Bulletin of the American Physical Society
Spring 2011 Meeting Ohio-Region Section of the APS
Volume 56, Number 3
Friday–Saturday, April 15–16, 2011; University Heights, Ohio
Session F1: Plenary Session V |
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Chair: Naveed Piracha, John Carroll University Room: Dolan Science Center Auditorium |
Saturday, April 16, 2011 11:15AM - 12:15PM |
F1.00001: Exploiting Nano-geometrical effects in Energy: Storing hydrogen, adsorbing light, catalyzing reactions Invited Speaker: Nanoscale geometries provide several novel mechanisms towards modifying materials properties for energy applications. In particular, I will discuss the theory of how geometrical constraints on atomic positions can be used to stabilize dispersions of atoms across surfaces in thermodynamically stable states - a configuration at odds with atoms' natural tendency to aggregate. The first such mechanism is divides space into two disconnected zones separated by an impenetrable suspended graphenic sheet with adsorption of otherwise highly co-reactive species, such as alkali and halogen, in opposite subspaces. These systems could find application in broadly tunable bandgap systems, catalysts for energy applications, and new correlated states of matter. The second mechanism involves creating a profound electron deficiency in an sp$^2$- bonded carbon layer, and then saturating this deficiency through atomically dispersed metals. These dispersed atoms could then provide a novel substrate for hydrogen storage. [Preview Abstract] |
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