Showing papers in "Surface Science in 1995"

TL;DR: In this article, the authors present a consistent picture of some key physical properties determining the reactivity of metal and alloy surfaces, and suggest that trends in reactivities can be understood in terms of the hybridization energy between the bonding and anti-bonding adsorbate states and the metal d-bands (when present).

TL;DR: In this paper, a method for finding free energy barriers for transitions in high-dimensional classical and quantum systems is presented and used to calculate the dissociative sticking probability of H 2 on a metal surface within the transition state theory.

TL;DR: In this article, the structures and relative stabilities of several CeO2 surfaces, and of anion vacancy centers formed on them, were studied using theoretical molecular mechanics methods, and it was shown that the compact (111) surface appears as the most stable one; it is followed by (110), (211) and (100).

TL;DR: In this article, a binary reaction for Al2O3 chemical vapor deposition (2Al (CH3)3 + 3H2O → Al 2O3 + 6CH4) was separated into two half-reactions: (A) AlOH + Al(CH 3)3 → Al-O-Al(CH 4)2 + 2H 2O + 2CH4; (B) Al O-Al (H 3)2+ 3H 2

TL;DR: In situ and ex- situ oxidation studies are carried out on Ge(100) and Ge(111) employing techniques of ultraviolet and X-ray photoelectron spectroscopy (UPS and XPS) as mentioned in this paper.

TL;DR: In this paper, the role of Ru and Sn on methanol oxidation over Pt was investigated for three different systems viz. Pt covered with adatom layers, electro-codeposited PtRu and carbon supported PtRu.

TL;DR: In this paper, the authors show that at about 25 K the oxygen molecules physisorb on the surface of O 2 Pt and two chemisorbed phases are observed at 90 and 135 K, respectively.

TL;DR: In this article, the adsorption of liquid and vapor water on defective and nearly defect-free TiO 2 (110) surfaces has been studied using X-ray photoelectron spectroscopy (XPS) and ultraviolet photoemission spectrum analysis (UPS).

TL;DR: In this article, the authors studied the thermal stability of ultrathin platinum films on a rutile TiO2(110) surface, using low energy ion scattering (LEIS) and X-ray photoelectron spectroscopy (XPS).

TL;DR: Barrier heights of Ag n-Si (111)-7 × 7 and − 1 × 1 Schottky contacts were determined from their currentvoltage and capacitance-voltage characteristics.

TL;DR: In this article, the authors measured thermally induced energy shifts of the Shockley surface states observed around the center \ gG of the surface Brillouin zones on the noble metal (111) surfaces.

TL;DR: In this article, the competitive adsorption of anions and CO on single crystal electrode surfaces is discussed on the basis of electrochemical and in situ FTIR spectroscopic measurements.

TL;DR: In this article, the semi-empirical MO method SINDO1 was used for the investigation of molecular and dissociative adsorption of water at titanium dioxide surfaces rutile (110) and anatase (001).

TL;DR: In this paper, a density-functional pseudopotential approach was used to study the fully relaxed structure, the electron distribution and the electronic density of states of (001) terraces, steps, corners and reverse corners, and of F-centers at these surface features.

TL;DR: In this article, the frictional behavior of mica surfaces with silicon nitride tips has been investigated systematically with the AFM as a function of load, tip geometry, mica lattice orientation and humidity.

TL;DR: In this paper, the atomic layer growth of SiO2 thin films on Si(100) was achieved at temperatures from 600-680 K with reactant pressures from 1-50 Torr.

TL;DR: In this article, the growth of metal overlayers on a model oxide, TiO 2 (110), is reviewed and the authors focus on the very initial stages of overlayer growth and on extracting general trends on metal/metal-oxide interaction by comparing results from different metal overlayer.

TL;DR: In this article, the conversion of di-σ bonded ethylene to ethylidyne on the Pt(111) crystal surface was monitored with infrared-visible sum frequency generation (SFG) in the ν(CH) frequency range.

TL;DR: In this paper, the effects of various non-structural parameters, in particular those involved in the construction of the phase shifts, on the resulting structures of the clean Pt(111) and the Pt( 111)-p(2×2)-O surfaces were investigated.

TL;DR: In this article, surface X-ray scattering measurements of the water distribution perpendicular to a Ag(111)-electrolyte interface in 0.1M NaF at two potentials: +0.52 and −0.23 V from the potential of zero charge (PZC) on the electrode.

TL;DR: In this article, the onset of surface melting at [lcub]00.00.1 [rcub] (basal) and [LCub]10.0[rcub]-11.5°C for hexagonal ice surfaces was studied experimentally by glancing-angle X-ray scattering.

TL;DR: In this article, the authors considered the phenomenon of resonance-assisted hot-electron-induced desorption of adsorbed atoms or molecules, in terms of a semi-classical Gaussian wavepacket model.

TL;DR: In this paper, an in-situ STM was applied to monitor the anion adlattice on Pt(111) in sulfuric acid solution at atomic scale resolution.

TL;DR: In this article, a classical thermodynamic treatment of the melting and freezing of small particles, including the effects of surface-induced order, predicts an energy barrier between a surface melted state and the liquid droplet.

TL;DR: In this article, the same defect creation and healing processes were also observed on a nearly defect-free thermally annealed single-crystal surface using XPS, which was used to confirm the defect type and to quantify the density of Ti3+ defects created.

TL;DR: In this paper, a relation of the minimum flux of Li deposition, at a certain temperature, across the van der Waals planes of MoS2, necessary to prevent the phase transition and to dominate the rigid band intercalation reaction is given as a function of the distance between successive molecular layers and the diffusion coefficient of Li.

TL;DR: In this paper, it was shown that quantum mechanical conductance is observed in nanowires formed by placing two wires of macroscopic dimensions in contact, making them vibrate so they get in and out of contact, and measuring the conductance response of such a system with an oscilloscope.

TL;DR: In this article, first-principles calculations based on density functional theory (DFT) and the pseudopotential method have been used to study the stoichiometric and reduced SnO2(110) surface.

TL;DR: In this article, the results of a study of the thermally activated reactions of ammonia with atomic and molecular oxygen on Pt (111) were presented, and the assignment of reaction mechanisms based on liberation of hydrogen via stepwise N-H bond cleavage by atomic oxygen and OH was made through an EELS analysis of reaction intermediates and a TPDS analysis of NH 3 coverage dependences of product distributions.