title: Surface Wave Cloak from Graded Refractive Index Nanocomposites.
abstract: Recently, a great deal of interest has been re-emerged on the possibility to manipulate surface waves, in particular, towards the THz and optical regime. Both concepts of Transformation Optics (TO) and metamaterials have been regarded as one of key enablers for such applications in applied electromagnetics. In this paper, we experimentally demonstrate for the first time a dielectric surface wave cloak from engineered gradient index materials to illustrate the possibility of using nanocomposites to control surface wave propagation through advanced additive manufacturing. The device is designed analytically and validated through numerical simulations and measurements, showing good agreement and performance as an effective surface wave cloak. The underlying design approach has much wider applications, which span from microwave to optics for the control of surface plasmon polaritons (SPPs) and radiation of nanoantennas.
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
authors.forename: L
authors.initials: L
authors.lastname: La Spada
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
authors.forename: T M
authors.initials: TM
authors.lastname: McManus
authors.affiliation: BAE Systems Advanced Technology Centre, BS34 7QW, England, UK.
authors.forename: A
authors.initials: A
authors.lastname: Dyke
authors.affiliation: BAE Systems Advanced Technology Centre, BS34 7QW, England, UK.
authors.forename: S
authors.initials: S
authors.lastname: Haq
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
authors.forename: Q
authors.initials: Q
authors.lastname: Cheng
authors.affiliation: School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
authors.forename: Y
authors.initials: Y
authors.lastname: Hao