BUATIER DE MONGEOT , Francesco

The interaction of localized surface plasmon resonances (LSPRs) with the photonic modes in an opal photonic crystal is reported. Gold nanocrescents are evaporated at glancing angles over both microsphere monolayers and artifi cial opals. Microsphere monolayers allow the three localised plasmonic resonances observed in the nanocrescent optical...

The interaction of localized surface plasmon resonances (LSPRs) with the photonic modes in an opal photonic crystal is reported. Gold nanocrescents are evaporated at glancing angles over both microsphere monolayers and artifi cial opals. Microsphere monolayers allow the three localised plasmonic resonances observed in the nanocrescent optical...

We review results relative to the formation of regular nanoscale patterns on metal substrates exposed to defocused ion beam irradiation. Particular emphasis is placed on work which demonstrates the possibility of controllably modifying chemico-physical properties of the material by tailoring the nanoscale morphology during IBS patterning....

No description

No description

No description

Surface etching by ion sputtering can be used to pattern surfaces. Recent studies using the high-spatial-resolution capability of the scanning tunnelling microscope revealed in fact that ion bombardment produces repetitive structures at nanometre scale, creating peculiar surface morphologies ranging from self-affine patterns to...

Here we report on a self-organised approach for the synthesis of transparent metal nanowire arrays based on defocused ion beam sputtering. The nanowire arrays supported on low cost dielectric substrates (glass slides) feature a dual functionality: they exhibit anisotropic conductivity, with sheet resistances which are reduced in comparison to...

Ion sculpting of ultrathin Fe/Ag(001) films induces the self-assembled formation of nanometric surface ripples oriented along the ion beam direction and the corresponding onset of an in-plane uniaxial contribution to magnetic anisotropy. The authors show that fine tuning of the ion dose impinging on the film allows to tailor the in-plane...

We have investigated the possibility of isolating the step-induced in-plane uniaxial magnetic anisotropy in Fe=Ag(001) films on which nanoscale surface ripples were fabricated by the ion sculpting technique. For rippled Fe films deposited on flat Ag(001), the steps created along the ripple sidewalls are shown to be the only source of uniaxial...

The relevant parameters which characterise molecular desorption of O-2-Ag(001) have been determined under isothermal conditions in the low coverage limit, using the beam-Bag method. We find a desorption order n=1.07+/-0.10, a desorption energy E-des=0.50+/-0.12 eV and a pre-exponential factor v(des)1013.3+/-3.5 S-1. Such values compare well...

The relevant parameters which characterise molecular desorption of O-2-Ag(001) have been determined under isothermal conditions in the low coverage limit, using the beam-Bag method. We find a desorption order n=1.07+/-0.10, a desorption energy E-des=0.50+/-0.12 eV and a pre-exponential factor v(des)1013.3+/-3.5 S-1. Such values compare well...

No description

We have investigated the interaction of oxygen with Ag(111) by using a supersonic molecular beam in the impact energy range 93-800 meV. At 105 K, contrary to the results of Carley et al. [Surf. Sci. 238 (1990) L467], we find no evidence for O-2 adsorption even after very high O-2 exposures (similar to 25000 L) indicating that for a clean...

We investigated the dynamics of the adsorption of O-2 on Ag(001) with the supersonic molecular beam technique combined with EEL spectroscopy, TDS and the reflection detector technique. The initial sticking coefficient S-0 was measured as a function of the impact energy and of the angle of incidence of the molecules at crystal temperatures of...

We investigated the dynamics of the adsorption of O-2 on Ag(001) with the supersonic molecular beam technique combined with EEL spectroscopy, TDS and the reflection detector technique. The initial sticking coefficient S-0 was measured as a function of the impact energy and of the angle of incidence of the molecules at crystal temperatures of...

No description