16 results on '"Stefano Aime"'
Search Results
2. Solid/liquid coexistence during aging of FUS condensates
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Yi Shen, Anqi Chen, Wenyun Wang, Yinan Shen, Francesco Simone Ruggeri, Stefano Aime, Zizhao Wang, Seema Qamar, Jorge R. Espinosa, Adiran Garaizar, Peter St George-Hyslop, Rosana Collepardo-Guevara, David A. Weitz, Daniele Vigolo, and Tuomas P. J. Knowles
- Abstract
A wide range of macromolecules undergo phase separation, forming biomolecular condensates in living cells. These membraneless organelles are typically highly dynamic, formed in a reversible manner, and carry out important functions in biological systems. Crucially, however, a further liquid-to-solid transition of the condensates can lead to irreversible pathological aggregation and cellular dysfunction associated with the onset and development of neurodegenerative diseases. Despite the importance of this liquid-to-solid transition of proteins, the mechanism by which it is initiated in normally functional condensates is unknown. Here we show, by measuring the changes in structure, dynamics and mechanics in time and space, that FUS condensates do not uniformly convert to a solid gel, but rather that liquid and gel phases co-exist simultaneously within the same condensate, resulting in highly inhomogeneous structures. We introduce two new optical techniques, dynamic spatial mapping and reflective confocal dynamic speckle microscopy, and use these to further show that the liquid-to-solid transition is initiated at the interface between the dense phase within condensates and the dilute phase. These results reveal the importance of the spatiotemporal dimension of the liquid-to-solid transition and highlight the interface of biomolecular condensates as a key element in driving pathological protein aggregation.
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- 2022
3. Impact of Data Granularity and Distribution Network Modeling on the Energy Community Operation
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Andrea Mazza, Stefano Aime, and Gianfranco Chicco
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- 2022
4. Adsorption of Polar Species at Crude Oil-Water Interfaces: the Chemoelastic Behavior
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Ahmed M. Saad, Stefano Aime, Sharath Chandra Mahavadi, Yi-Qiao Song, Maxim P. Yutkin, David Weitz, and Tadeusz W. Patzek
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Electrochemistry ,General Materials Science ,Surfaces and Interfaces ,Condensed Matter Physics ,Spectroscopy - Abstract
We investigate the formation and properties of crude oil/water interfacial films. The time evolution of interfacial tension suggests the presence of short and long timescale processes reflecting the competition between different populations of surface-active molecules. We measure both the time-dependent shear and extensional interfacial rheology moduli. Late-time interface rheology is dominated by elasticity, which results in visible wrinkles on the crude oil drop surface upon interface disturbance. We also find that the chemical composition of the interfacial films is affected by the composition of the aqueous phase that it has contacted. For example, sulfate ions promote films enriched with carboxylic groups and condensed aromatics. Finally, we perform solution exchange experiments and monitor the late-time film composition upon the exchange. We detect the film composition change upon replacing chloride solutions with sulfate-enriched ones. To the best of our knowledge, we are the first to report the composition alteration of aged crude oil films. This finding might foreshadow an essential crude oil recovery mechanism.
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- 2022
5. Diffusion and convection in nature
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Stefano Aime, Shenghua Xu, Alberto Vailati, and Fabrizio Croccolo
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Physics::Fluid Dynamics ,Convection ,Editorial ,Materials science ,Biophysics ,Astrophysics::Solar and Stellar Astrophysics ,General Materials Science ,Surfaces and Interfaces ,General Chemistry ,Mechanics ,Diffusion (business) ,Physics::Atmospheric and Oceanic Physics ,Biotechnology - Abstract
We present the Topical Issue ‘Diffusion and Convection in Nature’.
