Surface Science

Items from 1 to 20 out of 20 results

article

Pd, Co and Co–Pd clusters on the ordered alumina film on NiAl(110): Contact angle, surface structure and composition

E. Napetschnig, M. Schmid, P. Varga

Surface Science > 2007 > 601 > 15 > 3233-3245

We have investigated the structure and morphology of Co and Pd clusters grown at room temperature on an alumina film on NiAl(110) by scanning tunneling microscopy, low energy ion scattering and Auger electron spectroscopy. We have also studied the clusters after annealing to 300°C and Pd clusters deposited at 300°C. Mixed Co–Pd clusters obtained by sequential deposition at room temperature were also...

article

Molecularly resolved studies of the role of basicity in the reaction of amines with oxygen at a Cu(110) surface

Philip R. Davies, Dyfan Edwards, Martin Parsons

Surface Science > 2007 > 601 > 15 > 3253-3260

The role of basicity in the surface reactions of amines has been investigated in an STM/XPS study of the oxidation of methylamine, ethylamine and 2,2,2-trifluoroethylamine at a Cu(110) surface. Methylamine and ethylamine are strongly basic molecules and for sub monolayer concentrations of oxygen form an amine/oxygen complex characterised by a (3×1) structure. The complex rapidly decomposes at room...

article

Bionanodot monolayer array fabrication for nonvolatile memory application

Atsushi Miura, Yukiharu Uraoka, Takashi Fuyuki, Shinya Kumagai, more

Surface Science > 2007 > 601 > 15 > L81-L85

A polyelectrolyte thin film which was simply spin-coated on a substrate showed the high-density adsorption of bionanodot-accommodated ferritins through electrostatic interaction. Solution pH adjustment facilitated the control of adsorption density to a value grater than 80% of the theoretical maximum density. The formed polyelectrolyte film was very thin and vulnerable like protein, therefore, only...

article

Usage of pattern recognition scheme in kinetic Monte Carlo simulations: Application to cluster diffusion on Cu(111)

Chandana Ghosh, Abdelkader Kara, Talat S. Rahman

Surface Science > 2007 > 601 > 15 > 3159-3168

We have invoked a simple pattern recognition scheme in kinetic Monte Carlo simulations of post-deposition evolution of two dimensional islands on fcc(111) surfaces. On application of the technique to the diffusion of small Cu clusters (8–100 atoms) on Cu(111) we find that, at room temperature, clusters with certain magic numbers show stick-slip type of motion with striking patterns rather than the...

article

Surface energies of the solid solutions between Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W

Hugo O. Mosca, Guillermo Bozzolo

Surface Science > 2007 > 601 > 15 > 3224-3232

The surface energy for different surface orientations of the solid solutions as a function of concentration formed by Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W is computed and analyzed using the BFS method for alloys. Similarities and differences among the different binary alloys are examined in terms of strain and chemical effects.

article

Chemistry of Alanine on Pd(111): Temperature-programmed desorption and X-ray photoelectron spectroscopic study

Feng Gao, Zhenjun Li, Yilin Wang, Luke Burkholder, more

Surface Science > 2007 > 601 > 15 > 3276-3288

The adsorption of alanine is studied on a Pd(111) surface using X-ray photoelectron spectroscopy (XPS) and temperature-programmed desorption (TPD). It is found that alanine adsorbs into the second and subsequent layers prior to completion of the first monolayer for adsorption at ∼250K, while at ∼300K, alanine adsorbs almost exclusively into the first monolayer with almost no second-layer adsorption...

article

IFC

Surface Science > 2007 > 601 > 15 > IFC

article

Degradation of octanethiol self-assembled monolayers from hydrogen-atom exposure: A molecular-scale study using scanning tunneling microscopy

Natalie A. Kautz, Daniel P. Fogarty, S. Alex Kandel

Surface Science > 2007 > 601 > 15 > L86-L90

Octanethiol self-assembled monolayers were exposed to gas-phase hydrogen atoms, and the resulting changes in the order and chemical structure of the surface were monitored using scanning tunneling microscopy (STM). Extensive damage to the monolayer was observed in the form of both dark and bright features in STM images. These changes began along domain boundaries and moved into close-packed regions...

article

The reaction of carbon monoxide with palladium supported on cerium oxide thin films

S.D. Senanayake, J. Zhou, A.P. Baddorf, D.R. Mullins

Surface Science > 2007 > 601 > 15 > 3215-3223

In this study we probe the reaction of carbon monoxide with Pd nanoparticles supported on cerium oxide thin films. With the use of soft X-ray photoelectron spectroscopy (sXPS), and temperature programmed desorption (TPD) the surface intermediates and pathways leading to reaction products of CO on Pd supported on ceria were investigated. When Pd is supported on the stoichiometric CeO ₂ surface...

article

Nanostructure formation by reactions of H2O with pre-adsorbed O on a Ag(110) surface

