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Broadband molecular dynamics simulation of fluid inertial effects in confined Brownian motion
Quentin Thomas, Clara Mefo Sop, Maxime Lavaud +3
Hydrodynamic memory governs Brownian motion over a broad range of timescales, from acoustic wave propagation at short times to diffusive relaxation at long times. While confinement…
Quantitative measurement of fluid inertial effects in confined Brownian motion
Quentin Ferreira, Pablo Palacios-Alonso, Harshit Joshi +3
The hydrodynamic response of Brownian particles in liquids is fundamentally altered by inertial forces arising from unsteady momentum transport in the surrounding fluid. These forc…
Nanostructure of PEGDA-PEG hydrogel membranes and how it controls their permeability
Sixtine de Chateauneuf-Randon, Malak Alaa Eddine, Bruno Bresson +7
The spacial heterogeneity of hydrogels composed of PEGDA and added polymer chains is expected to play a crucial role on their transport properties which can be exploited in filtrat…
Linear poroelastic response of thin permeable gel films
Caroline Kopecz-Muller, Joshua D Mcgraw, Thomas Salez
When a hydrophilic and deformable porous material is immersed in a bath, it may absorb the solvent and expand by several times its volume, thus forming a highly soft and porous hyd…
Polymeric Solvents Control Swelling-Induced Surface Creasing
Zechao Jiang, Zhaoyu Ding, Shaohua Yang +7
Surface creasing in swelling polymer gels is commonly attributed to compressive strain or interlayer mismatch, yet its general control remains unclear. Here we show that solvent po…
Taylor dispersion in a soft tube
Aditya Jha, Masoodah Gunny, Joshua D Mcgraw +2
Diffusion of a solute along a tube is enhanced by hydrodynamic flow, a phenomenon known as Taylor dispersion. In microfluidic applications, the compliance of the tube boundaries mo…
Electrohydrodynamic lubrication theory for an immersed cylinder moving near wall
Anirban Chatterjee, Yacine Amarouchene, Thomas Salez
The free motion of charged colloids within ionic solutions and in the vicinity of charged boundaries, is a phenomenon that occurs in various natural, biological and industrial sett…
Suppressed Rupture of Thin Metal Films via van der Waals Epitaxy
Wenxiang Wang, Jiaxing Wang, Guotong Wang +9
Ultrathin metal films exhibit liquid-like instabilities, rupturing via surface diffusion far below their melting points. This behavior constrains thermal budgets for advanced integ…
A label-free method to quantify early-stage amyloid aggregation via intrinsic phenylalanine fluorescence
Gaëlle Audéoud, Louis Moine, Laura Bonnecaze +5
The aggregation of amyloid-forming peptides is a dynamic, complex process that underlies their diverse biological activities, from physiological functions to disease-associated dys…
Probing molecular-motor forces driving Chlamydomonas gliding motility by holographic microscopy
Nicolas Fares, Elorri Garcia, Ahmad Badr +5
The unicellular microalga Chlamydomonas reinhardtii is a widely used model microswimmer for biophysicists. However, the interest around C. reinhardtii goes beyond its swimming capa…
First-passage statistics of confined colloids
Guirec de Tournemire, Nicolas Fares, Yacine Amarouchene +1
The encounter of diffusing entities underlies a wide range of natural phenomena. The dynamics of these first-passage dynamics are strongly influenced by confining geometries. Confi…
pH-dependent interfacial rheology of polymer membranes assembled at liquid-liquid interfaces using hydrogen bonds
Julien Dupré de Baubigny, Corentin Tregouet, Elena N. Govorun +5
Self-assembly of polymers at liquid interfaces using non-covalent interactions has emerged as a promising technique to reversibly produce self-healing membranes. Besides the assemb…
Brownian motion near a soft surface
Yilin Ye, Yacine Amarouchene, Raphaël Sarfati +2
Brownian motion near soft surfaces is a situation widely encountered in nanoscale and biological physics. However, a complete theoretical description is lacking to date. Here, we t…
Enhanced diffusion over a periodic trap by hydrodynamic coupling to an elastic mode
Juliette Lacherez, Maxime Lavaud, Yacine Amarouchene +2
In many physical systems, degrees of freedom are coupled \emph{via} hydrodynamic forces, even in the absence of Hamiltonian interactions. A particularly important and widespread ex…
The Soft-Membrane Surface Forces Apparatus
Ilyes Jalisse, Aditya Jha, Lionel Buisson +4
Compliant walls are widespread in biological and engineering systems. Because of their singular nature, adapted tools are required to accurately study their rheological properties…
Tuning the water intrinsic permeability of PEGDA hydrogel membranes by adding free PEG chains of varying molar masses
Malak Alaa Eddine, Alain Carvalho, M. Schmutz +6
We explore the effect of poly (ethylene glycol) (PEG) molar mass on the intrinsic permeability and structural characteristics of poly (ethylene glycol) diacrylate PEGDA/PEG composi…
Growth of membranes formed by associating polymers at interfaces
Elena N. Govorun, Julien Dupré de Baubigny, Patrick Perrin +4
Polymer association at liquid-liquid interfaces is a promising way to spontaneously obtain soft self-healing membranes. In the case of reversible bonding between two polymers, the…