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- 2021
6. Dynamic Speckle Holography
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David A. Weitz, L. Xiao, M. Sabato, Stefano Aime, Chimie Moléculaire, Macromoléculaire et Matériaux (UMR7167) (C3M), Centre National de la Recherche Scientifique (CNRS)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC), Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS), Harvard University [Cambridge], University of Chicago, and China University of Petroleum
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Field (physics) ,Holography ,Measure (physics) ,General Physics and Astronomy ,02 engineering and technology ,01 natural sciences ,law.invention ,Speckle pattern ,Optics ,law ,0103 physical sciences ,[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Sensitivity (control systems) ,010306 general physics ,Dynamic speckle ,Physics ,[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] ,business.industry ,Scattering ,021001 nanoscience & nanotechnology ,[CHIM.POLY]Chemical Sciences/Polymers ,Fracture (geology) ,0210 nano-technology ,business ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
International audience; We introduce Dynamic Speckle Holography (DSH), a new technique that combines imaging and scattering to measure three dimensional maps of displacements as small as ten nanometers over several centimeters, greatly extending the capabilities of traditional imaging systems. We attain this sensitivity by imaging speckle patterns of light collected at three scattering angles and measuring the decay in the temporal correlation due to local motion. We use DSH to measure the strain field of a colloidal gel undergoing fracture and establish the surprising role of internal tension in driving the fracture.
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- 2021
7. Ouzo phase occurrence with alternating lipo/hydrophilic copolymers in water
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Kana Nishimori, Stefano Aime, François Tournilhac, Makoto Ouchi, Jean-Michel Guigner, Henrique Trevisan, Chimie Moléculaire, Macromoléculaire et Matériaux (UMR7167) (C3M), Centre National de la Recherche Scientifique (CNRS)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)
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[PHYS]Physics [physics] ,Aqueous solution ,Materials science ,Nanoparticle ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Solvent ,chemistry.chemical_compound ,Monomer ,chemistry ,Chemical engineering ,Ouzo effect ,Phase (matter) ,Amphiphile ,Copolymer ,[CHIM]Chemical Sciences ,0210 nano-technology - Abstract
International audience; Selection of monomer couples, ensuring reactivity ratios close to zero, is an effective strategy to induce spontaneous copolymerization into an alternating sequence. In addition, monomer design and customisation of the solvent–monomer interactions open the way to functional copolymers showing molecular self-assembly relevant to their regular amphipathic structure. In this work, we show that the design of comonomers with adequate reactivities and interactions can be used to direct copolymer self-assembly on a mesoscopic scale. We investigate spontaneous formation of nanoparticles through solvent/non-solvent interactions using the so-called “ouzo effect”. In this way, an ouzo diagram was built to determine the operation window for the self-assembly, in aqueous suspensions, of alternating copolymers consisting of vinyl phenol and maleimide units carrying long alkyl-pendant groups (C12H25 or C18H37). Also, investigations were pursued to account for the influence of the lateral lipophilic pendant units on the size and structure of the nanoaggregates formed during one-shot water addition. Structure characterisation by light scattering techniques (DLS and SLS), small-angle neutron scattering (SANS) and transmission electron microscopy (cryo-TEM and TEM) confirmed the self-assembly of copolymer chains into nanoparticles (size range: 60–300 nm), the size of which is affected by the lipophilicity of the alternating copolymers, solvent–water affinity and the solvent diffusion in water. Altogether, we present here the spontaneous ouzo effect as a simple method to produce stable alternating copolymer nanoparticles in water without the addition of stabilizing agents.
