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In this paper we identify a set of two-dimensional variational inequalities that model the displacement of a linearly elastic flexural shell subjected to a confinement condition, expressing that all the points of the admissible deformed…

偏微分方程分析 · 数学 2023-05-02 Paolo Piersanti

Defects arise when nematic liquid crystals are under topological constraints at the boundary. Recently the study of defects has drawn a lot of attention. In this paper, we investigate the relationship between two-dimensional defects and…

软凝聚态物质 · 物理学 2015-10-16 Yang Qu , Ying Wei , Pingwen Zhang

Confinement can significantly alter fluid properties, offering potential for specific technological applications. However, achieving precise control over the structural complexity of confined fluids and soft matter remains challenging, as…

软凝聚态物质 · 物理学 2024-11-20 Fabio Leoni , Erdal C. Oğuz , Giancarlo Franzese

An analytical study on crease formations in a swelling gel layer is conducted. By exploring the smallness of the layer thickness and using a method of coupled series-asymptotic expansions, the original nonlinear eigenvalue problem of…

软凝聚态物质 · 物理学 2014-10-31 Xiaoyi Chen , Hui-Hui Dai

Amorphous solids are known to fail catastrophically and in some situations, nano-scaled cavities are believed to play a significant role in the failure. In a recent work, using numerical simulations, we have shown the correspondence between…

软凝聚态物质 · 物理学 2023-03-09 Umang A. Dattani , Rishabh Sharma , Smarajit Karmakar , Pinaki Chaudhuri

The transport and deformation of confined droplets and flexible capsules are central to diverse phenomena and applications, from biological flows in microcapillaries to industrial processes in porous media. Inspired by experiments, we…

The shape assumed by a slender elastic structure is a function both of the geometry of the space in which it exists and the forces it experiences. We explore by experiments and theoretical analysis, the morphological phase-space of a…

软凝聚态物质 · 物理学 2023-12-11 S Ganga Prasath , Joel Marthelot , Rama Govindarajan , Narayanan Menon

We study the indentation of ultrathin elastic sheets clamped to the edge of a circular hole. This classical setup has received considerable attention lately, being used by various experimental groups as a probe to measure the surface…

软凝聚态物质 · 物理学 2017-03-16 Dominic Vella , Benny Davidovitch

We report a surface instability observed during the extrusion of extremely soft elastic solids in confined geometries. Due to their unique rheological properties, these soft solids can migrate through narrow gaps by continuously everting…

软凝聚态物质 · 物理学 2025-02-18 Jonghyun Hwang , Mariana Altomare , Howard A. Stone

Motivated by recent experiments on biomimetic membranes exposed to several aqueous phases, we theoretically study the morphology of a membrane in contact with a liquid droplet formed via aqueous phase separation. We concentrate on membranes…

软凝聚态物质 · 物理学 2012-02-07 Halim Kusumaatmaja , Reinhard Lipowsky

We study the dynamical formation of disoriented chiral condensates in very high energy nucleus-nucleus collisions using Bjorken hydrodynamics and relativistic nucleation theory. It is the dynamics of the first order confinement phase…

核理论 · 物理学 2007-05-23 Joseph I. Kapusta , Axel P. Vischer

Topological defects are crucial to the thermodynamics and structure of condensed matter systems. For instance, when incorporated into crystalline membranes like graphene, disclinations with positive and negative topological charge…

软凝聚态物质 · 物理学 2018-08-29 Isaac R. Bruss , Gregory M. Grason

The material characterization of ultra-thin solid sheets, including two-dimensional materials like graphene, is often performed through indentation tests on a flake suspended over a hole in a substrate. While this `suspended indentation' is…

材料科学 · 物理学 2020-09-03 Thomas G. J. Chandler , Dominic Vella

Elastic capsules, prepared from droplets or bubbles attached to a capillary (as in a pendant drop tensiometer), can be deflated by suction through the capillary. We study this deflation and show that a combined analysis of the shape and…

软凝聚态物质 · 物理学 2013-10-21 Sebastian Knoche , Dominic Vella , Elodie Aumaitre , Patrick Degen , Heinz Rehage , Pietro Cicuta , Jan Kierfeld

Releasing shell-shaped Bose-Einstein condensates from their confinement produces a spherically symmetric density distribution characterized by concentric ripples surrounding a central peak. Here we investigate how a vortex-antivortex dipole…

量子气体 · 物理学 2026-04-23 A. Tononi

In this work, we consider the stability of a spherical shell under combined loading from a uniform external pressure and a homogenous natural curvature. Non-mechanical stimuli, such as one that tends to modify the rest curvature of an…

软凝聚态物质 · 物理学 2020-08-26 Douglas P. Holmes , Jeong-Ho Lee , Harold S. Park , Matteo Pezzulla

We present a novel application of rotors in geometric algebra to represent the change of curvature tensor, that is used in shell theory as part of the constitutive law. We introduce a new decomposition of the change of curvature tensor,…

数学物理 · 物理学 2017-11-23 Alastair L Gregory , Anurag Agarwal , Joan Lasenby

We study avenues to shape multistability and shape-morphing in flexible crystalline membranes of cylindrical topology, enabled by glide mobility of dislocations. Using computational modeling, we obtain states of mechanical equilibrium…

软凝聚态物质 · 物理学 2022-03-23 Andrei Zakharov , Daniel A. Beller

The presence of slight azimuthal asymmetry in the initial shape of an underwater bubble entirely alters the final breakup dynamics. Here I examine the influence of initial asymmetry on the final breakup by simulating the bubble surface…

流体动力学 · 物理学 2015-06-04 Lipeng Lai

The current study presents the natural vibrations of single-walled carbon nanotubes (SWCNTs) using the nonlocal theory of elasticity. The study will help to develop nanodevices. The study focuses on the natural vibrations of curved or…

动力系统 · 数学 2023-08-08 Shahid Mubasshar