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Title: Metamaterials to Bridge Propagating Waves with Surface Waves and Control Electromagnetic Waves
Originating Office: IAS
Speaker: Zhou, Lei
Issue Date: 4-Oct-2012
Event Date: 4-Oct-2012
Group/Series/Folder: Record Group 8.15 - Institute for Advanced Study
Series 3 - Audio-visual Materials
Location: 8.15:3 EF
Notes: Croucher Advanced Study Institute on New Materials and New Concepts for Controlling Light and Waves. Talk no.11
Host: HKUST Institute for Advanced Study.
Sponsor: The Croucher Foundation.
Abstract: Controlling electromagnetic (EM) waves freely is a dream for researchers. While manipulating propagating waves (PWs) or surface waves (SWs) has separately become possible using transformation optics, a bridge that can link PWs with SWs at will has not yet been found and is highly desired to make the full control over EM waves possible. Recently, graded structures were widely used to control EM waves, leading to trapped rainbows, lensing, beam bending and deflection, but none of them was focused on bridging a PW with an SW. Here, we demonstrate that a specific gradient-index meta-surface can convert a PW to an SW with theoretically 100% efficiency.
Duration: 35 min.
Appears in Series:8.15:3 - Audio-visual Materials
Videos for Public -- Distinguished Lectures