Subwavelength internal imaging by means of the wire medium - Condensed Matter > Other Condensed MatterReportar como inadecuado




Subwavelength internal imaging by means of the wire medium - Condensed Matter > Other Condensed Matter - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Evanescent wave amplification is observed, for the first time to ourknowledge, inside a half-wavelength-thick wire medium slab used forsubwavelength imaging. The wire medium is analyzed using both a spatiallydispersive finite-difference time-domain FDTD method and a full-wavecommercial electromagnetic simulator CST Microwave Studio. In this work wedemonstrate that subwavelength details of a source placed at a distance ofone-tenth of a wavelength from a wire medium slab can be detected inside theslab with a resolution of approximately one-tenth of a wavelength in spite ofthe fact that they cannot be resolved at the front interface of the device, dueto the rapid decay of evanescent spatial harmonics in free space.



Autor: Yan Zhao, Pavel A. Belov, Yang Hao

Fuente: https://arxiv.org/







Documentos relacionados