dip coating method. In order to prevent crack formation, Al2O3 films were kept in a solvent bath immediately after coating to reduce the rate of drying. Effects of calcination temperature and withdrawal speed on structural properties were analyzed using XRD and SEM. Topography and thickness of coat...

The formation of gold microparticles on a silicon substrate through the use of energetic surface plasmons is reported. A laser-assisted plasmonics system was assembled and tested to synthesize gold particles from gold thin film by electrical field enhancement mechanism. A mask containing an array of 200 nm diameter holes with a periodicity of 400 nm was prepared and placed on a silicon substrat...

In this paper, atomic layer deposited (ALD) alumina (Al2O3) has been demonstrated as the structural material for a micro-resonator for the first time. An electrostatically actuated micro-bridge made of chromium (Cr) coated ALD Al2O3 was used as a resonator. The resonator was formed by simple wetand dry-etching processes. The static displacement profile of the micro-resonator under electrostatic...

The paper relates to a catalyst, comprising copperchromium spinel, coated on carrier γ-Al2O3. The effect of preparation conditions on the active component composition and activity behavior of the catalysts is discussed. It was found that the activity of carbon monoxide, DME, formaldehyde and methanol oxidation reaches a maximum at an active component content of 20 – 30 wt. %. Temperature calcin...

Catalyst layers (4-20 microm) of rhodium (1 wt%) supported on alumina, titania, and ceria-zirconia (Ce(0.5)Zr(0.5)O(2)) were coated on stainless-steel corrugated sheets by dip-coating in very stable colloidal dispersions of nanoparticles in water. Catalytic performances were studied for low-temperature (< or = 500 degrees C) steam reforming of propane at a steam to carbon ratio equal to 3 and l...