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- 2021
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8. Interfacial Viscoelasticity in Crude Oil-Water Systems to Understand Incremental Oil Recovery
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Tadeusz W Patzek, Sharath C. Mahavadi, David A. Weitz, Ahmed M. Saad, Stefano Aime, and Song Yi-Qiao
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Chromatography ,020401 chemical engineering ,Chemistry ,020209 energy ,0202 electrical engineering, electronic engineering, information engineering ,02 engineering and technology ,0204 chemical engineering ,Crude oil ,Viscoelasticity ,Asphaltene - Abstract
Improved oil recovery from asphaltenic oil reservoirs may provide the world with a significant source of lower-cost energy over many decades. However, the mechanisms through which the surface-active components in crude oil, such as asphaltenes and organic acids, affect incremental oil production are still unclear. In this study, we investigate crude oil/water interfacial films using shear and dilational rheology for mechanical properties and Fourier-Transform Infrared Spectroscopy (FTIR) to better understand its molecular species present at the interface that contribute to the development of viscoelastic behaviors. Dilational rheology has proven to be more sensitive to early time development of elasticity. In contrast, shear rheology provided more insights regarding the formation of elastic films at the macroscopic scale and late time interfacial changes. The presence of salts such as sodium chloride in the aqueous phase played a critical role in altering the dynamics of both the rheological properties development and the interfacial tension.
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- 2020
9. The vortex-driven dynamics of droplets within droplets
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M. Lauricella, Mario Milani, Stefano Aime, A. Montessori, F. Bonaccorso, Sauro Succi, Adriano Tiribocchi, David A. Weitz, Tiribocchi, A., Montessori, A., Lauricella, M., Bonaccorso, F., Succi, S., Aime, S., Milani, M., and Weitz, D. A.
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Materials science ,Science ,Flow (psychology) ,Mesoscale meteorology ,General Physics and Astronomy ,FOS: Physical sciences ,computational fluid dynamics ,02 engineering and technology ,Condensed Matter - Soft Condensed Matter ,01 natural sciences ,Article ,General Biochemistry, Genetics and Molecular Biology ,Physics::Fluid Dynamics ,Entropy (classical thermodynamics) ,Fluid dynamics ,0103 physical sciences ,Cluster (physics) ,010306 general physics ,Fluids ,Range (particle radiation) ,Multidisciplinary ,Microchannel ,Soft materials ,Dynamics (mechanics) ,Fluid Dynamics (physics.flu-dyn) ,Physics - Fluid Dynamics ,General Chemistry ,Mechanics ,021001 nanoscience & nanotechnology ,3. Good health ,Vortex ,Soft Condensed Matter (cond-mat.soft) ,0210 nano-technology - Abstract
Understanding the fluid-structure interaction is crucial for an optimal design and manufacturing of soft mesoscale materials. Multi-core emulsions are a class of soft fluids assembled from cluster configurations of deformable oil-water double droplets (cores), often employed as building-blocks for the realisation of devices of interest in bio-technology, such as drug-delivery, tissue engineering and regenerative medicine. Here, we study the physics of multi-core emulsions flowing in microfluidic channels and report numerical evidence of a surprisingly rich variety of driven non-equilibrium states (NES), whose formation is caused by a dipolar fluid vortex triggered by the sheared structure of the flow carrier within the microchannel. The observed dynamic regimes range from long-lived NES at low core-area fraction, characterised by a planetary-like motion of the internal drops, to short-lived ones at high core-area fraction, in which a pre-chaotic motion results from multi-body collisions of inner drops, as combined with self-consistent hydrodynamic interactions. The onset of pre-chaotic behavior is marked by transitions of the cores from one vortex to another, a process that we interpret as manifestations of the system to maximize its entropy by filling voids, as they arise dynamically within the capsule., Comment: Post-peer-review version of an article published in Nature Communications. Movies upon request
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- 2020
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10. Probing shear-induced rearrangements in Fourier space. I. Dynamic light scattering
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Luca Cipelletti, Stefano Aime, Laboratoire Charles Coulomb (L2C), and Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
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Physics ,FOS: Physical sciences ,02 engineering and technology ,General Chemistry ,Condensed Matter - Soft Condensed Matter ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,symbols.namesake ,Classical mechanics ,Fourier transform ,Dynamic light scattering ,Rheology ,Shear (geology) ,Frequency domain ,Displacement field ,symbols ,Soft Condensed Matter (cond-mat.soft) ,Soft matter ,Affine transformation ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
