2021/03/03 by Alexander J. Vernon, Francisco J. Rodríguez-Fortuño, Vernon, Alexander J. +2
Engineering · Physics and Astronomy · #Advanced Fiber Optic Sensors #FOS: Physical sciences #Optics (physics.optics) #Photonic Crystals and Applications #Plasmonic and Surface Plasmon Research #physics.optics
paper · pdf · doi:10.48550/arxiv.2103.02544
6 pages, 4 figures
arxiv created 2021/03/03 · openalex publication_date 2021/03/03 · arxiv updated 2021/03/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Cold spots are sub-wavelength regions which might emerge near a plasmonic nanoantenna, should one or more components of some far-field illumination cancel out with scattered light. With a simplest-case demonstration using two dipolar scatterers, we show that by changing only the polarisation and amplitude of two plane waves, a unique, zero-magnitude and super sub-wavelength cold spot can be created anywhere in the space around a nanoantenna. This technique is a means for ultra-fast, remote, and non-mechanical sub-wavelength electric field manipulation.