138 citations · 1.1k across the 27 of their papers we have counts for
5 papers · 1 filter
Atomic Origins of Friction Reduction in Metal Alloys
Shengfeng Cheng, Michael Chandross
We present the results of large scale molecular dynamics simulations aimed at understanding the origins of high friction coefficients in pure metals, and their concomitant reductio…
Coarse-Grained Molecular Dynamics Modeling of A Branched Polyetherimide
Chengyuan Wen, Roy Odle, Shengfeng Cheng
A coarse-grained model is developed to allow large-scale molecular dynamics (MD) simulations of a branched polyetherimide derived from two backbone monomers [4,4'-bisphenol A dianh…
Defining Contact at the Atomic Scale
Shengfeng Cheng, Mark O. Robbins
Molecular dynamics simulations are used to study different definitions of contact at the atomic scale. The roles of temperature, adhesive interactions and atomic structure are stud…
Mechanical response of a self avoiding membrane: fold collisions and the birth of conical singularities
Paula Mellado, Shengfeng Cheng, Andres Concha
An elastic membrane that is forced to reside in a container smaller than its natural size will deform and, upon further volume reduction, eventually crumple. The crumpled state is…
Contact and Friction of Nano-Asperities: Effects of Adsorbed Monolayers
Shengfeng Cheng, Binquan Luan, Mark O. Robbins
Molecular dynamics simulations are used to study contact between a rigid, nonadhesive, spherical tip with radius of order 30nm and a flat elastic substrate covered with a fluid mon…