Peristaltic instability of cylindrical gels

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August undefined, 2024

WebNov 1, 2024 · In this study, we uncover a new instability mode of hydrogels – the delayed tensile instability. We use the necking formation of DN gels as an example to illustrate the concept of delayed tensile instability [Fig. 1 (a)].Under a monotonic load that rapidly increases at a constant rate, the hydrogel elongates uniformly in the beginning, and then … WebFIG. 1. Solid elastic cylinders undergo a peristaltic instability if surface tension, , is su cient. Top: Experiment in gels from [5]. Bottom: Schematic of the instability. The canonical …

Peristaltic Elastic Instability in an Inflated Cylindrical Channel

WebAug 15, 2016 · Peristaltic instability in a solid cylinder of modulus μ i through a bulk solid with modulus μ o. (a) Critical surface tension for instability for concentric cylinders with μ … WebNov 5, 2024 · While the adhesive interaction between the film surface and contactor stimulates contact instability by subduing the restoring elastic and surface tension forces, the forces due to radial curvature instigate the capillary instability. how to do time in excel

Peristalsis - Wikipedia

WebAug 1, 2015 · We investigate beading instability in soft cylindrical gels with capillary energy. • Beading is governed by the elastocapillary ratio and the applied stretch. • The application … WebDispersion stability of TEMPO-oxidized cellulose nanofibrils (TOCNs) in water was investigated through both experimental and theoretical analyses to elucidate the critical aggregation concentration of different salts. The 0.1 wt% TOCN/water dispersions with various NaCl concentrations were evaluated by measuring light transmittance, viscosity … WebSemantic Scholar profile for B. Barrière, with 2 highly influential citations and 15 scientific research papers. how to do time in c++

Phys. Rev. E 94, 023107 (2016) - Finite-wavelength surface …

A methodology for modeling surface effects on stiff and soft …

WebSep 2, 2024 · Rayleigh-Plateau instabilities in soft rods. a The instability occurs when the surface tension is 11 mN/m. b The instability does not occur when the surface tension is 10 mN/m. c Wavelength due to the instability versus surface tension; d The radial displacement along the surface and the inset shows the corresponding FT when the surface tension … WebPeristaltic Elastic Instability in an Inflated Cylindrical Channel Nontawit Cheewaruangroj Cavendish Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 … leasing auto second hand mdWebOct 20, 2024 · 2.1. Peptide concentration. One of the most important factors influencing the physical stability of peptides is peptide concentration. This is long-established through numerous kinetic studies on the formation of amyloid fibrils [ 61 – 65 ], amorphous aggregates [ 66, 67] and adsorption on surfaces [ 68 ]. leasing auto privat günstig

"Web摘要：. A long cylindrical cavity through a soft solid forms a soft microfluidic channel, or models a vascular capillary. We observe experimentally that, when such a channel bears a pressurized fluid, it first dilates homogeneously, but then becomes unstable to a peristaltic elastic instability. We combine theory and numerics to fully ... " - Peristaltic instability of cylindrical gels

Peristaltic instability of cylindrical gels

Dispersion stability and aggregation behavior of TEMPO-oxidized ...

WebAug 1, 2015 · Soft cylindrical gels can develop a long-wavelength peristaltic pattern driven by a competition between surface tension and bulk elastic energy. In contrast to the … WebSep 13, 2024 · The present invention provides a method for manufacturing an artificial polypeptide fiber, the method comprising: a step for bundling a plurality of raw material fibers containing an artificial polypeptide; and a step for bringing an obtained bundle of raw material fibers into contact with a composition containing a binder and an enzyme.

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WebBarrière, Peristaltic instability of cylindrical gels, The Journal of Chemical Physics, vol.105, issue.4, pp.1735-1738, 1996. D. Bernardino, N. R. Bernardino, and S. Dietrich, Complete wetting of elastically responsive substrates, Physical Review E, … WebIn the case of a surface patterns of cylindrical gels for both swelling and soft gel, bubble formation during shrinking is a more compli- shrinking. Exact solutions are calculated for the initial cated and less understood mechanism, driven by the competi- stages of such peristaltic instabilities.

WebApr 11, 2024 · Currently, there is a shortage of pediatric medicines on the market, and 3D printing technology can more flexibly produce personalized medicines to meet individual needs. The study developed a child-friendly composite gel ink (carrageenan-gelatin), created 3D models by computer-aided design technology, then produced personalized medicines … WebFeb 15, 2024 · A long cylindrical cavity through a soft solid forms a soft microfluidic channel, or models a vascular capillary. We observe experimentally that, when such a channel bears a pressurized fluid, it first dilates homogeneously, but then becomes unstable to a peristaltic elastic instability. We combine …

WebJan 18, 2012 · We propose a variational method for determining the surface patterns of cylindrical gels for both swelling and shrinking. Exact solutions are calculated for the … WebConsider a cylindrical hydrogel model depicted in Fig.1. The surface instability analysis of the problem was carefully decomposed into a series of events and various states of …

WebPDF Soft cylindrical gels can develop a long-wavelength peristaltic pattern driven by a competition between surface tension and bulk elastic energy. In contrast to the Rayleigh-Plateau instability for viscous fluids, the macroscopic shape in soft solids evolves toward a stable beading, which strongly differs from the buckling arising in compressed elastic …

WebFigure 1: Example of elastocapillary beading, bulging, pearling, and peristaltic instability in soft solids. (a) Beading in a shrinking cylindrical acrylamide gel immersed in an acetone-water mixture (Matsuo & Tanaka, 1992). (b) Beading instability of a soft agar cylindrical gels immersed in toluene (Mora et al., 2010). (c) Axonal swelling due to leasing auto privat angeboteWebMar 1, 2024 · In this study we propose a novel phase-field theory based on non-equilibrium thermodynamics that resolves both the macroscopic deformations and the internal structure of a polyelectrolyte gel immersed in an ionic solution. leasing aut używanych ofertaWebWe investigate here the stability of a gel cylinder subject to a strong surface tension. Both the criteria for the occurrence of a peristaltic instability and its dynamical evolution are … leasing auto ummeldenWebFeb 1, 2024 · Similarly, a soft elastic cylinder under axial stretching can develop an instability if the surface tension is large enough. This instability occurs when the axial force reaches a maximum with fixed surface tension or the surface tension reaches a maximum with fixed axial force. leasing auto usateWebApr 1, 2024 · Perturbation theory is used to derive the partial differential equations that govern the bifurcation behaviour of the cylindrical channel. Two cases of boundary conditions on the outer surface of... how to do time intervals in excelWebAs in liquids, the instability originates in the geometric fact that a vol- ume preserving peristaltic undulation with wavelength along a cylinder of radius R 0reduces its surface area provided >2ˇR 0. If R 0. l capthe resultant saving in surface energy exceeds the elastic energy, so the cylinder is unstable. leasing auto hamburgWebpatterns of cylindrical gels for both swelling and shrinking. Exact solutions are calculated for the initial stages of such peristaltic … leasing auto privat sofort verfügbar