2024
Connecting polymer collapse and the onset of jamming
Grigas A, Fisher A, Shattuck M, O'Hern C. Connecting polymer collapse and the onset of jamming. Physical Review E 2024, 109: 034406. PMID: 38632799, DOI: 10.1103/physreve.109.034406.Peer-Reviewed Original ResearchStatic packingsMechanical propertiesPolymer packingPacking fractionBead-spring polymersInterior of proteinsInterparticle contactsHigh packing fractionsPolymerAmino acidsDegrees of freedomRepulsive disksQuartic modesPolymer collapseQuartic scalingRepulsive particlesInterparticlePeptide bondPropertiesReference systemPackingParticlesPotential energyExcessive contactMode
2019
Jammed packings of 3D superellipsoids with tunable packing fraction, coordination number, and ordering
Yuan Y, VanderWerf K, Shattuck MD, O'Hern CS. Jammed packings of 3D superellipsoids with tunable packing fraction, coordination number, and ordering. Soft Matter 2019, 15: 9751-9761. PMID: 31742301, PMCID: PMC6902436, DOI: 10.1039/c9sm01932d.Peer-Reviewed Original ResearchParticle shape parametersDifferent particle shapesPacking fractionAspect ratio βMechanical propertiesCompression simulationsDilute configurationsNumerical studyStatic packingsParticle shapeSuperellipsoidal particlesIsostatic valueRatio βDense configurationPacking-generation protocolsShape parametersParticlesJammed packingsQuartic modesRedundant contactsConfigurationSuperellipsoidsParametersOrientational order
2005
Velocity Profiles in Repulsive Athermal Systems under Shear
Xu N, O'Hern CS, Kondic L. Velocity Profiles in Repulsive Athermal Systems under Shear. Physical Review Letters 2005, 94: 016001. PMID: 15698098, DOI: 10.1103/physrevlett.94.016001.Peer-Reviewed Original ResearchVelocity profilesMean velocity profileNonlinear velocity profilesPlanar shear flowEnhanced velocity fluctuationsVelocity fluctuationsAthermal systemsShear wavesShear flowShearing wallsVelocity uUnderdamped systemUnderdamped dynamicsRandom close packingOverdamped dynamicsPacking fractionSmall dampingSpatial dimensionsCritical valueDynamics simulationsMolecular dynamics simulationsFraction phiDampingShearClose packing