Jamming of Deformable Polygons

We introduce the deformable particle (DP) model for cells, foams, emulsions, and other soft particulate materials, which adds to the benefits and eliminates deficiencies of existing models. The DP model combines the ability to model individual soft particles with the shape-energy function of the vertex model, and adds arbitrary particle deformations. We focus on 2D deformable polygons with a shape-energy function that is minimized for area a_{0} and perimeter p_{0} and repulsive interparticle forces. We study the onset of jamming versus particle asphericity, A=p_{0}^{2}/4πa_{0}, and find that the packing fraction grows with A until reaching A^{*}=1.16 of the underlying Voronoi cells at confluence. We find that DP packings above and below A^{*} are solidlike, which helps explain the solid-to-fluid transition at A^{*} in the vertex model as a transition from tension- to compression-dominated regimes.

Medienart:

E-Artikel

Erscheinungsjahr:

2018

Erschienen:

2018

Enthalten in:

Zur Gesamtaufnahme - volume:121

Enthalten in:

Physical review letters - 121(2018), 24 vom: 14. Dez., Seite 248003

Sprache:

Englisch

Beteiligte Personen:

Boromand, Arman [VerfasserIn]
Signoriello, Alexandra [VerfasserIn]
Ye, Fangfu [VerfasserIn]
O'Hern, Corey S [VerfasserIn]
Shattuck, Mark D [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Completed 09.01.2019

Date Revised 09.01.2019

published: Print

Citation Status PubMed-not-MEDLINE

doi:

10.1103/PhysRevLett.121.248003

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM292373554