October 6, 2016. Sean Kessler has received the award for best oral presentation at this year’s PNNL Post Graduate Research Symposium. Sean spoke on the ab-initio alloy thermodynamics of molybdenum- and ruthenium-containing metallic nanoparticles in spent UO₂ fuel. The research seeks to resolve lingering discrepancies between existing models and experiments and to provide a useful foundation for future computational efforts.