Understanding the microscopic origin of the rheological behavior of soft matter is a long-lasting endeavour. While early efforts concentrated mainly on the relationship between rheology and structure, current research focuses on the role of microscopic dynamics. We present in two companion papers a thorough discussion of how Fourier space-based methods may be coupled to rheology to shed light on the relationship between the microscopic dynamics and the mechanical response of soft systems. In this first companion paper, we report a theoretical, numerical and experimental investigation of dynamic light scattering coupled to rheology. While in ideal solids and simple viscous fluids the displacement field under a shear deformation is purely affine, additional non-affine displacements arise in many situations of great interest, for example in elastically heterogeneous materials or due to plastic rearrangements. We show how affine and non-affine displacements can be separately resolved by dynamic light scattering, and discuss in detail the effect of several non-idealities in typical experiments., 13 pages, 7 figures. First paper of a series of two companion papers. The second companion paper will be posted shortly
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- 2019
11. Novel non-equilibrium steady states in multiple emulsions
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Stefano Aime, Sauro Succi, A. Montessori, David A. Weitz, Marco Lauricella, Adriano Tiribocchi, M. Milani, Tiribocchi, A., Montessori, A., Aime, S., Milani, M., Lauricella, M., Succi, S., and Weitz, D.
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Materials science ,Computational Mechanics ,FOS: Physical sciences ,computational fluid dynamics ,Condensed Matter - Soft Condensed Matter ,Double emulsion ,01 natural sciences ,010305 fluids & plasmas ,Physics::Fluid Dynamics ,Rheology ,0103 physical sciences ,010306 general physics ,Fluid Flow and Transfer Processes ,Cauchy stress tensor ,Mechanical Engineering ,Fluid Dynamics (physics.flu-dyn) ,Physics - Fluid Dynamics ,Mechanics ,Computational Physics (physics.comp-ph) ,Condensed Matter Physics ,Shear rate ,Shear (geology) ,Mechanics of Materials ,Emulsion ,Soft Condensed Matter (cond-mat.soft) ,Shear flow ,Physics - Computational Physics - Abstract
We numerically investigate the rheological response of a non-coalescing multiple emulsion under a symmetric shear flow. We find that the dynamics significantly depends on the magnitude of the shear rate and on the number of the encapsulated droplets, two key parameters whose control is fundamental to accurately select the resulting non-equilibrium steady states. The double emulsion, for instance, attains a static steady state in which the external droplet stretches under flow and achieves an elliptical shape (closely resembling the one observed in a sheared isolated fluid droplet), while the internal one remains essentially unaffected. Novel non-equilibrium steady states arise in a multiple emulsion. Under a low/moderate shear rates, for instance, the encapsulated droplets display a non-trivial planetary-like motion that considerably affects the shape of the external droplet. Some features of this dynamic behavior are partially captured by the Taylor deformation parameter and the stress tensor. Besides a theoretical interest on its own, our results can potentially stimulate further experiments, as most of the predictions could be tested in the lab by monitoring droplets shapes and position over time., Comment: 12 pages, 11 figures
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- 2019
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12. Probing shear-induced rearrangements in Fourier Space. II. Differential Dynamic Microscopy
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Luca Cipelletti, Stefano Aime, Laboratoire Charles Coulomb (L2C), and Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
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Physics ,FOS: Physical sciences ,Differential dynamic microscopy ,02 engineering and technology ,General Chemistry ,Condensed Matter - Soft Condensed Matter ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,0104 chemical sciences ,Classical mechanics ,Shear (geology) ,Rheology ,Dynamic light scattering ,Frequency domain ,Displacement field ,Soft Condensed Matter (cond-mat.soft) ,Soft matter ,Affine transformation ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
We discuss in two companion papers (arXiv:1802.03737 and the present manuscript) how Fourier-space measurements may be coupled to rheological tests in order to elucidate the relationship between mechanical properties and microscopic dynamics in soft matter. In this second companion paper, we focus on Differential Dynamic Microscopy (DDM) under shear. We highlight the analogies and the differences with Dynamic Light Scattering coupled to rheology, providing a theoretical approach and practical guidelines to separate the contributions to DDM arising from the affine and the non-affine part of the microscopic displacement field. We show that in DDM under shear the coherence of the illuminating source plays a key role, determining the effective sample thickness that is probed. Our theoretical analysis is validated by experiments on 2D samples and 3D gels., This is a companion paper to the manuscript arXiv:1802.03737
