Surface Wave Cloak from Graded Refractive Index Nanocomposites

La Spada, Luigi; McManus, T. M.; Dyke, A.; Haq, S.; Zhang, L.; Cheng, Q.; Hao, Y.

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.

• Journal Article Type: Article
• Acceptance Date: Jun 17, 2016
• Online Publication Date: Jul 15, 2016
• Publication Date: 2016-09
• Deposit Date: Nov 21, 2018
• Publicly Available Date: Nov 22, 2018
• Journal: Scientific Reports
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 1
• Pages: 29363
• DOI: https://doi.org/10.1038/srep29363
• Keywords: Electrical and electronic engineering, Metamaterials, Synthesis and processing
• Public URL: http://researchrepository.napier.ac.uk/Output/1374566
• Contract Date: Nov 22, 2018