Bobby Sumpter Archives | The American Ceramic Society

Bobby Sumpter

To infinitesimal and beyond – an electron structure explanation of supercapacitance

By Eileen De Guire / June 24, 2011

Computational modeling of carbon supercapacitors with the effects of surface curvature included. Credit: Jingsong Huang, ORNL A fair number of recent posts have been about nanostructured porous materials (PCCMs, diamond aerogel, tunable gold). The interesting characteristics of these materials necessarily depend on the porosity: What is not there makes the material what it is. The…

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Electron irradiation to minimize loops in graphene

By / August 24, 2010

Loops (seen above in blue) between graphene layers can be minimized using electron irradiation (bottom). (Credit: ORNL) According to a press release, researchers at Oak Ridge National Lab have discovered how loops develop in graphene, an electrically conductive high-strength low-weight material that resembles an atomic-scale honeycomb. The nanoscale simulations are bringing scientists closer to using…

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