K. Bobrov, L. Guillemot

Surface Science > 2007 > 601 > 15 > 3268-3275

We present results of an STM investigation of water interaction with an oxygen covered Ag(110) in the case of the O(4×1) reconstructed surface. Regarding the formation of one-layer-thick silver nanostructures previously demonstrated, they point to the key role of the surface temperature at which the water dosing is made. Indeed we measure silver nanostructuring for dosing temperatures lower than 235K...

article

Conformational changes of cyclohexanethiol adsorbed on gold surfaces

Sang-Woo Joo, Hoeil Chung, Kwan Kim, Jaegeun Noh

Surface Science > 2007 > 601 > 15 > 3196-3201

The conformational changes of cyclohexanethiol (CHT) on gold nanoparticles and gold plate surfaces were investigated by means of surface-enhanced Raman scattering. The equatorial chair conformer appeared to be dominant at high bulk concentrations, whereas, both the equatorial and axial chair conformers of CHT were found to exist at low bulk concentrations corresponding to a near monolayer coverage...

article

Pb induced charge accumulation on InAs(111)B

K. Szamota-Leandersson, R. Bugoi, M. Göthelid, G. Le Lay, more

Surface Science > 2007 > 601 > 15 > 3246-3252

The Pb/InAs(111)B interface has been studied by synchrotron radiation photoelectron spectroscopy (SR-PES) of valence band and In4d, As3d and Pb5d core levels. Room temperature deposition of ∼1ML of Pb on InAs(111)B leads to an ordered overlayer that induces a metallic channel at the surface, as seen through a weak emission in the vicinity of the Fermi level. Its narrow localization in reciprocal space...

article

Surface Science > 2007 > 601 > 15 > v-vi

article

Molecular nano-arches on silicon

S. Dobrin

Surface Science > 2007 > 601 > 15 > 3202-3206

The formation of molecular nano-arches on the Si(111)-7×7 surface was modeled using density functional theory (DFT). It has been suggested, based on the calculations, that the arches are formed by molecular dimers of chlorobenzene at near-monolayer coverages. Molecules of the dimer are covalently bound to two silicon adatoms and to each other thereby forming a molecular arch on the surface. The structure...

article

Corrigendum to “Infrared spectroscopy on size-controlled synthesized Pt-based nano-catalysts” [Surf. Sci. 600 (2006) 3502–3511]

E.A. Baranova, C. Bock, D. Ilin, D. Wang, more

Surface Science > 2007 > 601 > 15 > 3289

article

Characterization of Au nano-cluster formation on and diffusion in polystyrene using XPS peak shape analysis

Shaaker Hajati, Vladimir Zaporojtchenko, Franz Faupel, Sven Tougaard

Surface Science > 2007 > 601 > 15 > 3261-3267

XPS peak shape analysis is used as a novel and nondestructive method to study Au nano-cluster growth mechanism on polystyrene (PS) as a function of deposition as well as diffusion and distribution of the nano-clusters in PS as a function of subsequent annealing at temperatures in the range from room temperature to above the glass transition temperature of PS. The Au nano-cluster size and density are...

article

NO dissociation pathways on Rh(100), (110), and (111) surfaces: A comparative density functional theory study

Kai Tian, Xue-Yan Tu, Shu-Shan Dai

Surface Science > 2007 > 601 > 15 > 3186-3195

The chemisorption and dissociation pathways of NO on the Rh(100), (110), and (111) surfaces are studied by the plane-wave density functional theory (DFT) with CASTEP program. In addition, the electronic and geometrical effects that affect the NO dissociation reactions have been investigated in detail. The calculation results are presented as following: The effective activation energies of the best...

article

Nanowedge island formation on Mo(110)

I.V. Shvets, S. Murphy, V. Kalinin

Surface Science > 2007 > 601 > 15 > 3169-3178

The deposition of ultrathin Fe films on the Mo(110) surface at elevated temperatures results in the formation of distinctive nanowedge islands. The model of island formation presented in this work is based on both experiment and DFT calculations of Fe adatom hopping barriers. Also, a number of classical molecular dynamics simulations were carried out to illustrate fragments of the model. The islands...

article

Structural evolution at the initial growth stage of perylene on Au(111)

L. Gao, J.T. Sun, Z.H. Cheng, Z.T. Deng, more

Surface Science > 2007 > 601 > 15 > 3179-3185

We report on the structural evolution at the initial growth stage of perylene thin films on Au(111) surface. Scanning tunneling microscopy and spectroscopy have been employed to investigate the structural and electronic properties at 78K. Rapid molecular diffusion was observed at low submonolayer coverage. Molecules form an ordered structure at monolayer coverage. For the second layer, impinging molecules...

article

Auger electron spectroscopic study of the surface oxidation of uranium–niobium alloy {U–6wt.% Nb} in a UHV environment containing primarily H2, H2O and CO

C.M. Younes, G.C. Allen, Z. Embong

Surface Science > 2007 > 601 > 15 > 3207-3214

Auger electron spectroscopy has been used to study the surface oxidation of a uranium–niobium alloy, U–6wt.% Nb, in a UHV environment containing primarily H ₂ , H ₂ O and CO. For comparison, the reaction of the oxidative species with pure uranium and niobium metals has also been investigated. The observed changes of the shape and position of the Auger transition peaks for U, Nb and...

