caa a22 4500 463216024 CHVBK 20180405153156.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s00339-007-3875-2 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3875-2 Metallic negative index nanostructures at optical frequencies: losses and effect of gain medium [Elektronische Daten] [E.V. Ponizovskaya, A.M. Bratkovsky] One of the most important modern problems in modern electromagnetics is a design and study of negative index metamaterials that may enable sub-wavelength imaging at optical frequencies. Plasmonic periodic metal-dielectric nanostructures present one interesting possibility for both 2D and 3D negative index medium (NIM) systems. The displacement current near plasmonic resonance excitations may produce both negative permittivity and negative permeability (most difficult) in a NIM with e.g. "fishnet” metal-dielectric composite type structure. One obvious problem with a metallic NIM is that the response is strongly dispersive and lossy. Both of these effects are detrimental to sub-wavelength imaging. One way of mitigating losses is to use a gain medium. We address the question of sub-wavelength resolution in the fishnet NIM with and without gain medium. Springer-Verlag, 2007 Ponizovskaya E.V. Hewlett-Packard Laboratories, 940304, Palo Alto, CA, USA aut Bratkovsky A.M. Hewlett-Packard Laboratories, 940304, Palo Alto, CA, USA aut Applied Physics A Springer-Verlag 87/2(2007-05-01), 161-165 0947-8396 87:2<161 2007 87 339 https://doi.org/10.1007/s00339-007-3875-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3875-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ponizovskaya E.V. Hewlett-Packard Laboratories, 940304, Palo Alto, CA, USA aut NATIONALLICENCE 700 1- Bratkovsky A.M. Hewlett-Packard Laboratories, 940304, Palo Alto, CA, USA aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 87/2(2007-05-01), 161-165 0947-8396 87:2<161 2007 87 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer