title: Three-tiered Au nano-disk array for broadband interaction with light.
abstract: We demonstrate a straightforward method to enlarge the spectral window for broadband interaction with light, by creating a plasmonic nanostructure composed of closely spaced multiple Au nano-disks. The vertically stacked, Au nano-disks of three different sizes make it possible to merge the individual spectral windows of the internal nano-disks into one broadband window, and can be simply generated by a single-step electron-beam lithography step with subsequent sputter deposition.
authors.affiliation: International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. wi.jungsub@gmail.com
authors.forename: Jung-Sub
authors.initials: JS
authors.lastname: Wi
authors.forename: Masud
authors.initials: M
authors.lastname: Rana
authors.forename: Tadaaki
authors.initials: T
authors.lastname: Nagao