A5011200121- Material Dynamics and Properties
- Polymer composites and self-healing
- Digital Holography and Microscopy
- Rheology and Fluid Dynamics Studies
- Structural Analysis of Composite Materials
- Force Microscopy Techniques and Applications
- Advanced Fluorescence Microscopy Techniques
- Microstructure and mechanical properties
- Oxidative Organic Chemistry Reactions
- Lignin and Wood Chemistry
- biodegradable polymer synthesis and properties
- Metal Forming Simulation Techniques
- Textile materials and evaluations
- Metallic Glasses and Amorphous Alloys
- Advanced Surface Polishing Techniques
- Surfactants and Colloidal Systems
- Cellular Mechanics and Interactions
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Photochromic and Fluorescence Chemistry
- Pickering emulsions and particle stabilization
- Photopolymerization techniques and applications
- Seismic Waves and Analysis
- Advanced Polymer Synthesis and Characterization
ESPCI Paris
2022-2025
Université Paris Sciences et Lettres
2022-2025
Laboratoire de Chimie Moléculaire
2024
Centre National de la Recherche Scientifique
2022-2023
University of Milan
2017-2022
Glassy materials rapidly quenched from a liquid to solid state upon flow cessation or cooling solidify in an out-of-equilibrium configuration, trapping residual stresses and retaining the memory of processing conditions for very long times, which compromises their physical characterization can adversely affect operations. Erasing mechanical history encoded disordered constitutes great challenge. Here, we address this problem using experiments particle dynamic simulations case colloidal...
The curing of epoxy-anhydride vitrimers involves anionic copolymerization epoxide and anhydride along with homopolymerization excess epoxide, giving rise to a poly(ester-co-ether) network. By monitoring using infrared spectroscopy in different conditions mapping the presence OH groups, we demonstrate that generation hydroxide necessary for transesterification, exclusively relies on side reactions induced by protic impurities water. To increase yield esters hydroxides, without depressing...
The preparation and reprocessing of an epoxy vitrimer material is performed in a fully biocatalyzed process wherein network formation exchange reactions are promoted by lipase enzyme. Binary phase diagrams introduced to select suitable diacid/diepoxide monomer compositions overcoming the limitations (phase separation/sedimentation) imposed curing temperature inferior than 100 °C, protect ability TL, embedded chemical network, catalyze efficiently (transesterification) demonstrated combining...
We investigate the rheology, microscopic structure, and dynamics of an industrially relevant dispersion made cationic surfactant vesicles, from dilute to concentrated conditions. find that these suspensions exhibit a shear-thinning behavior at relatively low concentrations. At microscale, this corresponds well-defined transition in both marked by appearance peak static structure factor, dynamics, which slow down develop two-step decay correlation functions. This low-concentration is...
Particle-tracking microrheology (PT-$\ensuremath{\mu}\mathrm{r}$) exploits the thermal motion of embedded particles to probe local mechanical properties soft materials. Despite its appealing conceptual simplicity, PT-$\ensuremath{\mu}\mathrm{r}$ requires calibration procedures and operating assumptions that constitute a practical barrier wider application. Here we demonstrate differential dynamic microscopy (DDM-$\ensuremath{\mu}\mathrm{r}$), tracking-free approach based on multiscale,...
We combine a strain-controlled cell with bright-field optical microscopy to unveil the microscopic motion of cyclically sheared soft materials.
Direct observation of the microscopic material structure and dynamics during rheological shear tests is goal rheo-microscopy experiments. Microscopically, they shed light on many mechanisms processes that determine mechanical properties at macroscopic scale. Moreover, permit for determination actual deformation field, which particularly relevant to assess banding or wall slip. While sample probing achieved by a variety custom commercial instruments, possibility performing quantitative...
We study the yielding transition in soft jammed materials under oscillatory shear, employing a novel methodology that combines rheological measurements with detailed dynamical observations. This method provides comprehensive view of intricate interactions between macroscopic mechanical behavior, mesoscopic deformation patterns, and microscopic dynamics during yielding. Our findings reveal two distinct behaviors: at one end, smooth, uniform transition, characterized by homogeneous strain...