Showing papers in "Applied Surface Science in 1999"

TL;DR: The preferential sputtering of S from bulk MoS2 standard samples exposed to 3 keV Ar+ ion bombardment has been studied by XPS as mentioned in this paper, where the altered layer extends to a depth of 3.8 nm and is proposed to consist of a single amorphous MoSx phase in which Mo has a varying number of nearest neighbour S atoms.

TL;DR: In this article, the authors used transmission electron microscopy (TEM) and extended X-ray absorption fine structure (EXAFS) to characterize the surface electronic state of the as-prepared samples and found that boron donated electron to nickel in Ni-B alloy, resulting in electron-enrichment of elemental Ni.

TL;DR: In this article, a quantitative X-ray photoelectron spectroscopy (XPS) analysis of deposits formed from a microwave sustained hexamethyl disiloxane (HMDSO) plasma is undertaken.

TL;DR: In this paper, it was shown that with increased time of sputtering, the calculated thickness of TiO 2 and its mole fraction in the oxide film decreases faster than that due solely to thinning of the outermost layer.

TL;DR: In this article, the energy dissipated by the tip-sample interaction was measured by measuring such quantities as oscillation amplitude, frequency, phase shift and drive amplitude, which is applicable to a variety of scanning probe microscopes operating in different dynamic modes.

TL;DR: In this article, atomic force microscopy and molecular mechanics simulations are used to investigate the effects of van der Waals interactions on the atomic structure of adsorbed carbon nanotubes, and the conditions under which the structure of a nanotube will adjust to the topography of the substrate are defined.

TL;DR: In this paper, thin films of copper oxide with thickness ranging from 0.05-0.45 μm were deposited on microscope glass slides by successively dipping them for 20 s each in a solution of 1 M NaOH and then in a mixture of copper complex.

TL;DR: In this article, the surface damage threshold of a -SiO 2 and YLF after single and multiple laser pulse irradiation at a pulse duration of 100 fs and radiation wavelength of 800 nm was investigated.

TL;DR: In this paper, thin films of tungsten oxide were deposited on SnO2:F coated glass using pulsed laser deposition using Raman spectroscopy, and the decrease of the optical band gap was ascribed to a decrease of WO/O-W −W −O ratio correlated to an increase of the cluster size of tengsten oxide with crystallinity.

TL;DR: In this article, the effect of addition of 2[5-(2-pyridyl)-1,2,4-triazol-3-yl] phenol (PPT) on mild steel dissolution in 1 M hydrochloric acid is studied through electrochemical impedance spectroscopy (EIS), potentiodynamic polarisation curves and gravimetric measurements.

TL;DR: In this article, the lignin content in over 250 chemical and mechanical pulp samples with XPS using two different analyses, in order to study the reliability and the reproducibility of the methods.

TL;DR: In this paper, gallium oxide thin films have promising properties for high-temperature-stable and n-type semiconducting properties at high temperatures above 600°C, and they have been used for detecting reducing gases as surface control-type sensors in the temperature range of 500°-850°C.

TL;DR: In this article, the laser ablation efficiency of metals in terms of ablated volume per unit of energy was studied experimentally in air at atmospheric pressure with sharply focused ns, ps and fs laser pulses.

TL;DR: In this article, the bulk and surface characteristics during decomposition of the transition metal sulfates of copper, iron (II), iron (III), nickel, and zinc are investigated utilizing various spectroscopic techniques.

TL;DR: In this article, two different teflon-like films, one obtained by ion sputtering, and the other by plasma polymerization, were used for hot embossing into two different polymers.

TL;DR: In this paper, the dependence of the structural, photoluminescent and cathodolumininescent properties of ZnO thin films deposited by electron beam evaporation on the preparation conditions has been investigated.

TL;DR: In this article, the optimal set of parameters from first principles as a function of the tip-sample system was calculated and it was shown that either the acquisition rate or the signal-to-noise ratio could be increased by up to two orders of magnitude by using stiffer cantilevers and smaller amplitudes than are in use today.

TL;DR: In this article, the authors used X-ray photoelectron spectroscopy (XPS) to analyze the chemical composition of apatite-based coatings and showed the properties of the films after the growth and after the treatment in vitro.

TL;DR: In this paper, the reducibility and characteristics of the supported copper oxide catalysts with various copper loadings were revealed and determined by H2-TPR, CO- TPR, XRD and O 2-TPD, respectively.

TL;DR: In this article, the lattice constants in monosize CeO2−x nanocrystalline particles increase with decreasing particle size, which is well explained by the model that the number of surface oxygen is reduced to half and its nominal valence is not −2 or −0.5 but −1.

TL;DR: In this article, an X-ray photoelectron spectroscopic study was carried out on various carbon-supported Pt-Ru and Pt-Sn catalysts to further elucidate this problem.

TL;DR: In this article, a theoretical study of the quality and range of validity of different numerical and analytical methods to calculate the frequency shift in dynamic force microscopy is presented, and it is demonstrated that the commonly used interpretation of the frequency shifts as a measure for the force gradient of the tip-sample interaction force is only valid for very small oscillation amplitudes and leads to misinterpretations in most practical cases.

TL;DR: In this paper, the effect of ambient gas (O 2 or Ar) and temperature on film quality was investigated and the effects of target morphology and target density on the sizes and the distribution densities of the particulates formed in the deposited thin film.

TL;DR: In this paper, a relationship between a change in surface energy (measured by wetting contact angle) and the adhesion force was demonstrated by atomic force microscopy (AFM).

TL;DR: In this article, the structure, surface composition, electrical resistivity, stress, work function and morphology of the PLD TiC films were characterized as a function of the deposition temperature.

TL;DR: In this paper, an alternative nanofabrication method which relies on self-assembly of colloidal particles into a two-dimensional array on surfaces is reported. But the method is not suitable for use as a lithographic mask.

TL;DR: In this paper, the role of chloride ions in metastable pitting of A516-70 carbon steel was studied based on the statistical analysis of recorded current and potential noise, and it was shown that the amplitude and occurrence frequency of current/potential transients, indicating the initiation of metastable pits, increase with the concentration of chloride ion.

TL;DR: In this paper, a new methodology based on sulfur extraction with appropriate organic solvents and analyses using gas chromatography coupled with mass spectroscopy was developed to identify and quantify elemental sulfur forms at pyrite surfaces.

TL;DR: In this article, the interactions of C60 fullerene and carbon nanotube with Ar ion beam have been studied using XPS and AES in-situ techniques, and the results show that the shake-up peaks of C 1s and the valence band peaks of XPS in a C60 film disappear after it is irradiated with ar ion beam.

TL;DR: In this article, the effect of the annealing temperature between 150 to 400°C and Ar+ ion irradiation time on Zirconium oxide gel films was studied.