B
Bobby G. Sumpter
Researcher at Oak Ridge National Laboratory
Publications - 652
Citations - 28014
Bobby G. Sumpter is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Polymer & Graphene. The author has an hindex of 60, co-authored 619 publications receiving 23583 citations. Previous affiliations of Bobby G. Sumpter include University of Florida & Cornell University.
Papers
More filters
Posted Content
Reconstruction of effective potential from statistical analysis of dynamic trajectories
Ali Yousefzadi Nobakht,Ondrej Dyck,David B. Lingerfelt,Feng Bao,Maxim Ziatdinov,Artem Maksov,Bobby G. Sumpter,Rick Archibald,Stephen Jesse,Sergei V. Kalinin,Kody J. H. Law +10 more
TL;DR: In this article, the authors developed a method for stochastic reconstruction of effective acting potentials from observed trajectories using the Silicon vacancy defect in graphene as a model, and developed a statistical framework to reconstruct the free energy landscape from calculated atomic displacements.
Journal ArticleDOI
Dynamics of charged polymers. 1
TL;DR: In this paper, full classical dynamics is used to study the properties of isolated multiply charged polymeric ions consisting of 1000 monomer units and 1, 5, 10, 15 and 20 charges equally spaced along the chain.
Posted Content
Single atom force measurements: mapping potential energy landscapes via electron beam induced single atom dynamics
Ondrej Dyck,Feng Bao,Maxim Ziatdinov,Ali Yousefzadi Nobakht,Seungha Shin,Kody J. H. Law,Artem Maksov,Bobby G. Sumpter,Rick Archibald,Stephen Jesse,Sergei V. Kalinin +10 more
TL;DR: In this article, a single dopant Si atom in the graphene lattice is used as an atomic scale force sensor, providing information on the random force exerted by the beam on chemically-relevant time scales.
Journal ArticleDOI
Extracting physics through deep data analysis
TL;DR: In materials science, understanding and ultimately designing new materials with complex properties will require the ability to integrate and analyze data from multiple instruments, including computational models, designed to probe complementary rangesmore of space, time, and energy.
Journal ArticleDOI
Understanding the effects of symmetric salt on the structure of a planar dipolar polymer brush.
TL;DR: The field theory developed in this work provides a unified framework for capturing effects of the inhomogeneous dielectric function, translational entropy of ions, crowding due to finite sized ions, ionic size asymmetry, and ion solvation.