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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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Step-by-step growth of epitaxially aligned polythiophene by surface-confined reaction
Josh Lipton-Duffin,Jill A. Miwa,Mykola Kondratenko,Fabio Cicoira,Bobby G. Sumpter,Vincent Meunier,Dmitrii F. Perepichka,Federico Rosei +7 more
TL;DR: This paper demonstrates the surface-confined growth of ordered arrays of poly(3,4-ethylenedioxythiophene) (PEDOT) chains, by using the substrate (the 110 facet of copper) simultaneously as template and catalyst for polymerization, and confirms an unexpected adsorption geometry of the PEDOT oligomers.
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Heterojunctions between metals and carbon nanotubes as ultimate nanocontacts
Julio A. Rodríguez-Manzo,Florian Banhart,Mauricio Terrones,Humberto Terrones,Nicole Grobert,Pulickel M. Ajayan,Bobby G. Sumpter,Vincent Meunier,Ming-Sheng Wang,Yoshio Bando,Dmitri Golberg +10 more
TL;DR: Density functional calculations show that these structures are mechanically strong, the bonding at the interface is covalent, and the electronic states at and around the Fermi level are delocalized across the entire system, essential for the application of such heterojunctions as contacts in electronic devices and for the fabrication of robust nanotube–metal composite materials.
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Directing Matter: Toward Atomic-Scale 3D Nanofabrication.
Stephen Jesse,Albina Y. Borisevich,Jason D. Fowlkes,Andrew R. Lupini,Philip D. Rack,Raymond R. Unocic,Bobby G. Sumpter,Sergei V. Kalinin,Alex Belianinov,Olga S. Ovchinnikova +9 more
TL;DR: The gaps that currently constrain the processing range of these platforms are laid out, reflect on indirect requirements, such as the integration of large-scale data analysis with theory, and discuss future prospects of these technologies.
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Untangling the Effects of Chain Rigidity on the Structure and Dynamics of Strongly Adsorbed Polymer Melts
Jan-Michael Y. Carrillo,Shiwang Cheng,Rajeev Kumar,Monojoy Goswami,Alexei P. Sokolov,Bobby G. Sumpter +5 more
TL;DR: In this article, a detailed analysis of coarse-grained molecular dynamics simulations of semi-lexible polymer melts in contact with a strongly adsorbing substrate is presented, where the segments in the interfacial layer are characterized by counting the number of trains, loops, tails, and unadsorbed segments.