A5054471844- Ion-surface interactions and analysis
- Integrated Circuits and Semiconductor Failure Analysis
- Nuclear materials and radiation effects
- Surface Modification and Superhydrophobicity
- Diamond and Carbon-based Materials Research
- Photorefractive and Nonlinear Optics
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- Adhesion, Friction, and Surface Interactions
- Cultural Insights and Digital Impacts
- Education, sociology, and vocational training
- French Urban and Social Studies
- Fluid Dynamics and Heat Transfer
- Metal and Thin Film Mechanics
- Ferroelectric and Piezoelectric Materials
- Nanomaterials and Printing Technologies
- Luminescence Properties of Advanced Materials
- Fusion materials and technologies
- Nuclear Physics and Applications
- Fluid Dynamics and Thin Films
- Dental materials and restorations
- Advanced ceramic materials synthesis
- Advanced Condensed Matter Physics
- Electrohydrodynamics and Fluid Dynamics
- nanoparticles nucleation surface interactions
Université Claude Bernard Lyon 1
2010-2023
Centre National de la Recherche Scientifique
2009-2023
Institut Lumière Matière
2013-2023
Air Liquide (United Kingdom)
2018-2020
Laboratoire de Physique Théorique de la Matière Condensée
2013
European Science Foundation
2005
Groupe de Physique des Matériaux
1992-1997
Universidade Federal do Rio Grande do Sul
1985-1990
Single crystals of \ensuremath{\alpha}-${\mathrm{Al}}_{2}$${\mathrm{O}}_{3}$ were irradiated at Ganil with $^{238}\mathrm{U}$ ions using four different energies: 0.48, 1.72, 2.78, and 3.40 MeV/u. All the irradiations performed a temperature \ensuremath{\approxeq}80 K, fluences extending from 1.2\ifmmode\times\else\texttimes\fi{}${10}^{12}$ to 2.5\ifmmode\times\else\texttimes\fi{}${10}^{12}$ ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}2}$. The samples characterized by Rutherford backscattering...
We investigate the wetting properties of random nanostructured surfaces, with particular attention devoted to phenomenon contact angle hysteresis. For this purpose, solid substrates were initially tailored at a nanometric scale by using swift heavy ion irradiation which produced distribution defects. characterize water on these heterogeneous surfaces an average spreading parameter and weak values areal density defects phi(d), hysteresis grows linearly indicating that pin line individually....
We simulate in two dimensions the wetting behavior of a liquid droplet placed on solid surface structured by regular distribution pillars. For this purpose, as recent study, we used Potts Hamiltonian formalism. focused our investigations transition between regimes characteristic super-repellent property surfaces. determined several physical variables influencing such and also built phase diagrams which different states zone were identified. The happens Cassie–Baxter state (CB) Wenzel state....
The control of surface wetting properties to produce robust and strong hydrophobic oleophobic effects on intrinsically oleophilic surfaces is at the heart many technological applications. In this paper, we explore conditions observe such when roughness substrate fractal nature consists nanofeatures obtained by ion track etching technique. were investigated using eight different liquids with tensions γ varying from 18 72 mN m−1.While it observed that all tested oils readily wet flat...
Objective To evaluate the antimicrobial activity and surface properties of an acrylic resin containing biocide polymer poly (2‐tert‐butylaminoethyl) methacrylate ( PTBAEMA ). Background Several approaches have been proposed to prevent oral infections, including incorporation agents resins. Materials methods Specimens (Lucitone 550) were divided into two groups: 0% (control) 10% . Antimicrobial was assessed by adherence assay one microorganisms, S taphylococcus aureus, treptococcus mutans...
We report on experiments of drop evaporation heated superhydrophobic surfaces decorated with micrometer-sized mushroom-like pillars. analyze the influence two parameters dynamics: solid-liquid fraction and substrate temperature, ranging between 30 80 °C. In different configurations investigated, appears to be controlled by contact line dynamics (pinned or moving). The experimental results show that (i) in pinned regime, depinning angles increase decreasing heating promotes (ii) moving...
Single crystals of $\ensuremath{\alpha}\ensuremath{-}{\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ were irradiated with 20-MeV fullerene beams in a fluence range from $1.0\ifmmode\times\else\texttimes\fi{}{10}^{10}$ to $2.2\ifmmode\times\else\texttimes\fi{}{10}^{11}$ ${\mathrm{C}}_{60}^{+}{\mathrm{}\mathrm{cm}}^{\mathrm{\ensuremath{-}}2}.$ The cluster electronic stopping power ${(dE/dx)}_{e}$ was approximately $62{\mathrm{keV}\mathrm{}\mathrm{nm}}^{\mathrm{\ensuremath{-}}1}.$ Two complementary...
Abstract Single crystals of Al2O3 and LiNbO3 were bombarded at room temperature with either GeV ions (up to 238U) or MeV carbon clusters C60). Depending on the irradiation conditions, electronic stopping power S e ranged from 3 76keV nm−1. Rutherford Backscattering Spectrometry in Channeling geometry (RBS-C) evidenced lattice disorder sample surface which was ascribed high density energy deposited by incident projectile. The damage cross-sections A d varied 350 nm2, highest values being...
Microstructural observations of gallium arsenide single crystals irradiated with a few tens MeV C60 incident clusters (fullerenes) were performed. Normal and grazing incidences investigated. Similar to in the case silicon germanium, cylindrical amorphous tracks whose diameters vary as function projectile energy found. However, for given clusters, track are slightly different from one material another. Also depending on fullerene, is length cylinder that formed along projectile’s path. The...
This manuscript reports an experimental study on surfaces of natural rubber membranes modified by incorporation calcium phosphate particles. In particular, we focused the wettability, a subject for biological aspects. Five (NR) (pure, polymer-bioceramic composite (NR-CaP), and three subjected to simulated body fluid (NR-SBF)) were produced characterized confocal Raman-spectroscopy, AFM, SEM, XPS, results correlated with wetting properties. Seven liquids (water, formamide, di-iodomethane,...
The luminescence of during and irradiation was measured in the 190 - 820 nm wavelength range. evolution with ion fluence exhibits two behaviours : (i) at low fluence, amount centres increases; (ii) high fluences, these defects are completely (F centres) or partially ( annihilated. This phenomenon results from concomittant mechanisms a conversion between F destruction both luminescent species resulting radiation-induced damage. By using simple model we have determined cross sections...