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15
Volume:
601
Year:
2007

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Keywords

SCANNING TUNNELING MICROSCOPY (4)
STM (3)
CHEMISORPTION (2)
GOLD (2)
PALLADIUM (2)
SURFACE CHEMICAL REACTION (2)
2D ISLANDS (1)
ACCUMULATION LAYER (1)
ACTIVATION ENERGY (1)
AG(110) (1)
ALANINE (1)
ALKANETHIOLS (1)
ALUMINA (1)
AROMATICS (1)
ATOM–SOLID REACTIONS (1)
AUGER ELECTRON SPECTROSCOPY (1)
AUGER ELECTRON SPECTROSCOPY (AES) (1)
BIOTECHNOLOGY (1)
CAGE PROTEIN (1)
CARBON MONOXIDE (1)
CERIUM (1)
CHLOROBENZENE (1)
COBALT (1)
COMPUTER SIMULATIONS (1)
CONFORMERS (1)
CONTACT ANGLE (1)
COPPER (1)
CU(110) (1)
CYCLOHEXANETHIOL (1)
DENSITY FUNCTIONAL CALCULATIONS (1)
DENSITY FUNCTIONAL THEORY (DFT) (1)
DIFFUSION (1)
DISSOCIATION PATHWAY (1)
ETHYLAMINE (1)
FERRITIN (1)
FLOATING GATE MEMORY (1)
GOLD NANO-CLUSTERS (1)
GOLD NANOPARTICLES (1)
HYDROGEN-ATOM (1)
INDIUM ARSENIDE (1)
IRON (1)
KINETIC MONTE CARLO (1)
LOW ENERGY ELECTRON DIFFRACTION (LEED) (1)
LOW ENERGY ION SCATTERING (LEIS) (1)
LOW INDEX SINGLE CRYSTAL SURFACES (1)
METHYLAMINE (1)
MOLECULAR BEAM EPITAXY (1)
MOLECULAR NANOSTRUCTURES (1)
MOLYBDENUM (1)
MONOLAYER (1)
MONTE CARLO SIMULATIONS (1)
NANOSTRUCTURES (1)
NANOWEDGES (1)
NIOBIUM (1)
NITROGEN OXIDES (1)
OXIDATION (1)
OXYGEN (1)
PD(111) (1)
PHOTOELECTRON SPECTROSCOPY (1)
POLYELECTROLYTE FILM (1)
POLYSTYRENE (1)
PROTEIN (1)
REACTION AT SURFACES (1)
RHODIUM (1)
SCANNING TUNNELING MICROSCOPY (STM) (1)
SERS (1)
SILICON SURFACE (1)
SINTERING (1)
SOFT X-RAY PHOTOELECTRON SPECTROSCOPY (1)
SURFACE (1)
SURFACE ENERGY (1)
SURFACE OXIDATION (1)
TEMPERATURE PROGRAMMED DESORPTION (1)
TEMPERATURE-PROGRAMMED DESORPTION (1)
THERMAL DESORPTION (1)
THIN FILM STRUCTURES (1)
UHV (1)
URANIUM (1)
URANIUM–NIOBIUM ALLOY (1)
WATER (1)
WORK OF ADHESION (1)
X-RAY PHOTOELECTRON SPECTROSCOPY (1)
XPS (1)
XPS PEAK SHAPE ANALYSIS (1)
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Surface Science

Pd, Co and Co–Pd clusters on the ordered alumina film on NiAl(110): Contact angle, surface structure and composition

Molecularly resolved studies of the role of basicity in the reaction of amines with oxygen at a Cu(110) surface

Bionanodot monolayer array fabrication for nonvolatile memory application

Usage of pattern recognition scheme in kinetic Monte Carlo simulations: Application to cluster diffusion on Cu(111)

Surface energies of the solid solutions between Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W

Chemistry of Alanine on Pd(111): Temperature-programmed desorption and X-ray photoelectron spectroscopic study

IFC

Degradation of octanethiol self-assembled monolayers from hydrogen-atom exposure: A molecular-scale study using scanning tunneling microscopy

The reaction of carbon monoxide with palladium supported on cerium oxide thin films

Nanostructure formation by reactions of H2O with pre-adsorbed O on a Ag(110) surface

Conformational changes of cyclohexanethiol adsorbed on gold surfaces

Pb induced charge accumulation on InAs(111)B

Contents

Molecular nano-arches on silicon

Corrigendum to “Infrared spectroscopy on size-controlled synthesized Pt-based nano-catalysts” [Surf. Sci. 600 (2006) 3502–3511]

Characterization of Au nano-cluster formation on and diffusion in polystyrene using XPS peak shape analysis

NO dissociation pathways on Rh(100), (110), and (111) surfaces: A comparative density functional theory study

Nanowedge island formation on Mo(110)

Structural evolution at the initial growth stage of perylene on Au(111)

Auger electron spectroscopic study of the surface oxidation of uranium–niobium alloy {U–6wt.% Nb} in a UHV environment containing primarily H2, H2O and CO

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