| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Estadual Campinas, Sch Elect & Comp Engn, Dept Microwaves & Opt, BR-13083970 Sao Paulo - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | IEEE TRANSACTIONS ON NANOTECHNOLOGY; v. 11, n. 6, p. 1217-1222, NOV 2012. |
| Web of Science Citations: | 5 |
| Abstract | |
We study the scattering properties of very small spheres made of a negative refractive index (NRI) using circuit network principles. The Lorenz-Mie theory is used to represent the transverse magnetic and transverse electric scattering coefficients based on resistor, inductor, and capacitor (RLC) ladder circuit models derived from continued fractions. The lumped elements are then analyzed and a comparison is made between these new elements and those expected for conventional positive refractive index spheres. This provides an alternative interpretation for the fact that the scattering efficiency Q(sca) for NRI spheres with size parameters x << 1 does not always obey Rayleigh's formula Q(sca) similar to x(4). The RLC circuits obtained here, besides being very simple, provide accurate physical insights into the problem of the scattering of light by NRI spheres, therefore serving as a new theoretical background for studying the scattering properties of negative refractive index metamaterials. (AU) | |
| FAPESP's process: | 05/51689-2 - Optics and Photonics Research Center at UNICAMP |
| Grantee: | Hugo Luis Fragnito |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |