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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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Semiclassical rotation-vibration energies for a triatomic molecule: H2O
Bobby G. Sumpter,Gregory S. Ezra +1 more
TL;DR: In this paper, the authors reported primitive semiclassical rotation-vibrational energy levels for a triatomic molecule, H 2 O, with inclusion of all three vibrational degrees of freedom.
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Domain-size effects in optical diffraction from polymer/composite microparticles
Jess V. Ford,Bobby G. Sumpter,and Donald W. Noid,Michael D. Barnes,Steven C. Hill and,D. Hillis +5 more
TL;DR: In this article, poly(ethylene glycol) microparticles were doped with ceramic or latex nanoparticles in order to examine domain-size and refractive index effects of nanometer-sized guest inclusions on two-dimensional diffraction patterns.
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Theoretical studies of the effects of anharmonicity on polymer dynamics: temperature dependence of heat capacity
Bobby G. Sumpter,Bobby G. Sumpter,Donald W. Noid,Donald W. Noid,Bernhard Wunderlich,Bernhard Wunderlich +5 more
TL;DR: In this paper, the effects of anharmonicity on the dynamics of various polymer chains were studied and it was shown that there is a transition from a regime where the harmonic approximation to the molecular vibrations is adequate to a regime when the motion can no longer be accurately described with a harmonic approximation.
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On the Geometry and Electronic Structure of the As-DNA Backbone
TL;DR: The optimized geometries as well as hyperconjugation effects along the C3′—O3′-X—X—O5′—C5′ linkage exhibit a remarkable similarity for both arsenates and phosphates, suggesting that arsenates, if present, might serve as a potential substitute for phosphate in the DNA backbone.
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A molecular dynamics method for obtaining the vibrational spectra of macromolecules
TL;DR: In this paper, a molecular dynamics-based method is used to compute the vibrational spectra and dispersion curves of a polyethylene chain, and the results are compared and contrasted with those of normal mode calculations.