175 citations · 241 across the 8 of their papers we have counts for
8 papers
Crazing of Nanocomposites with Polymer-Tethered Nanoparticles
Dong Meng, Sanat K. Kumar, Ting Ge +2
The crazing behavior of polymer nanocomposites formed by blending polymer grafted nanoparticles with an entangled polymer melt is studied by molecular dynamics simulations. We focu…
Ab-initio Study of Size and Strain Effects on the Electronic Properties of Si Nanowires
Xihong Peng, Azar Alizadeh, Sanat K. Kumar +1
We have applied density-functional theory (DFT) based calculations to investigate the size and strain effects on the electronic properties, such as band structures, energy gaps, an…
Universal two-step crystallization of DNA-functionalized nanoparticles
Wei Dai, Sanat K. Kumar, Francis W. Starr
We examine the crystallization dynamics of nanoparticles reversibly tethered by DNA hybridization. We show that the crystallization happens readily only in a narrow temperature "sl…
End Grafted Polymer Nanoparticles in a Polymeric Matrix: Effect of Coverage and Curvature
Joshua Kalb, Douglas Dukes, Sanat K. Kumar +2
It has recently been proposed that the miscibility of nanoparticles with a polymer matrix can be controlled by grafting polymer chains to the nanoparticle surface. As a first step…
Nature of the Breakdown in the Stokes-Einstein Relationship in a Hard Sphere Fluid
Sanat K. Kumar, Grzegorz Szamel, Jack F. Douglas
Molecular Dynamics simulations of high density hard sphere fluids clearly show a breakdown of the Stokes-Einstein equation (SE). This result has been conjectured to be due to the p…
Structural Signatures of Vitrification in Hard Core Fluids
Sanat K. Kumar, Shekhar Garde, Jack F. Douglas +1
Computer simulations of hard spheres and disks are used to estimate the most probable cavity size, , and a ``rattle'' size, , over which a particle…