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- 2018
13. Power law viscoelasticity of a fractal colloidal gel
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Laurence Ramos, Luca Cipelletti, Stefano Aime, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ANR-14-CE32-0005,FAPRES,Précurseurs de la défaillance dans les matériaux mous(2014), and European Project: 607937,EC:FP7:PEOPLE,FP7-PEOPLE-2013-ITN,SUPOLEN(2013)
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Materials science ,Mechanical Engineering ,FOS: Physical sciences ,02 engineering and technology ,Condensed Matter - Soft Condensed Matter ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Power law ,Viscoelasticity ,Light scattering ,Condensed Matter::Soft Condensed Matter ,Colloid ,Fractal ,Dynamic light scattering ,Rheology ,Shear (geology) ,Mechanics of Materials ,0103 physical sciences ,Soft Condensed Matter (cond-mat.soft) ,General Materials Science ,Statistical physics ,010306 general physics ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
Power law rheology is of widespread occurrence in complex materials that are characterized by the presence of a very broad range of microstructural length and time scales. Although phenomenological models able to reproduce the observed rheological features exist, in general a well-established connection with the microscopic origin of this mechanical behavior is still missing. As a model system, this work focuses on a fractal colloidal gel. We thoroughly characterize the linear power law rheology of the sample and its age dependence. We show that at all sample ages and for a variety of rheological tests, the gel linear viscoelasticity is very accurately described by a fractional Maxwell (FM) model, characterized by a power law behavior. Thanks to a unique setup that couples small-angle static and dynamic light scattering to rheological measurements, we show that in the linear regime, shear induces reversible nonaffine rearrangements which might be at the origin of the power law rheology and we discuss the possible relationship between the FM model and the microscopic structure of the gel.Power law rheology is of widespread occurrence in complex materials that are characterized by the presence of a very broad range of microstructural length and time scales. Although phenomenological models able to reproduce the observed rheological features exist, in general a well-established connection with the microscopic origin of this mechanical behavior is still missing. As a model system, this work focuses on a fractal colloidal gel. We thoroughly characterize the linear power law rheology of the sample and its age dependence. We show that at all sample ages and for a variety of rheological tests, the gel linear viscoelasticity is very accurately described by a fractional Maxwell (FM) model, characterized by a power law behavior. Thanks to a unique setup that couples small-angle static and dynamic light scattering to rheological measurements, we show that in the linear regime, shear induces reversible nonaffine rearrangements which might be at the origin of the power law rheology and we discuss the ...
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- 2018
14. Microscopic dynamics and failure precursors of a gel under mechanical load
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Stefano Aime, Laurence Ramos, Luca Cipelletti, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ANR-14-CE32-0005,FAPRES,Précurseurs de la défaillance dans les matériaux mous(2014), and European Project: 607937,EC:FP7:PEOPLE,FP7-PEOPLE-2013-ITN,SUPOLEN(2013)
- Subjects
Multidisciplinary ,Mechanical load ,FOS: Physical sciences ,02 engineering and technology ,Mechanics ,Plasticity ,Condensed Matter - Soft Condensed Matter ,021001 nanoscience & nanotechnology ,01 natural sciences ,Light scattering ,Rheology ,Physical Sciences ,0103 physical sciences ,Shear stress ,Particle ,Soft Condensed Matter (cond-mat.soft) ,Material failure theory ,Deformation (engineering) ,010306 general physics ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
Réf Journal: PNAS 115, 3587 (2018); International audience; Material failure is ubiquitous, with implications from geology to everyday life and material science. It often involves sudden, unpredictable events, with little or no macroscopically detectable precursors. A deeper understanding of the microscopic mechanisms eventually leading to failure is clearly required, but experiments remain scarce. Here, we show that the microscopic dynamics of a colloidal gel, a model network-forming system, exhibit dramatic changes that precede its macroscopic failure by thousands of seconds. Using an original setup coupling light scattering and rheology, we simultaneously measure the macroscopic deformation and the microscopic dynamics of the gel, while applying a constant shear stress. We show that the network failure is preceded by qualitative and quantitative changes of the dynamics, from reversible particle displacements to a burst of irreversible plastic rearrangements.
