Margrit Hanbücken

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Three-dimensionally (3D) nanoarchitectured palladium/nickel (Pd/Ni) catalysts, which were prepared by atomic layer deposition (ALD) on high-aspect-ratio nanoporous alumina templates are investigated with regard to the electrooxidation of formic acid in an acidic medium (0.5 M H2SO4). Both deposition processes, Ni and Pd, with various mass content ratios(More)
Nanoporous anodic aluminum oxide (AAO) membranes [ 1 ] can directly be used as fi ltration membranes, photonic crystals, [ 2 ] or biosensors. [ 3 ] However they are mainly employed as templates to prepare a large variety of challenging onedimensional functional nanostructures for applications such as optics, [ 4 ] cell imaging, [ 5 ] energy storage, [ 6 , 7(More)
Palladium nanoparticles are grown on TiO2 nanotubes by atomic layer deposition (ALD), and the resulting three-dimensional nanostructured catalysts are studied for ethanol electrooxidation in alkaline media. The morphology, the crystal structure, and the chemical composition of the Pd particles are fully characterized using scanning and transmission electron(More)
An overview is given on the use of scanning tunneling microscopy (STM) for investigation of the adsorption of hydrogen on Si(111)7 x 7 both at room temperature and at elevated temperature to finally obtain a hydrogen-saturated surface of Si(111). The initial stages are characterized by high reactivity of Si adatoms of the 7 x 7 structure. After adsorption(More)
UNLABELLED We propose a facile and reproducible method, based on ultra thin porous alumina membranes, to produce cm(2) ordered arrays of nano-pores and nano-pillars on any kind of substrates. In particular our method enables the fabrication of conducting polymers nano-structures, such as poly[3,4-ethylenedioxythiophene]:poly[styrene sulfonate] ( PEDOT(More)
Romain Bernard,1 Thomas Leoni,2 Axel Wilson,1 Tony Lelaidier,2 Houda Sahaf,2 Eric Moyen,2 Loı̈c Assaud,2 Lionel Santinacci,2 Frédéric Leroy,2 Fabien Cheynis,2 Alain Ranguis,2 Haik Jamgotchian,2 Conrad Becker,2 Yves Borensztein,1 Margrit Hanbücken,2 Geoffroy Prévot,1,* and Laurence Masson2,† 1CNRS, UMR 7588, Institut des Nanosciences de Paris, F-75005 Paris,(More)
The growth of ultra-thin KCl films on the Si(111)7 × 7 reconstructed surface has been investigated as a function of KCl coverage and substrate temperature. The structure and morphology of the films were characterized by means of scanning tunneling microscopy (STM) under ultra-high vacuum (UHV) conditions. Detailed analysis of the atomically resolved STM(More)
We demonstrate the kinetically controlled growth of one-dimensional Co nanomagnets with a high lateral order on a nanopatterned Ag(110) surface. First, self-organized Si nanoribbons are formed upon submonolayer condensation of Si on the anisotropic Ag(110) surface. Depending on the growth temperature, individual or regular arrays (with a pitch of 2 nm) of(More)
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