Title :
A modified RC-FDTD algorithm for plasmonics in Drude dispersive media nanostructures
Author :
Lesina, Antonino Calá ; Vaccari, Alessandro ; Bozzoli, Alessandro
Author_Institution :
Renewable Energies & Environ. Technol. (REET), Fondazione Bruno Kessler (FBK-irst), Trento, Italy
Abstract :
A widespread approach in the FDTD analysis of dispersive media is the Recursive Convolution (RC) method. In the Drude version it shows a not so good accuracy in describing the electromagnetic field in the plasmonic resonance regions. We propose here a modified RC algorithm which, by minimizing the time truncation error, guarantees a better accuracy of the solution. We test the modified RC algorithm proposed by analyzing the behavior of Au and Ag noble metal nanospheres exposed to an optical plane wave with respect to the analytical solution.
Keywords :
Maxwell equations; finite difference time-domain analysis; light propagation; nanostructured materials; optical dispersion; plasmonics; surface plasmon resonance; Ag; Au; RC-FDTD algorithm; drude dispersive media nanostructures; electromagnetic field; noble metal nanosphere; optical plane wave; plasmonic resonance region; plasmonics; recursive convolution method; time truncation error; Dispersion; Finite difference methods; Gold; Mathematical model; Media; Standards; Time domain analysis; Drude dispersive media; FDTD method; Laplace direct and inverse transform; Recursive Convolution (RC) method; Yee cell; nanostructures; plasmonic resonance;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6206111
