Title:
Negative index materials using simple short wire pairs
Author(s):
Jiangfeng Zhou, Lei Zhang, Gary Tuttle, Thomas Koschny and Costas M. Soukoulis
Source:
Physical Review B 73, 2006
Vol./Issue/Date:
Year:
2006
Page(s):
041101
Keywords:
Abstract:
Negative refraction is currently achieved by a combination of artificial “electric atoms” metallic wires with
negative electrical permittivity and artificial “magnetic atoms” split-ring resonators with negative magnetic
permeability . Both and must be negative at the same frequency, which is not easy to achieve at higher
than THz frequencies. We introduce improved and simplified structures made of periodic arrays of pairs of
short metal wires and continuous wires that offer a potentially simpler approach to building negative index
materials. Using simulations and microwave experiments, we have investigated the negative index n properties
of short wire-pair structures. We have measured experimentally both the transmittance and the reflectance
properties and found unambiguously that n0. The same is true for and . Our results show that short
wire-pair arrays can be used very effectively in producing materials with negative refractive indices.
Document:
Reference Id:
57
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