Numerical Simulation of Nanoscale Materials by Discrete Dipole Approximation

In this paper, the discrete dipole approximation (DDA) is applied to calculate the scattering property of optical materials in nanoscale. First of all, the scattering electric field of golden nanosphere is calculated to validate the DDA. Then the DDA is used to calculate the stopband of a photonic crystal, an artificial material with periodic nanostructure. At last the DDA with periodic boundary condition is used for the electromagnetic cloaking structure of infinite cylinder-shaped anisotropic metamaterial. The results are in accordance with the MIE theory and predicted physical phenomenon http://www.ivypub.org/mc/paperInfo.aspx?ID=2490