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Title: Study of scattering patterns and subwavelength scale imaging based on finite-sized metamaterials
Authors: Schenk, John O.
Fiddy, Michael A.
Zhang, Yuan
Chuang, Yi-Chen
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Zhang, Y., Chuang, Y. C., Schenk, J. O.,& Fiddy, M. A. (2012). Study of scattering patterns and subwavelength scale imaging based on finite-sized metamaterials. Applied Physics A, 107(1), 61-69.
Series/Report no.: Applied physics A
Abstract: A metamaterial slab, used as a superlens in a subwavelength imaging system, is frequently assumed homogeneous. It is the bulk properties of the metamaterial which are responsible for the resolution of the transferred information in the image domain, as a result of high transverse wave-vector coupling. However, how in a discretized metamaterial, individual meta-atoms (i.e., the meta-elements composing a negative index metamaterial slab) contribute to the imaging process is still actively studied. The main aim of this paper is to investigate the consequences of using only a few meta-atoms as a negative index slab-equivalent for subwavelength scale imaging. We make a specific choice for a meta-atom and investigate its resonant scattering patterns. We report on how knowledge of these 3D scattering patterns provides a means to understand the transfer of high spatial frequencies and assist with the design an improved negative index slab.
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