Supporting Information for Dramatic Modification of Coupled-Plasmon Resonances Following Exposure to Electron Beams Haixu Leng, † Brian Szychowski, ‡ Marie-Christine Daniel, ‡ and Matthew Pelton *,† †Department of Physics, University of Maryland, Baltimore County, Baltimore, USA ‡Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, Baltimore, USA E-mail: mpelton@umbc.edu 1