Showing papers in "Vacuum in 2007"

TL;DR: In this paper, the influence of silver and copper ion implantation on antibacterial performance and wear and corrosion resistance of three typical medical metals, namely 317L stainless steel, titanium, and Ti-Al-Nb at various ion doses.

TL;DR: In this article, the structure and hydrophilicity of nano-titanium dioxide (TiO2) thin films, deposited by radio frequency magnetron sputtering, annealed at different temperatures, were studied by field emission scanning electron microscopy (SEM), X-ray diffraction (XRD), Xray photoelectron spectroscopy (XPS) and water contact angle methods.

TL;DR: In this article, a study on oxygen plasma functionalization of polyethyleneterephthalate (PET) was presented, where samples were exposed to a weakly ionized, highly dissociated RF oxygen plasma with an electron temperature of 5 eV, a density of positive ions of 8×1015 ǫm−3 and density of neutral oxygen atoms of 4×1021 m−3.

TL;DR: In this paper, the authors investigated the Raman scattering characteristics of intrinsic and doped hydrogenated nanocrystalline silicon films which were prepared by a plasma-enhanced chemical vapor deposition system.

TL;DR: In this paper, the microstructure and phase constitution near the diffusion bonding interface of Mg/Al dissimilar materials are studied using a scanning electron microscope (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM).

TL;DR: In this article, the surface chemistry of plasma-treated and PEG-grafted polydimethyl siloxane (PDMS) substrate has been studied using X-ray photoelectron spectroscopy (XPS).

TL;DR: In this paper, Zn-doped TiO2 films were prepared by means of pulsed DC reactive magnetron sputtering method using Ti and Zn mixed target and the deposition condition was optimized to produce uniform and transparent TiO 2 films.

TL;DR: In this paper, the influence of negative substrate bias, Us, and substrate temperature, Ts, on mechanical properties of superhard titanium diboride (TiB2) coatings was studied.

TL;DR: In this article, the effects of the doping concentration on the structural properties, electrical characteristics and element binding energy in thin films of Mn-doped ZnO with different doping concentration (0.8, 1, 3, 5) were investigated.

TL;DR: In this paper, the influence of substrate temperature on the structural, electrical, and optical properties of ZnO:Ga films was investigated and the X-ray diffraction (XRD) studies showed that higher temperature helps to promote Ga substitution more easily.

TL;DR: In this article, a micro-Pirani gauge is proposed based on the principle that the heat transfer between two surfaces is proportional to the number of molecules transferring the heat, when the mean free path in the gas is larger than the distance between the surfaces.

TL;DR: In this article, the effect of swift heavy ions on the structural and optical properties of polyaniline thin film is investigated, which is attributed to the rearrangement in the ring structure and the formation of Ctriple bond; length of mdash C \equiv C terminals.

TL;DR: In this paper, the authors applied optical emission spectroscopy for the characterization of inductively coupled RF oxygen plasma at pressures between 10 and 300Pa, where the atomic emission intensity showed a maximum when the pressure was about 75-Pa, while molecular band intensity increased monotonically as the total pressure increased.

TL;DR: In this article, the violet (394 and 412 nm) and green (560 and 588 nm) photoluminescence (PL) were observed from the as-deposited and annealed samples.

TL;DR: In this paper, the authors proposed a new approach for the description of the radiation damage build-up in crystals, which is based on the concept of subsequent destabilization of the crystalline phases.

TL;DR: In this paper, hot filament chemical vapour deposition technique was used to grow diamond films from nanometric to micro-crystalline grain sizes Their adhesion levels to a silicon nitride ceramic were compared after Brale tip indentation testing.

TL;DR: In this article, a combined thermal and optical model has been developed to predict the substrate temperature distribution and this model was linked to a structural model to compute stresses and deflections, with particular regard to the annealing of ion implants in silicon and crystallization of amorphous silicon layers on glass substrates.

TL;DR: In this paper, experimental results for structure, morphology, phase composition and measurements of nano-and microhardness, wear resistance, and adhesion of coatings on a Ni base, which were deposited using a plasma jet, before and after pulsed plasma jet and high current electron beam melting are presented.

TL;DR: In this article, the isothermal oxidation behavior of EB-PVD NiCoCrAlY bond coat on nickel based superalloy at different treatment conditions were studied at 1100°C up to 100h.

TL;DR: In this paper, a multilayer CdZnTe thin films of thickness 450-1400nm have been evaporated under vacuum onto unheated glass substrates, using a multi-layer method.

TL;DR: In this paper, the structural and optical changes induced in the films due to post-growth annealing have been systematically studied by Rutherford backscattering (RBS), X-ray diffraction (XRD), Xray reflectivity (XRR), and by optical methods.

TL;DR: In this article, the authors investigated the concentration of defects, its size and structure after tool steel substrate surface pretreatment (polishing, ion etching) as well as after deposition by means of atomic force microscopy (AFM) and scanning electron microscopy.

TL;DR: In this paper, the structure of Pd nanocrystals and interaction between Pd and carbon matrix interface were studied using X-ray diffraction, transmission electron micro-socpy (TEM), atomic force micro-Socpy (AFM), and optical absorption methods.

TL;DR: In this paper, the effect of the annealing temperature on the optical and electrical properties of thin X-ray photoelectron spectroscopy thin films was investigated and it was shown that the charge transfer between different titanium ion contribute greatly to the color, absorption, and electrical resistance of the films.

TL;DR: In this paper, the texture structure, residual stress, and nanoscale multi-layer period thickness of the coatings were determined by X-ray diffraction using both Bragg-Brentano and glancing angle parallel beam geometries.

TL;DR: In this article, the authors investigated the dielectric properties and the AC conductivity of complex materials as a function of frequency and temperature, and they found that the electrical activation energy at various constant frequencies was in the range 0.91 − 0.96 eV.

TL;DR: In this paper, a carbon target with several WS 2 incrusted in the zone of the preferential erosion was used to modify the carbon content in the films, which varied from 29 up to 70 at%.

TL;DR: In this paper, SiOxCyHz thin films were deposited from hexamethyldisiloxane (HMDSO)/O2 mixtures in a parallel plate, capacitively coupled, RF plasma reactor.

TL;DR: In this article, a hot wall deposition of copper indium diselenide (CuInSe2) compound was performed on glass substrates using quartz tubes of different lengths.

TL;DR: In this article, the density of neutral oxygen atoms in microwave plasma using a fiber-optics catalytic probe (FOCP) was determined using a 2.45 GHz microwave generator with an output power up to 1000 W.