Laser annealing was employed to trigger the solid-state reaction of a thin Co film (2.5 nm) with undoped Si. A metastable disilicide layer was obtained after one laser pulse close to the melt threshold. Its diffraction pattern, relaxed lattice parameter, and residual resisitivity are consistent with the formation of the defective CsCl structure. Th...
This talk entitled “Temporal variability of EM transfer functions” intend to review the largest possible amount of work, methods and publications related to time lapse issues in EM. Accuracy of EM transfer functions is clearly a key parameter to monitor efficiently subsurface resistivity changes. Accuracy depends on processing schemes, arrays desig...
Abstract Airborne particulate matter (PM) is known to have adverse health effects and is a growing concern in urban areas. Spatial and temporal variability is difficult to assess with the few air quality stations typically available in cities. As an alternative, tree bark acts as a passive captor on which PM is deposited. Magnetic susceptibility me...
Vortex induced vibration (VIV) experienced during flow past a cylinder can reduce equipment performance and in some cases lead to failure. Previous studies have shown that the injection of bubbles in the flow over a cylinder typically leads to a monotonic increase in shedding frequency with void fraction, however, a satisfactory explanation for thi...
International audience
supervisor Marie-Caroline Jullien (department of soft matter)
The impact response of Nickel-based superalloys is still poorly documented with respect to the industrial interest in these materials. Here, laser-driven shocks are used to study and compare the dynamic behavior of Rene 65 superalloy with different microstructures at very high strain rates in the order of 106 s−1. Rene 65 specimens studied here are...
International audience
We investigate the effects of microfaceting on the orientation and interface structure of fcc films on fcc substrates by molecular dynamics simulations and atomic resolution electron microscopy. For (110) substrates, the simulations reveal a misorientation between film and substrate lattices that undergoes a sudden change when interfacial facets ap...
International audience
