S1 Supporting Information Dynamics of Energy Transfer in Large Plasmonic Aluminum Nanoparticles Kenneth J. Smith †,# , Yan Cheng ‡,# , Ebuka S. Arinze ‡,# , Nicole E. Kim ‡ , Arthur E. Bragg † , Susanna M. Thon ‡ † Department of Chemistry, Johns Hopkins University, 3400 N Charles St, Baltimore 21218, United States ‡ Department of Electrical and Computer Engineering, Johns Hopkins University, 3400 N Charles St, Baltimore 21218, United States