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- 2018
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15. A stress-controlled shear cell for small-angle light scattering and microscopy
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Guillaume Prévot, Jean-Marc Fromental, Laurence Ramos, Luca Cipelletti, Remi Jelinek, Stefano Aime, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), ANR-14-CE32-0005,FAPRES,Précurseurs de la défaillance dans les matériaux mous(2014), and European Project: 607937,EC:FP7:PEOPLE,FP7-PEOPLE-2013-ITN,SUPOLEN(2013)
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Materials science ,FOS: Physical sciences ,02 engineering and technology ,Condensed Matter - Soft Condensed Matter ,01 natural sciences ,light scattering ,Light scattering ,Viscoelasticity ,law.invention ,Physics::Fluid Dynamics ,Stress (mechanics) ,Optical microscope ,Rheology ,law ,0103 physical sciences ,Shear stress ,Composite material ,custom shear cell ,010306 general physics ,Instrumentation ,Linear stage ,021001 nanoscience & nanotechnology ,Air bearing ,microscopy ,Soft Condensed Matter (cond-mat.soft) ,rheology ,stress-controlled ,0210 nano-technology ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
We develop and thoroughly test a stress-controlled, parallel plates shear cell that can be coupled to an optical microscope or a small angle light scattering setup, for simultaneous investigation of the rheological properties and the microscopic structure of soft materials under an imposed shear stress. In order to minimize friction, the cell is based on an air bearing linear stage, the stress is applied through a contactless magnetic actuator, and the strain is measured through optical sensors. We discuss the contributions of inertia and of the small residual friction to the measured signal and demonstrate the performance of our device in both oscillating and step stress experiments on a variety of viscoelastic materials., 14 pages, 10 figures
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- 2016
16. An efficient scheme for sampling fast dynamics at a low average data acquisition rate
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Ludovic Berthier, Valentin Roger, Luca Cipelletti, Stefano Aime, Adrian-Marie Philippe, Guillaume Prévot, Remi Jelinek, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Matière Molle, Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Services Techniques, Physique Théorique (DPT), ERC Grant AgreementNo. 306845., and ANR-14-CE32-0005,FAPRES,Précurseurs de la défaillance dans les matériaux mous(2014)
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Data processing ,Computer science ,Detector ,ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION ,Sampling (statistics) ,FOS: Physical sciences ,02 engineering and technology ,Condensed Matter - Soft Condensed Matter ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Light scattering ,Particle detector ,Data flow diagram ,Data acquisition ,CMOS ,0103 physical sciences ,Soft Condensed Matter (cond-mat.soft) ,General Materials Science ,010306 general physics ,0210 nano-technology ,Algorithm ,[PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft] - Abstract
We introduce a temporal scheme for data sampling, based on a variable delay between two successive data acquisitions. The scheme is designed so as to reduce the average data flow rate, while still retaining the information on the data evolution on fast time scales. The practical implementation of the scheme is discussed and demonstrated in light scattering and microscopy experiments that probe the dynamics of colloidal suspensions using CMOS or CCD cameras as detectors., Comment: Submitted to J. Phys.: Cond. Matter. 11 pages, 5 figures + Supporting Data (Python software to implement the method described in the manuscript)
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- 2015
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