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Left-handed properties dependence versus the interwire distance in Fe-based microwires metastructures
, F.X. Qin
, F. Scarpa
, J. Carbonel
, M. Ipatov
, V. Zhukova
, A. Zhukov
, J. Gonzales
, and H.X. Peng
10.C.A. Balanis, Advanced Engineering Electromagnetics (John Wiley & Sons, New York, 1989), p. 352.
14.J. Baker-Jarvis, M.D. Janezic, J.H. Grosvenor, Jr., and R.G. Geyer, NIST Project, Boulder, CO, Tech. Note No. 1355-R (1993).
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Experimental and theoretical investigations on the left-handed properties dependence versus the interwire distance of three new proposed Fe77.5Si7.5B15 glass coated microwires-based metastructures are presented. The left-handed characteristics of the metastructures were determined in the frequency range 8.2 ÷ 12 GHz and external d.c. magnetic fields ranging from 0 to 32 kA/m. The experimental results show that the electromagnetic losses of the metastructures increase with the decreasing of the interwire distance due to the increasing of the long-range dynamic dipole-dipole interaction within inter-wires in the presence of the microwave field. The numerical calculations using Nicolson–Weiss–Ross algorithm are in agreement with the experimental results. The variation of the interwire distance proves to be a useful tool to obtain metastructures with controlled left-handed characteristics.
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