21 Result(s)

Chapter and Conference Paper

Surface confined electrochemical compound formation: Incipient sulfidation of Au(1 1 1)

The incipient electrochemical interaction between sulfur and a Au(1 1 1) surface is investigated by kee** the sulfur coverage constant. To this end the ...

C. Schlaup, D. Friebel, P. Broekmann… in Physics and Engineering of New Materials (2009)

Chapter and Conference Paper

AFM and SEM of Wax Crystallisation on Artificial Surfaces Controlled by Temperature and Solvents

Plant surfaces show a great variety of functional structures between micro- to nano-dimensions. Epicuticular wax crystals are very frequent and cause extreme water repellence and are responsible for the self-c...

A. Niemietz, W. Barthlott, K. Wandelt… in EMC 2008 14th European Microscopy Congress… (2008)

Article

Copper dissolution in the presence of a binary 2D-compound: CuI on Cu(100)

Exposing a Cu(100) electrode surface to an acidic and iodide containing electrolyte (5 mM H₂SO₄/1 mM KI) leads to the formation of an electro-compressible/electro-decompressible c(p × 2)-I adsorbate layer at pote...

P. Broekmann, N. T. M. Hai, K. Wandelt in Journal of Applied Electrochemistry (2006)

Article

Structural analysis of wheat wax (Triticum aestivum, c.v. ‘Naturastar’ L.): from the molecular level to three dimensional crystals

In order to elucidate the self assembly process of plant epicuticular waxes, and the molecular arrangement within the crystals, re-crystallisation of wax platelets was studied on biological and non-biological ...

K. Koch, W. Barthlott, S. Koch, A. Hommes, K. Wandelt, W. Mamdouh, S. De-Feyter… in Planta (2006)

Chapter

Highly Ordered Adsorbate Structures on Cu(111) in the Potential Regime of Hydrogen Evolution-An In-Situ STM Study

The potential-dependent atomic structures of a Cu(111) electrode surface exposed to dilute sulfuric acid have been studied by means of in-situ STM.

P. Broekmann, M. Wilms, A. Spaenig… in Thin Films: Preparation, Characterization,… (2002)

Article

STM investigation of step orientation and surface dynamics of Cu(111) in hydrochloric acid electrolyte

× )R30° structure of the adsorbate. The surface structure and dynamics, such as step orientation, step dynamics, and the stability of small copper piles, are markedly influence...

M. Wilms, P. Broekmann, M. Kruft, C. Stuhlmann, K. Wandelt in Applied Physics A (1998)

Article

Atomically resolved AFM investigations of an amorphous barium silicate surface

tetrahedra and terminates with oxygen atoms at the surface. In the range 0.3 nm–1 nm characteristic distances are found, which points to the existence of some medium-range order. The results provide an unique...

W. Raberg, K. Wandelt in Applied Physics A (1998)

Chapter

Relativistic Calculations of Photoemission-and Leed-Intensities for Ordered and Disordered Alloys: Application to Cu₃Pt and Cu₅Pt₃

The description of the electronic structure of binary alloy surfaces is of both fundamental and technological interest. In particular alloys containing platinum offer attractive properties in the field of hete...

B. Willerding, K. Wandelt, J. Braun in Properties of Complex Inorganic Solids (1997)

Chapter

Studies of Alloy Surfaces by Low-Energy Ion Scattering

Low energy ion scattering (LEIS) techniques have been used to study the initial interaction of oxygen with Ni₃Al(100) and Ni₃Al(110), and the structure of Cu/Ru(0001). Dosing Ni₃Al(100) and Ni₃Al(110) surfaces wi...

Y. G. Shen, D. J. O’Connor, R. J. MacDonald, K. Wandelt in Surface Science (1996)

Chapter

Metal-on-Metal Heteroepitaxy and the Influence of a Surfactant: Cu/O/Ru(0001)

Cu-on-Ru(OOOl) has been a suitable model system for metal-on-metal heteroepitaxy for many years because of the immiscibility of the two components. In contrast to most ex-situ studies the present work emphasizes ...

H. Wolter, M. Schmidt, M. Nohlen, K. Wandelt in Surface Science (1996)

Article

Editorial

K. Hieber, M. Landolt, K. Wandelt in Applied Physics A (1993)

Article

Long and short range effect of alkali promoters on metal surfaces: K on Rh(111)

Photoemission of physisorbed noble gases has been used to investigate the variation of the surface potential on a potassium-promoted rhodium (111) surface. The results confirm that the predominant effect of po...

T. V. W. Janssens, K. Wandelt, J. W. Niemantsverdriet in Catalysis Letters (1993)

Chapter

Model Catalysts: The Local Properties of Specific Surface Sites

Real catalyst surfaces are very complex and heterogeneous with a broad distribution of structurally and chemically different sites. In the process of heterogeneous catalysis some of these sites may behave as p...

K. Wandelt in Surface Science (1993)

Article

Editorial

K. Wandelt in Applied Physics A (1992)

Chapter

Structure and Electronic Properties of Metal Surfaces

Due to the asymmetric environment of surface atoms and, hence, the existence of unsaturated, “dangling” bonds at crystal surfaces the properties at the surface are different in almost every respect from those ...

K. Wandelt in Electrified Interfaces in Physics, Chemistry and Biology (1992)

Article

Editorial

K. Wandelt in Applied Physics A (1991)

Article

A fully computerized modular scanning tunneling microscope system

We have developed a fully computerized scanning tunneling microscope (STM) based on an AT-compatible computer equipped with a digital-signal-processor (DSP). All functions of the instrument, such as coarse app...

Th. Fries, C. Becker, M. Böhmer, K. Wandelt in Fresenius' Journal of Analytical Chemistry (1991)

Chapter

Atomic Scale Surface Characterization with Photoemission of Adsorbed Xenon (PAX)

The physical and chemical properties of solid surfaces are strongly influenced — if not dominated — by structural and chemical heterogeneities. For example, structural surface defects like steps, kinks and vac...

K. Wandelt in Chemistry and Physics of Solid Surfaces VIII (1990)

Article

A study of theXVV auger line shape of Fe−Ni alloys

A comparison is performed between theoretical and experimental shapes of theXVV (X=M _2,3 andL ₃) Auger spectra of ferromagnetic Fe _{x ...}

G. Cubiotti, G. Mondio, F. Sacchetti, K. Wandelt in Il Nuovo Cimento D (1986)