Energy and Environment Directorate 1 article published in JoVE Engineering Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography Brent M. DeVetter1, Bruce E. Bernacki1, Wendy D. Bennett1, Alan Schemer-Kohrn1, Kyle J. Alvine1 1Pacific Northwest National Laboratory, Energy and Environment Directorate We demonstrate the fabrication of periodic gold nanocup arrays using colloidal lithographic techniques and discuss the importance of nanoplasmonic films.