Jamming in attractive soft spheres

Dion Koeze, Brian Tighe, Lingtjien Hong, Abhishek Kumar

Research output: Contribution to journalMeeting AbstractScientific


While jamming is best understood in the context of purely repulsive soft spheres, emulsions and other experimental realizations of the soft sphere model commonly display weakly cohesive forces. We perform simulations of soft spheres with a finite-ranged attractive tail in the pair potential. The resulting attractive soft sphere packings can be stable at volume fractions below the purely repulsive jamming point. These new jammed states have counter-intuitive properties -- for example, while attraction introduces tensile forces, their presence leads to an increase in the compressive stress. We use critical scaling analysis to characterize the geometry and mechanics of attractive soft sphere packings as a function of both the volume fraction and the range of the attractive interaction.
Original languageEnglish
Article numberA14.00008
Number of pages1
JournalAmerican Physical Society. Bulletin
Issue number4
Publication statusPublished - 2017
EventAPS March Meeting 2017 - New Orleans, United States
Duration: 13 Mar 201717 Mar 2017


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