Complex k band diagrams of 3D metamaterial/photonic crystals

A finite element method (FEM) for solving the complex valued k({\omega}) vs. {\omega} dispersion curve of a 3D metamaterial/photonic crystal system is presented. This 3D method is a generalization of a previously reported 2D eigenvalue method. This method is particularly convenient for analyzing periodic systems containing dispersive (e.g., plasmonic) materials, for computing isofrequency surfaces in the k-space, and for calculating the decay length of the evanescent waves. Two specific examples are considered: a photonic crystal comprised of dielectric spheres and a plasmonic fishnet structure. Hybridization and avoided crossings between Mie resonances and propagating modes are numerically demonstrated. Negative index propagation of four electromagnetic modes distinguished by their symmetry is predicted for the plasmonic fishnets. By calculating the isofrequency contours, we also demonstrate that the fishnet structure is a hyperbolic medium

Saiba como medir a sensação de calor.

bitstream/item/48129/1/10.pdfSIDE 010/08A - Agro Rede Notícias, 31 jan. 2008; SIDE 010/08B - Diário MS online, 31 jan. 2008; SIDE 010/08C - Agora MS, 31 jan. 2008; SIDE 010/08D - Folha do MS, 31 jan. 2008

Época de semeadura e risco climático em sistemas de cultivo de milho safrinha em Mato Grosso do Sul.

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