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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
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Dynamic Charge Storage in Ionic Liquids-Filled Nanopores: Insight from a Computational Cyclic Voltammetry Study
TL;DR: In this paper, a coarse-grained molecular dynamics simulation of the cyclic voltammetry of supercapacitors featuring subnanometer pores and model ionic liquids is presented.
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Amphiphilic Bottlebrush Block Copolymers: Analysis of Aqueous Self-Assembly by Small-Angle Neutron Scattering and Surface Tension Measurements
Mohammed Alaboalirat,Luqing Qi,Kyle J. Arrington,Shuo Qian,Jong K. Keum,Hao Mei,Kenneth C. Littrell,Bobby G. Sumpter,Jan-Michael Y. Carrillo,Rafael Verduzco,John B. Matson +10 more
TL;DR: In this paper, a series of 16 amphiphilic bottlebrush block copolymers (BCPs) containing polystyrene and poly(N-acryloylmorpholine) (PACMO) side chains were prepared by a combination of atom-transfer radical polymerization (ATRP), photoiniferter polymerization, and ring-opening metathesis polymerization.
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Diffusion of Sticky Nanoparticles in a Polymer Melt: Crossover from Suppressed to Enhanced Transport
Bobby Carroll,Vera Bocharova,Jan-Michael Y. Carrillo,Alexander Kisliuk,Shiwang Cheng,Umi Yamamoto,Kenneth S. Schweizer,Bobby G. Sumpter,Alexei P. Sokolov,Alexei P. Sokolov +9 more
TL;DR: In this paper, the tracer diffusion coefficient of small and large nanoparticles that experience strong attraction with unentangled and entangled polymer melt matrices is analyzed and a crossover from suppressed to enhanced diffusion is observed with increasing polymer molecular weight.
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Dynamics of flow inside carbon nanotubes
TL;DR: In this paper, a buckyball, cage or idealized atom in a helium fluid flowing axially inside a carbon nanotube was simulated and shown to reach fluid velocity within 5 ps.
Posted Content
Building and exploring libraries of atomic defects in graphene: scanning transmission electron and scanning tunneling microscopy study
Maxim Ziatdinov,Ondrej Dyck,Bobby G. Sumpter,Stephen Jesse,Rama K. Vasudevan,Sergei V. Kalinin +5 more
TL;DR: This approach allows automatic creation of defect libraries in solids, exploring the metastable configurations always present in real materials, and correlative studies with other atomically resolved techniques, providing comprehensive insight into defect functionalities.