Accuracy-Adjustable Nonstandard LOD-FDTD Schemes for the Design of Carbon Nanotube Interconnects and Nanocomposite EMC Shields

The precise design of modern carbon nanoscale interconnects and EMC shields is presented in this paper via a nonstandard locally one-dimensional finite-difference time-domain algorithm. A key attribute of the new generalized technique is its frequency-dependent formulation in conjunction with an accuracy-adjustable meshing process to identify regions of smooth field variation and hence seriously reduce dispersion errors. In this way, the high-order unconditionally-stable method remains fully wideband and generates effective dual grids that allow the consistent analysis of complex carbon nanotube interactions with affordable resources. Numerical simulations, studying the performance features of various demanding applications in a wide frequency range, prove the advantages of the proposed schemes.