176 research outputs found
From fundamentals to applications of plating additives for Damascene process and 3D-TVS technology
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From self-assembly to Charge Transport with Single Molecules - An Electrochemical Approach
No full textPhysical confinement versus adsorption driven reconstruction: The case of sulfate anion interaction with vicinal Cu(111) surfaces
No full textNano-electrochemistry, i.e., the research of the properties of nano-(structured) electrodes and their influence on
electrochemical processes when immersed inside an electrolyte, represents a hot topic in view of applications in
nano-electronics, electro-catalysis and energy storage devices. The role of physical confinement in the electrochemical fabrication and performances of the respective systems have been recently addressed in the context of
metal-organic networks on surfaces, but rarely of nano-structured bare metal surfaces, for instance, regularly
stepped (vicinal) surfaces. In this work we investigate the interplay between physical confinement and adsorbate
induced restructuring by the electrochemical adsorption of sulfate anions on the flat and two distinctly different
vicinal Cu(111) surfaces. Sulfate adsorption on the flat Cu(111) surface is known to create a long-range ordered
Moir ́e-superstructure with lattice parameters in the 2–4 nm range due to an expansion of the topmost layer of
copper atoms with respect to the underlying crystal planes. This restructuring is also observed on a vicinal Cu
(111) surface whose original terrace width is considerably smaller than the lattice vectors of the sulfate induced
Moir ́e-structure. The results clearly indicate not only that the Moir ́e formation lifts the physical confinement
imposed by the initial terrace width, but also shine more light on the Moir ́e formation process itself. Such
adsorbate induced restructuring, of course, depends on the respective adsorbate – electrode combination, but
must, in principle, always be taken into account in order to understand electrochemical processes at nanostructured (and nano-sized) electrode surfaces
Stable anchoring chemistry for room temperature charge transport through graphite-molecule contacts
No full textRoom temperature molecular electronics get one step closer to reality by exploiting chemical contacts between a single molecule and graphite.</jats:p
Nickel complexes containing oxygen-chelating mesoionic carbenes as easily accessible catalysts for CO2 reduction
No full textElectrochemical oscillation in the additives-assisted copper electroplating: a mechanistic study on the role of intermediate species at the copper/electrolyte interface
No full textFrom In Situ towards In Operando Conditions: Scanning Tunneling Microscopy Study of Hydrogen Intercalation in Cu(111) during Hydrogen Evolution
No full textWe used electrochemical scanning tunneling microscopy to study the intercalation of hydrogen into a Cu(111) model electrode under reactive (in operando) conditions. Hydrogen evolution causes hydrogen intermediates to migrate into the copper lattice as function of the applied potential and the resulting current density. This H-inclusion is demonstrated to be reversible. The presence of subsurface hydrogen leads to a significant surface relaxation/reconstruction affecting both the geometric and electronic structure of the electrode surface
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