Novel Electromagnetic Scattering Model for Carbon Nanotube Composites using the Multilayer Green's Function Approach

Recently, there has been a strong demand for developing effective computational techniques to calculate the electromagnetic response of Carbon Nanotube (CNT) composites based on the underlying CNT distribution and hence predict the overall electromagnetic shielding effectiveness of the composite. The aim of this paper is to develop a novel efficient full-wave electromagnetic model for CNT composites. The Method of Moment (MOM) formulation of Arbitrary Thin Wires (ATW) is evoked to model the CNTs since they typically exhibit high aspect ratios and complex shapes. The solution is based on electric field integral equation (EFIE) that uses a multilayer Green's function to account for the dielectric slab in which the CNTs are embedded. The Sommerfeld integrals are evaluated using a semi-analytic approach, which uses the elliptic contour deformation technique along with closed form evaluation for the asymptotic tails. The accuracy and performance of this new technique are validated using extensive computational experiments and various applications of the model are outlined.